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Vaisala PR-23 Series User Manual

Process refractometer
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IM-EN-PR23-E
User Guide
Process Refractometer
PR-23 Series

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  • Page 1 IM-EN-PR23-E User Guide Process Refractometer PR-23 Series...
  • Page 2 This product contains software developed by party without prior written permission of the Vaisala or third parties. Use of the software is copyright holder. Translated documents and governed by license terms and conditions...

  • Page 3: Table Of Contents

    Table of contents Table of contents About this document..................11 Version information.................... 11 Documentation conventions................11 Trademarks......................12 Patent notice.......................12 Product overview..................... 13 Safety........................13 Storage conditions, packaging and transportation........15 PR-23 refractometer models................15 Refractometer sensor..................15 Mounting sensor....................17 Choosing sensor mounting location..............17 PR-23 mounting guide..................
  • Page 4 PR-23 Series User Guide IM-EN-PR23-E Configuration and calibration..............59 Configuring output signal damping............... 59 7.1.1 Exponential damping.................59 7.1.2 Linear damping..................60 7.1.3 Slew rate limit....................61 Configuring output signal hold functionality..........62 7.2.1 External hold....................63 7.2.2 Hold during wash..................63 7.2.3 Tolerance time.....................63 7.2.4...
  • Page 5 Table of contents 10.4.4 PR‑23‑AP parts list..................119 10.4.5 PR‑23‑AP mounting specifics..............119 10.4.6 Mounting specifics for EHEDG‑certified PR‑23‑AP configuration..121 10.4.7 3‑A Sanitary Standard compliance............121 10.5 Compact process refractometer PR‑23‑GC..........122 10.5.1 PR‑23‑GC sensor model code..............122 10.5.2 PR‑23‑GC specifications................124 10.5.3 PR‑23‑GC parts list..................126 10.5.4 PR‑23‑GC mounting specifications............126...
  • Page 6 PR-23 Series User Guide IM-EN-PR23-E 11.4 Safe‑Drive mounting..................175 11.4.1 Welding isolation valve to pipe............... 178 11.4.2 PR-23-SD system wiring................182 11.4.3 Steam piping for SDI2................182 11.4.4 High pressure water piping for SDI2............185 11.4.5 Water consumption of high pressure wash system......186 11.4.6...
  • Page 7 Table of contents Regulatory compliance and certifications.......... 251 17.1 Declaration of conformity for PR-23 series refractometers....... 251 17.2 Declaration of conformity for PR-23-...-AX models (ATEX)......253 17.3 Declaration of conformity for PR-23-...-IA models (ATEX)....... 255 Appendix A: Glossary and abbreviations..........257 Appendix B: Principle of measurement...........
  • Page 8 PR-23 Series User Guide IM-EN-PR23-E List of figures Figure Refractometer equipment................13 Figure Sensor structure....................16 Figure Indicating transmitter enclosure..............21 Figure Linearized curve....................22 Figure Indicating transmitter dimensions and mounting feet measures..24 Figure Sensor electrical connections..............26 Figure Opening indicating transmitter front panel..........29 Figure External power switch...................30...
  • Page 9 List of figures Figure 51 PR‑23‑M/MS/W rangeability with a sapphire prism (74) and with a standard prism (73)..............100 Figure 52 PR‑23‑AC parts list..................107 Figure 53 Mounting with sanitary ferrule pipe diameter 3 in (80 mm) or more...................108 Figure 54 Flow cell AFC‑HSS‑ H10 for pipe diameter 1 in (25 mm) and H15 for pipe diameter 1.5 in (40 mm)..........109 Figure 55 Flow cell AFC‑HSS‑...
  • Page 10 PR-23 Series User Guide IM-EN-PR23-E Figure 97 Selecting mounting location..............176 Figure 98 Mounting Safe‑Drive on vertical pipe............177 Figure 99 Mounting Safe‑Drive on horizontal pipe..........178 Figure 100 Safe-Drive isolation valve installation guide sticker......179 Figure 101 Welding Safe-Drive isolation valve to horizontal pipe....... 180 Figure 102 Welding Safe-Drive isolation valve to vertical pipe......
  • Page 11 List of tables List of tables Table Document versions (English)................11 Table 2 PR-23 patents....................... 12 Table 3 Wash medium parameters for integral wash nozzles in PR‑23‑AP/GP......................38 Table 4 Wash medium parameters for flow cell wash nozzle AFC...... 38 Table 5 Wash medium parameters for Safe‑Drive isolation valve nozzle SDI......................
  • Page 12 PR-23 Series User Guide IM-EN-PR23-E Table 50 Saundersâ valve body flow cell for sensor PR‑23‑W......156 Table 51 General specifications..................157 Table 52 Sensor PR‑23‑W specifications..............157 Table 53 Saundersâ valve body specifications............158 Table 54 PR‑23‑SD specifications..................170 Table 55 PR-23-SD and isolation valve SDI-23 specifications........

  • Page 13: About This Document

    Chapter 1 – About this document 1. About this document 1.1 Version information This document provides instructions for installing, using and maintaining Vaisala K- PATENTSâ Process Refractometer PR-23. Table 1 Document versions (English) Document code Date Description IM-EN-PR23, E February 2021 Structure and style updates, updates to sensor specifications.

  • Page 14: Trademarks

    Indicates that you need to take some notes during the task. 1.3 Trademarks Vaisalaâ and K-PATENTS® are registered trademarks of Vaisala Oyj. Linuxâ is a registered trademark of Linus Torvalds. Windowsâ is either a registered trademark or trademark of Microsoft Corporation in the United States and other countries.

  • Page 15: Product Overview

    Chapter 2 – Product overview 2. Product overview The PR‑23 in‑line refractometer is an instrument for measuring liquid concentration in the process line. The measurement is based on the refraction of light in the process medium, an accurate and safe way of measuring liquid concentration. P OWE R PROCESS INSTRUMENTS Figure 1 Refractometer equipment...
  • Page 16 PR-23 Series User Guide IM-EN-PR23-E WARNING! Only licensed experts may install electrical components. They must adhere to local and state legislation and regulations. Precautions when removing the sensor from the process line: • Make positively sure that the process line is not under pressure. Open a vent valve to the atmosphere.

  • Page 17: Storage Conditions, Packaging And Transportation

    Chapter 2 – Product overview 2.2 Storage conditions, packaging and transportation Soft shell packaging prevents damage to the refractometer. Transport the device in its original packaging. Before storing, remove any dirt and grease from the refractometer and make sure that it is dry.
  • Page 18 PR-23 Series User Guide IM-EN-PR23-E Figure 2 Sensor structure Cooling fins Sensor processor card Light source Temperature probe Gasket Prism Core module Thermal isolator Disc spring CCD element...

  • Page 19: Mounting Sensor

    Chapter 3 – Mounting sensor 3. Mounting sensor Choose the sensor mounting location with care to ensure reliable readings from the process. Some basic rules, described in this section, apply to all sensor models. The model specific instructions can be found in Sensor specifications (page 99).
  • Page 20 PR-23 Series User Guide IM-EN-PR23-E Additional cooling is necessary when the ambient temperature is higher than 45 °C (113 °F) or when the process temperature is above 110 °C (230 °F) and the ambient temperature is above 35 °C (95 °F). The air cooling is improved by blowing pressurized air against the sensor cover.

  • Page 21: Mounting Guide

    Chapter 3 – Mounting sensor 3.2 PR-23 mounting guide...

  • Page 22: Pipe Mounting Checklist

    PR-23 Series User Guide IM-EN-PR23-E 3.3 Pipe mounting checklist Most in-line refractometer models are mounted in a pipe. The recommended minimum flow velocity is 1.5 m/s (5 ft/s). The diameter and form of the pipe and the process temperature affect the measurement and need to be taken into account.

  • Page 23: Indicating Transmitter Dtr

    Chapter 4 – Indicating transmitter DTR 4. Indicating transmitter DTR The indicating transmitter DTR is a specialized computer designed to process data received from one or two sensors. The indicating transmitter enclosure contains a front panel with a backlit LCD and a keyboard. The front panel swings open to give access for connections and service.
  • Page 24 PR-23 Series User Guide IM-EN-PR23-E BRIX 1.35 1.40 1.45 Figure 4 Linearized curve...

  • Page 25: Mounting Indicating Transmitter

    Chapter 4 – Indicating transmitter DTR 4.1 Mounting indicating transmitter Warning Warning! The DTR does not have a built-in power Varování! DTR nemá vestavěný vypínač napájení. Po switch. The system is always powered on when připojení ke zdroji napájení je systém vždy zapnutý. connected to a power source.

  • Page 26: Electrical Connections

    PR-23 Series User Guide IM-EN-PR23-E Mount the indicating transmitter indoors, preferably in an easily accessible, well-lit and dry area. Avoid vibration. Take interconnecting cable length into consideration when choosing the mounting location. The enclosure is mounted vertically on an upright surface (wall) using four mounting feet, see the following figure.

  • Page 27: Connecting Sensor

    Chapter 4 – Indicating transmitter DTR 4.2.2 Connecting sensor CAUTION! Do not connect or disconnect the sensor connector when the circuits are energized. Switch off the power from indicating transmitter DTR external power switch before disconnecting the sensor cable from the sensor. After connecting the sensor cable back to the sensor, you can switch power back on.
  • Page 28 PR-23 Series User Guide IM-EN-PR23-E 4. Screw the nameplate back on. Figure 6 Sensor electrical connections More information ‣ Interconnecting cable (page 24)

  • Page 29: Connecting Indicating Transmitter

    Chapter 4 – Indicating transmitter DTR 4.2.3 Connecting indicating transmitter Warning Warning! Check that the power is off before opening Varování! Před otevřením předního panelu the front panel. If the green power indicator light is zkontrolujte, zda je napájení vypnuto. Pokud svítí on, there is still power in the system.
  • Page 30 PR-23 Series User Guide IM-EN-PR23-E Warning Warning! Hazardous voltage, contact may cause Varování! Nebezpečné napětí, kontakt může electric shock or burn. Beware of the live wires in the způsobit úraz elektrickým proudem nebo popálení. lower right-hand corner of the H1 interface card.
  • Page 31 Chapter 4 – Indicating transmitter DTR Figure 7 Opening indicating transmitter front panel Power indicator light Front panel screw Make sure that you mount an external power switch for the divert control unit that is close to the unit and easily reachable. Make sure that you mark it as a disconnecting device. The following figure shows the recommended external power switch, spare part nr PR‑10900.
  • Page 32 PR-23 Series User Guide IM-EN-PR23-E Figure 8 External power switch The following figure shows the motherboard of the indicating transmitter for AC power.
  • Page 33 Chapter 4 – Indicating transmitter DTR Figure 9 Motherboard (AC power) The following figure shows the motherboard of the indicating transmitter for 24 VDC power.

  • Page 34: Figure 10 Motherboard (24 Vdc)

    PR-23 Series User Guide IM-EN-PR23-E POWER Figure 10 Motherboard (24 VDC) The following table describes the terminals on the H1 interface card PR‑10701 and on the transmitter motherboard PR‑10600. Terminal Usage On H1 A 1 2 3 Connection for Sensor A, signal wires (1, 2), cable shield (3).

  • Page 35: Power Terminals For Ac Power

    Chapter 4 – Indicating transmitter DTR Terminal Usage 41 42 24 V terminal for DTR internal use only. Connecting terminal to external 24 V supply voids the warranty. Connecting external devices to 24 V terminal voids the warranty. 51 52 53 54 55 Switch inputs: switch 1 (51), switch 2 (52), switch 3 (53), switch 4 (54) and common 3 V for all inputs (55).

  • Page 36: Relay Connections

    PR-23 Series User Guide IM-EN-PR23-E 4.2.6 Relay connections Warning Warning! Connect only AC or DC power to relays. Varování! K relé připojte pouze střídavé nebo You can connect AC power to both relays or DC stejnosměrné napájení. Můžete připojit střídavé power to both relays, but never connect AC in one napájení...
  • Page 37 Chapter 4 – Indicating transmitter DTR Warning Warning! Items DD-23-M-GP-DC and DD-23-U-GP- Varování! Položky DD-23-M-GP-DC a DC are PELV devices. See type label for supply DD-23-U-GP-DC jsou zařízení PELV. Specifikace voltage specifications. Connect the protective napájecího napětí najdete na typovém štítku. grounding to the same grounding potential that is Připojte ochranné...

  • Page 38: Reset Button

    PR-23 Series User Guide IM-EN-PR23-E 4.2.7 Reset button You can reset and restart both the indicating transmitter DTR and the sensor by pushing the reset button. You can access the button through the cable hole in the front panel shield as shown in the following figure.

  • Page 39: Prism Wash Systems

    Chapter 5 – Prism wash systems 5. Prism wash systems 5.1 Prism coating Deposit build-up on the prism surface disturbs the measurement. Look out for an abnormally high concentration reading or an upward concentration (CONC) drift. In most applications the prism keeps clean due to the self-cleaning effect. If coating occurs, check the following: •...

  • Page 40: Table 3 Wash Medium Parameters For Integral Wash Nozzles In

    PR-23 Series User Guide IM-EN-PR23-E Table 3 Wash medium parameters for integral wash nozzles in PR‑23‑AP/GP Minimum Maximum Wash time Recovery Interval above process above process pressure pressure Steam (SN) 2 bar (30 psi) 4 bar (60 psi) 20 … 30 s 20 …...

  • Page 41: Prism Wash Systems

    Chapter 5 – Prism wash systems The check valve pressure drop is 0.7 bar (10 psi). 5.2.2 Prism wash systems The following figures describe the prism wash systems for steam and for sanitary systems. Figure 17 (page 44) describes the prism wash system for high pressure water. V A I S A L A V A I S A L A V A I S A L A...

  • Page 42: Figure 13 Sanitary Prism Wash System For Steam

    PR-23 Series User Guide IM-EN-PR23-E V A I S A L A V A I S A L A V A I S A L A V A I V A I S A L A V A I S A L A Figure 13 Sanitary prism wash system for steam...

  • Page 43: Figure 14 Pressure Reducing Valve Pr-3341-J

    Chapter 5 – Prism wash systems Figure 14 Pressure reducing valve PR‑3341‑J Note the orientation of the strainer.

  • Page 44: Figure 15 Install Strainer Horizontally

    PR-23 Series User Guide IM-EN-PR23-E Vertical Horizontal Figure 15 Install strainer horizontally...

  • Page 45: Figure 16 Wiring For A Prism Wash System For Steam

    Chapter 5 – Prism wash systems Figure 16 Wiring for a prism wash system for steam...

  • Page 46: Figure 17 Prism Wash System For High Pressure Water

    PR-23 Series User Guide IM-EN-PR23-E WARNING! In high pressure wash systems, pressure increase can occur in a closed pipe section when the high pressure pump is operated. It is recommended to mount a pressure relief valve in the pipe section. Relief pressure must be according to pipe pressure rating.

  • Page 47: Figure 18 Wiring For Prism Wash System For High Pressure Water

    Chapter 5 – Prism wash systems Figure 18 Wiring for prism wash system for high pressure water...

  • Page 48: Prism Wash Nozzles

    PR-23 Series User Guide IM-EN-PR23-E 5.2.3 Prism wash nozzles When selecting a wash nozzle for a compact refractometer, take into account both the wash medium and the flow cell model: flow cells with larger pipe diameters need longer wash nozzles. The figure below shows a wash nozzle for a flow cell and gives the measurements and part numbers for each nozzle type.

  • Page 49: Figure 20 Process Connection Of Wash Nozzle In Flow Cell

    Chapter 5 – Prism wash systems Figure 20 Process connection of wash nozzle in flow cell For more information on flow cells, see PR‑23‑AC mounting specifics (page 107). The following table lists wash nozzles according to wash medium and refractometer model for probe refractometers.

  • Page 50: Figure 21 Mounting Of Wash Nozzle For Sanitary Probe

    PR-23 Series User Guide IM-EN-PR23-E Figure 21 Mounting of wash nozzle for sanitary probe refractometer PR‑23‑AP...

  • Page 51: Figure 22 Mounting Of Wash Nozzle For Process Refractometer Pr-23-Gp

    Chapter 5 – Prism wash systems [in] VAISALA VAISALA VAISALA VAISALA VAISALA Figure 22 Mounting of wash nozzle for process refractometer PR‑23‑GP...

  • Page 52: Startup And Use

    PR-23 Series User Guide IM-EN-PR23-E 6. Startup and use 6.1 Startup 6.1.1 Initial check Main display for two sensors Main display for single sensor, concentration only Main display for single sensor, Main display for single sensor, concentration and temperature concentration and bar graph Figure 23 Main display alternatives...

  • Page 53: Calibration Check

    Chapter 6 – Startup and use 6. For a connected sensor, the diagnostic message at start-up is Normal operation or NO SAMPLE if the process pipe is empty. If another diagnostic message is shown instead, Diagnostic message priorities (page 97). 7.

  • Page 54: Keyboard Functions

    PR-23 Series User Guide IM-EN-PR23-E 6.2.1 Keyboard functions Number keys: The 10 number keys, minus sign, and decimal point are used to enter numerical parameters. They are also used for menu selections. ENTER key: The ENTER key is used to implement the selected (highlighted) menu command or to accept an entered value.

  • Page 55: Display Setup

    Chapter 6 – Startup and use Press the key under the display. The display is not touch sensitive. 6.2.2 Display setup Selecting MENU / MENU A / MENU B or SENSOR A or SENSOR B (depending on your Main display format) in the Main display gives the menu display. Choose 4 DISPLAY SETUP to change the Main display format and bar graph settings, to adjust backlight or contrast and to invert the display.

  • Page 56: Figure 26 Main Display Format Selection

    PR-23 Series User Guide IM-EN-PR23-E Figure 26 Main display format selection An automatic 60 s (in verification 5 min) timeout makes backsteps from any display until the Main display is reached. Display appearance: The 2 DISPLAY BACKLIGHT & CONTRAST can be selected from the...

  • Page 57: Viewing System Information

    Chapter 6 – Startup and use 6.3 Viewing system information The DESCRIPTION selection from the Main menu, see Figure 24 (page 52), opens a path to complete information about the system and calibration. This path is risk-free in the sense that no values can be changed through this menu. To be able to make changes, select CALIBRATION from the Main menu.

  • Page 58: Figure 28 Optical Images With Ids

    PR-23 Series User Guide IM-EN-PR23-E If there is no signal from the sensor, the image field is crossed over. Figure 28 Optical images with IDS The soft key SLOPE leads to a graph showing the slope (or first differential) of the optical image graph.

  • Page 59: Optical Image With Vd

    Chapter 6 – Startup and use 6.4.2 Optical image with VD Vertical Borderline Image Detection (VD) is used in a sugar vacuum pan. With vertical borderline the optical image is without IDS, and the sides of the optical image are straight and slightly sloping.

  • Page 60: Temperature Measurement

    PR-23 Series User Guide IM-EN-PR23-E The slope display also has a soft key SENSOR RESTART which can be used to restart the current sensor (see upper left corner of the display for sensor letter) after a sensor software update. 6.4.4 Temperature measurement...

  • Page 61: Configuration And Calibration

    Chapter 7 – Configuration and calibration 7. Configuration and calibration All changes of configuration and calibration are made through the Calibration menu selected from the Main menu by 5 CALIBRATION. Password It may be necessary to enter a password before proceeding to the Calibration menu. The password is shown in Product overview (page 13).

  • Page 62: Linear Damping

    PR-23 Series User Guide IM-EN-PR23-E Figure 31 Exponential damping 7.1.2 Linear damping If the process has fast step changes, linear (fast) damping gives shorter settling time. In the linear damping (fast damping), the output is the running average of the signal during the damping time.

  • Page 63: Slew Rate Limit

    Chapter 7 – Configuration and calibration Figure 32 Linear damping 7.1.3 Slew rate limit If the process signal has short erroneous high or low peaks, the slew rate limiting can be used to cut their effects. The slew rate damping limits the maximum change for the output signal in one second.

  • Page 64: Configuring Output Signal Hold Functionality

    PR-23 Series User Guide IM-EN-PR23-E Figure 33 Slew rate damping Avoid overdamping, the signal should not be made insensitive. 7.2 Configuring output signal hold functionality The refractometer can be configured to temporarily hold its measurement result in three different cases: 1. By using an external hold switch, see Configuring input switches (page 68).

  • Page 65: External Hold

    Chapter 7 – Configuration and calibration 7.2.1 External hold When a switch input is configured for external hold functionality, see Configuring input switches (page 68), and the switch contact is closed, the measurement result is in hold. The measurement result is kept in hold until the switch contact is opened. A status message EXTERNAL HOLD is displayed.

  • Page 66: Qf Threshold

    PR-23 Series User Guide IM-EN-PR23-E Figure 34 Effect of tolerance time on output 7.2.4 QF threshold The QF threshold setting can be used to prevent the instrument from measuring when the image quality is below a certain limiting value. When QF value lower than the defined value,...

  • Page 67: Hold And Signal Damping

    Chapter 7 – Configuration and calibration 7.2.6 Hold and signal damping The signal filtering (damping) is stopped during hold. The last filtered value is shown on the screen and set to the mA output (if the concentration output is configured). The following figure shows this behavior (gray areas represent the periods when the hold is active).

  • Page 68: Configuring Refractometer System

    PR-23 Series User Guide IM-EN-PR23-E The selection of tolerance time with DD‑23 requires a careful risk analysis. The use of the tolerance time functionality does not slow down the response of the instrument when the instrument is in Normal operation. However, it slows down the malfunction alarm in DD‑23 in case the process pipe becomes empty or some other reason makes the optical image impossible to interpret.
  • Page 69 Chapter 7 – Configuration and calibration 4. To set the relay function, select 2 FUNCTION. Function name Description NOT DEFINED Factory setting. NORMAL OPERATION Closed contact if diagnostic message is Normal operation during HOLD, see Configuring input switches (page 68). The contact is also closed when message is NO SAMPLE.

  • Page 70: Configuring Input Switches

    PR-23 Series User Guide IM-EN-PR23-E 9. For manual set, go (back) to the Select relay menu and choose 3 MANUAL SET. In the manual set display you can open and close any relay by pressing the appropriate soft key. The current status of the relay (open or closed) is displayed next to the relay name.
  • Page 71 Chapter 7 – Configuration and calibration 3. Select 1 SENSOR to assign the chosen switch to a given sensor. The selection line automatically goes to the currently valid setting. In the following figure, switch 1 has been assigned to sensor A.

  • Page 72: Configuring Ma Outputs

    PR-23 Series User Guide IM-EN-PR23-E 4. To set the switch function, select Switch > 2 FUNCTION. The current assignment of the switch is shown at the bottom of the Switch menu display. For example, in the previous figure, switch 1 is assigned to sensor A with function Wash stop.

  • Page 73: Figure 37 Output Menu For Ma Output 1

    Chapter 7 – Configuration and calibration • Select 5 CALIBRATION in the Main menu and enter password if necessary. Select 2 OUTPUTS in the Calibration menu. In the Outputs menu, select 5 mA OUTPUTS. • Select the mA output, 1 or 2, to get to the Output menu (as shown in the following figure) where the output can be configured.

  • Page 74: Calibrating Concentration Measurement

    PR-23 Series User Guide IM-EN-PR23-E • 5 DEFAULT OUTPUT sets a mA default output value that the instrument returns to in certain malfunction situations. The value can be set to a low or high mA value, for example, 3.0 mA or 22 mA. The factory setting for default output is 3.4 mA. For a list of...

  • Page 75: Figure 39 Concentration Calibration Layers

    Chapter 7 – Configuration and calibration Pt-1000 TEMP Sensor Indicating transmitter CHEMICAL CURVE CALC FIELD CALIBRATION DAMPING CONC mA OUTPUT Figure 39 Concentration calibration layers The information from the CCD element and the Pt-1000 temperature element. The position of the shadow edge, see Figure 143 (page 259), is described by a number called CCD and scaled 0 …...

  • Page 76: Chemical Curve

    A chemical curve is specific to the given process medium, for example, sucrose or sodium hydroxide. The set of parameters is given by Vaisala and should not be altered, except in case of changing to another process medium. The parameters can be changed by selecting 5 CALIBRATION from the Main menu, then, in the Calibration menu, 1 CHEMICAL &...

  • Page 77: Field Calibration

    Chapter 7 – Configuration and calibration 7.4.3 Field calibration Vaisala provides a field calibration service that adapts the calibration to the factory laboratory determinations based on the data supplied. The field calibration procedure should be made under normal process conditions using standard laboratory determinations of sample concentration.

  • Page 78: Entering Field Calibration Parameters

    Calibration using the process liquid must always be made in‑line. 7.4.4 Entering field calibration parameters Enter the field calibration parameters supplied by Vaisala by selecting 5 CALIBRATION from the Main menu, followed by 1 CHEMICAL & FIELD PARAMETERS and then 2 FIELD CALIBRATION PARAMETERS.

  • Page 79: Configuring Prism Wash

    Chapter 7 – Configuration and calibration The value of the bias parameter f00 is added to the concentration value: NEW CONC = OLD CONC + f00. 7.5 Configuring prism wash In some applications the process flow does not keep the prism clean because of sticky process medium or low flow velocity.
  • Page 80 PR-23 Series User Guide IM-EN-PR23-E For safety reasons two sensors never wash simultaneously. If the manual wash button for sensor A is pressed while sensor B is washing, the wash cycle for sensor A is started after B has finished. Similarly, if the interval time for sensor B elapses when A is washing, the wash for sensor B is delayed until A has finished.

  • Page 81: Figure 42 Wash Logic

    Chapter 7 – Configuration and calibration sensor washing? MANUAL been WASH pressed? Remote wash requested? Wash interval reached? Temp limit active? Temp above limit? Message Figure 42 Wash logic...
  • Page 82 PR-23 Series User Guide IM-EN-PR23-E Remote wash is triggered at the closing of the switch. If the switch is held closed, only one wash cycle is carried out. The wash is inhibited if there is no sample, no sensor or the sensor cannot measure...

  • Page 83: Figure 43 Wash Cycle

    Chapter 7 – Configuration and calibration Precondition enabled? Precondition 1 s wait Start washing Wash auto-cut enabled? nD < nD limit? Wash time reached? Wash time reached? Stop washing Recovery Figure 43 Wash cycle More information ‣ Troubleshooting messages (page 92)

  • Page 84: Setting Prism Wash Parameters

    PR-23 Series User Guide IM-EN-PR23-E 7.5.2 Setting prism wash parameters To set the prism wash parameters for a given sensor, first select the sensor, then select 5 CALIBRATION from the Main menu, and then 4 PRISM WASH. This menu contains the...
  • Page 85 Chapter 7 – Configuration and calibration To activate (or deactivate) a temperature limit, choose 7 TEMP LIMIT ACTIVATION and then the appropriate command in the menu. To set a low temperature limit, choose 8 TEMP LIMIT VALUE °C and enter the temperature (in °C) where the limit should be.

  • Page 86: Regular Maintenance

    If the prism is scratched, eroded, or the gaskets seem to leak, contact service. CAUTION! In 3‑A certified sensors, only authorized Vaisala service centers can perform prism gasket replacement and other repairs. If gaskets of 3‑A certified sensors are...

  • Page 87: Troubleshooting

    Chapter 9 – Troubleshooting 9. Troubleshooting 9.1 Hardware Warning Warning! Hazardous voltage, contact may cause Varování! Nebezpečné napětí, kontakt může electric shock or burn. Beware of the live wires in the způsobit úraz elektrickým proudem nebo popálení. lower right-hand corner of the H1 interface card. Dejte si pozor na vodiče pod napětím v pravém dolním rohu karty rozhraní...

  • Page 88: Figure 44 Transmitter Card Positions

    PR-23 Series User Guide IM-EN-PR23-E To troubleshoot refractometer hardware problems, it is often important to localize the different cards inside the DTR. The Diagnostic LEDs on the cards help solve the problems and give an indication on whether a connection is good.

  • Page 89: Figure 45 Motherboard Pr-10600 And H1 Interface Card Pr-10701

    Chapter 9 – Troubleshooting Figure 45 Motherboard PR‑10600 and H1 interface card PR‑10701...

  • Page 90: Blank Display

    PR-23 Series User Guide IM-EN-PR23-E 9.1.1 Blank display Is Power indicator light on? Processor See figure on next page to Power supply card LEDs troubleshoot power supply. problem blinking? Processor card PR-10500 or Front panel bad. Processor Processor card card LEDs PR-10500 bad.

  • Page 91: Diagnostic Leds

    Chapter 9 – Troubleshooting Important safety considerations +24 V - Always switch off the mains before Power supply OK disconnecting or reconnecting cables, modules, and similar - Beware of the high voltage terminals 34 and 35 Mains Have it fixed Measuring instructions - Use a DMM (Digital Multimeter) to measure the voltage...

  • Page 92: Table 8 Diagnostic Leds

    PR-23 Series User Guide IM-EN-PR23-E Table 8 Diagnostic LEDs Status Indication See section Front panel Green LED DTR power is on; processor card Blank display PR‑10500 is active. (page 88) Transmitter processor card PR‑10500 2 yellow LEDs Blinking Processor card OK.

  • Page 93: Display Unreadable

    Chapter 9 – Troubleshooting Transmitter processor card POWER DISPLAY 24 V/3 V KEYBOARD 3 V DC 24 V DC Power supply module DC/DC Relay 1 Relay 2 mA outputs Transmitter motherboard H1 interface card Figure 48 Diagnostic LED functions 9.1.3 Display unreadable If the display is unreadable because of extreme display backlight and contrast settings or wrong display language, you can perform a display reset.

  • Page 94: Troubleshooting Messages

    PR-23 Series User Guide IM-EN-PR23-E 4. Hold down the decimal point key until the DTR has started completely and you see the main display. The reset on the display language is temporary and the language returns to original next time the DTR is powered off, except if the language is permanently changed through the display settings menu.
  • Page 95 Chapter 9 – Troubleshooting Problem Cause Corrective action Message SHORT-CIRCUIT The most likely cause of these messages is a problem in the cable connecting the sensor in question to the DTR. Check that the cable is The current in the cable to the undamaged and replace it if necessary, then turn the DTR off and back sensor A/B exceeds 60 mA.

  • Page 96: Table 10 Measurement Troubleshooting

    PR-23 Series User Guide IM-EN-PR23-E Problem Cause Corrective action Message HIGH TRANSMITTER The temperature of the motherboard of the Indicating transmitter TEMP exceeds 60 °C (140 °F). To read this temperature, select 3 SENSOR STATUS from the Main menu and check DTR TMP. If the warning persists, move the transmitter to a cooler place (for example out of the sun).
  • Page 97 Chapter 9 – Troubleshooting Problem Cause Corrective action Message NO OPTICAL IMAGE The optical image can be seen from selecting 3 SENSOR STATUS at the Main menu, see Optical image with IDS (page 55) Optical image with VD (page 57). There are several possible causes: 1.

  • Page 98: Table 11 Wash Troubleshooting

    PR-23 Series User Guide IM-EN-PR23-E Problem Cause Corrective action Message TEMP MEASUREMENT Indicates faulty temperature Replace the temperature element. FAULT element. A difference to some other process temperature measurement is not a fault. PR‑23 measures the true temperature of the prism surface.

  • Page 99: Diagnostic Message Priorities

    Chapter 9 – Troubleshooting More information ‣ Wash cycle (page 77) 9.1.5 Diagnostic message priorities The messages are listed in descending order of priority. For example, if both NO OPTICAL IMAGE and TEMP MEASUREMENT FAULT are activated, only NO OPTICAL IMAGE displays.
  • Page 100 PR-23 Series User Guide IM-EN-PR23-E Message Instrument OK Returns to default mA Conc Temp PRISM WASH FAILURE PRISM WASH WARNING NO SENSOR NORMAL OPERATION...

  • Page 101: Sensor Specifications

    Chapter 10 – Sensor specifications 10. Sensor specifications For the specifications of the PR‑23‑SD sensor for Safe‑Drive system, see PR‑23‑SD specifications (page 170) Transmitter parts list (page 225). Figure 49 Sensor nameplates 10.1 Sensor compatibility Electrically: All PR‑23 sensors are interchangeable. The PR‑23 sensors are not interchangeable with the PR‑01 and PR‑03 range sensors.

  • Page 102: Sanitary Process Refractometer Pr-23-Ac

    PR-23 Series User Guide IM-EN-PR23-E 1.30 1.35 1.40 1.45 1.50 1.55 1.60 0 10 20 30 50 60 70 80 BRIX Figure 50 PR‑23 rangeability The refractometer models PR‑23‑M/MS and PR‑23‑W for aggressive solutions and ultra-pure fine chemicals can be equipped with a sapphire prism with a refractive index range 1.2600 …...
  • Page 103 Chapter 10 – Sensor specifications Model Description Compact type for pipeline installations Refractive index range limits R.I. 1.320–1.530 n (0 … 100 Brix) spinel prism ‑62 R.I. 1.320–1.530 n (0 … 100 Brix) sapphire prism ‑73 R.I. 1.260–1.470 n sapphire prism ‑74 Process connection Sanitary clamp, 2.5 in, insertion length 14 mm...

  • Page 104: Pr-23-Ac Mounting Hardware Model Code

    PR-23 Series User Guide IM-EN-PR23-E Model Description Electropolished sensor wetted parts (RA 0.38 µm, 15 µin) ‑EP For AISI 316 L / EN 1.4335 only. Includes gasket Teflon 2.5 in and Ferrule in Alloy C. Available with STR Indicating Transmitter and IS isolator only.

  • Page 105: Table 14 Ehedg Certified Elbow Flow Cells, Connection Sanitary Clamp 2.5 In

    Chapter 10 – Sensor specifications Table 14 EHEDG certified elbow flow cells, connection sanitary clamp 2.5 in Model Description Elbow flow cell Sensor connection Sanitary clamp, 2.5 in ‑H Material of construction AISI 316 L Process connection Sanitary clamp ‑H Pipe section diameter 50 mm (2 in) Flow cell inlet type Straight pipe...

  • Page 106: Table 16 Mounting Hardware For Pr-23-Ac-Xx-Hss Sensor

    PR-23 Series User Guide IM-EN-PR23-E Model Description 100 mm (4 in) Flow cell inlet type Straight pipe ‑SI Reduced pipe (cone) ‑RI Wash nozzle connection Nozzle connection ‑NC Wash nozzles Steam nozzle, G¼ thread female ‑SN Water nozzle, G¼ thread female ‑WN...

  • Page 107: Table 18 Side Flow Cells, Connection Sanitary Clamp 2.5 In

    Chapter 10 – Sensor specifications Model Description 65 mm (2.5 in) ‑65 80 mm (3 in) ‑80 100 mm (4 in) ‑100 125 mm (5 in) ‑125 150 mm (6 in) ‑150 Counter flange options Steam nozzle, G¼ thread female ‑SN Pressurized water nozzle, G¼...

  • Page 108: Pr-23-Ac Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 20 Sensor PR-23-AC specifications Feature Specification Sensor PR‑23‑AC...

  • Page 109: Pr-23-Ac Parts List

    1. Self-cleaning of prism due to the flow directed against its surface. 2. Efficient drainage when the pipe is emptied. For pipe diameters of 3 in or above, a ferrule is welded directly to the pipe wall (a ferrule, length 21.5 mm, is delivered with standard sensor delivery from Vaisala).

  • Page 110: Figure 53 Mounting With Sanitary Ferrule Pipe Diameter 3 In

    PR-23 Series User Guide IM-EN-PR23-E Figure 53 Mounting with sanitary ferrule pipe diameter 3 in (80 mm) or more For smaller pipe diameters, flow cells are available from Vaisala, see Figure 54 (page 109), Figure 55 (page 110), Figure 56 (page 111)

  • Page 111: Figure 54 Flow Cell Afc-Hss- H10 For Pipe Diameter 1 In (25 Mm)

    Chapter 10 – Sensor specifications SECTION A-A SCALE 1 : 2 AFC-HSS-H15-RI AFC-HSS-H10/H15-SI Flow cell type AFC-H10-SI 22.6 [0.890] 22.6 [0.890] 25.6 [1.008] 50.8 [2] AFC-H15-RI 22.6 [0.890] 35.6 [1.402] 38.6 [1.520] 70.3 [2.768] AFC-H15-SI 35.6 [1.402] 35.6 [1.402] 38.6 [1.520] 70.3 [2.768] Figure 54 Flow cell AFC‑HSS‑...

  • Page 112: Figure 55 Flow Cell Afc-Hss- With Wash Nozzle Connection (-Nc)

    PR-23 Series User Guide IM-EN-PR23-E Section A-A Scale 1:2 AFC-H10/H15-RI-NC AFC-H10/H15-SI-NC Section B-B Scale 1:2 Figure 55 Flow cell AFC‑HSS‑ with wash nozzle connection (‑NC) H10 for pipe diameter 1 in (25 mm) and H15 for pipe diameter 1.5 in (40 mm) Flow cell type AFC‑H10‑RI‑NC...

  • Page 113: Figure 56 Flow Cell Afc-Hss- H20 For Pipe Diameter 2 In (50 Mm)

    Chapter 10 – Sensor specifications SECTION A-A SCALE 1 : 2 Flow cell type 48.6 51.6 89.0 AFC-HSS-H20-SI 48.6 48.6 51.6 89.0 AFC-HSS-H20-RI 35.6 AFC-HSS-H25-SI 60.3 64.1 108.0 60.3 Figure 56 Flow cell AFC‑HSS‑ H20 for pipe diameter 2 in (50 mm) and H25 for pipe diameter 2.5 in (65 mm)

  • Page 114: Mounting Specifics For Ehedg-Certified Pr-23-Ac Configuration

    To ensure EHEDG compliant installation, follow the mounting specifics provided on the mounting drawing supplied by Vaisala with each refractometer sensor ordered with the ‑EH option. 10.3.7 3‑A Sanitary Standard compliance Ensure that the refractometer is not a source of contamination to the product due to damaged or worn product contact surfaces.

  • Page 115: Sanitary Probe Refractometer Pr-23-Ap

    Vaisala offers a 3‑A Sanitary Standard Accepted repair and maintenance package in which all wetted parts, prism, gaskets and dryer are replaced. This repair service can be completed only by a 3‑A authorized service center (Vaisala factory or regional headquarters).

  • Page 116: Table 22 Sanitary Probe Refractometer Pr-23-Ap With Prism Wash For Large Pipelines And Vessels

    PR-23 Series User Guide IM-EN-PR23-E Model Description Sanitary clamp, 2.5 in, insertion length 14 mm ‑H ‑Q Sanitary clamp, 2.5 in for flush-mount adaptor, insertion length 140 mm Varinlineâ in‑line access unit clamp 2 in (DN 50/40) ‑C insertion length 170 mm...
  • Page 117 Chapter 10 – Sensor specifications Model Description 3‑A approved ‑A Sensor type Probe type for tanks and large pipes Refractive index range limits R.I. 1.320–1.530 n (0 … 100 Brix) spinel prism ‑62 R.I. 1.320–1.530 n (0 … 100 Brix) sapphire prism ‑73 R.I.

  • Page 118: Pr-23-Ap Mounting Hardware Model Code

    PR-23 Series User Guide IM-EN-PR23-E 10.4.2 PR‑23‑AP mounting hardware model code Table 23 Mounting hardware for PR‑23‑AP sensor Part number Description VFMA‑23‑PSS Tank bottom flange for PR‑23‑AP, MT4 DN 25/1T VFBP‑23‑PSS Tank bottom blind flange for PR‑23‑AP, MT4 DN 25/1T Model Description Adapter for PR‑23‑AP...

  • Page 119: Table 24 Side Flow Cells, Connection Sanitary Clamp 2.5 In

    Chapter 10 – Sensor specifications Model Description Integral steam nozzle, AISI 316 L ‑SN Integral pressurized water nozzle, AISI 316 L ‑WP Integral water nozzle, AISI 316 L ‑WN Table 24 Side flow cells, connection sanitary clamp 2.5 in Model Description Side flow cell Sensor connection Sanitary clamp, 2.5 in...

  • Page 120: Pr-23-Ap Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 27 Sensor PR‑23‑AP specifications Feature Specification Sensor PR‑23‑AP...

  • Page 121: Pr-23-Ap Parts List

    Chapter 10 – Sensor specifications Feature Specification Sensor protection class IP67, Nema 4X Protection class Protection class 3 Sensor weight 3.0 kg (6.6 lbs) 10.4.4 PR‑23‑AP parts list Item Pcs. Part No. Descrip�on PR-9205 2.5” sanitary ferrule VFMA-23-PSS MT4 DN25/1T APV tank bo�om flange PR-9275 4”...

  • Page 122: Figure 59 Insertion Of Probe Refractometer Pr-23-Ap-Xx-Tss

    PR-23 Series User Guide IM-EN-PR23-E Probe refractometer type PR‑23‑AP‑T is connected to the process by a 2.5 in sanitary clamp. PR‑23‑AP‑R is connected by a 4 in sanitary clamp. CAUTION! For higher process (or ambient) temperatures, use instead a flush mounted...

  • Page 123: Mounting Specifics For Ehedg-Certified Pr-23-Ap Configuration

    To ensure EHEDG compliant installation, follow the mounting specifics provided on the mounting drawing supplied by Vaisala with each refractometer sensor ordered with the ‑EH option. 10.4.7 3‑A Sanitary Standard compliance Ensure that the refractometer is not a source of contamination to the product due to damaged or worn product contact surfaces.

  • Page 124: Compact Process Refractometer Pr-23-Gc

    PR-23 Series User Guide IM-EN-PR23-E This repair service can be completed only by a 3‑A authorized service center (Vaisala factory or regional headquarters). 10.5 Compact process refractometer PR‑23‑GC Compact process refractometer PR‑23‑GC is designed for the general industry small pipeline and bypass line applications, for example, in chemical, oil, gas, petrochemical and kraft pulping processes.

  • Page 125: Table 29 Wafer Flow Cell Model Code

    Chapter 10 – Sensor specifications Model Description ATEX and IECEx certified Ex II 1G, Ex ia IIC T4 Ga (up to zone 0) (T −20 … +65 °C) ‑IA CSA certified Class I, Div.2, Groups A, B, C, D, T4 (T −20 …...

  • Page 126: Pr-23-Gc Specifications

    PR-23 Series User Guide IM-EN-PR23-E Model Description Pressurized water nozzle, G¼ thread female ‑WP Plug for nozzle connection ‑PG Table 30 Pipe flow cell model code Model Description Pipe flow cell Sensor connection L coupling 76.1 mm (insertion length 14 mm) ‑K...

  • Page 127: Table 32 Sensor Pr-23-Gc Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 32 Sensor PR‑23‑GC specifications Feature...

  • Page 128: Pr-23-Gc Parts List

    PR-23 Series User Guide IM-EN-PR23-E 10.5.3 PR‑23‑GC parts list Item Pcs. Part No. Descrip�on PR-9280 Sandvik ferrule 76.1 PR-9283 Sandvik 76.1 reducing ferrule PR-9282 Sandvik clamp FCLC-76.1 PR-9281 Sandvik O-ring FCLG-T-76.1 Teflon® PR-9291 Sandvik O-ring FCLG-V-76.1 Viton PR-9284 PR-23/33-GC head PR-10048...

  • Page 129: Figure 62 Mounting Sensor In Pipe 2.5 In Or Larger

    Chapter 10 – Sensor specifications Figure 62 Mounting sensor in pipe 2.5 in or larger...

  • Page 130: Figure 63 Mounting Sensor In 2 In Pipe

    PR-23 Series User Guide IM-EN-PR23-E Figure 63 Mounting sensor in 2 in pipe...

  • Page 131: Figure 64 Mounting Sensor With Pfc Flow Cell

    Chapter 10 – Sensor specifications Figure 64 Mounting sensor with PFC flow cell Figure 65 Mounting sensor with WFC flow cell...

  • Page 132: Figure 66 Mounting Wafer Flow Cell And Sensor In Vertical Pipe

    PR-23 Series User Guide IM-EN-PR23-E Use gasket material appropriate to the process media Use PTFE Teflon tape for all threaded connections Figure 66 Mounting wafer flow cell and sensor in vertical pipe...

  • Page 133: Probe Process Refractometer Pr-23-Gp

    Chapter 10 – Sensor specifications Use gasket material appropriate to the process media Use PTFE Teflon tape for all threaded connections Figure 67 Mounting wafer flow cell and sensor in horizontal pipe 10.6 Probe process refractometer PR‑23‑GP Probe process refractometer PR‑23‑GP is a general industry model for measuring liquid concentrations in various in‑line applications, like chemicals, fibers, plastics, salts and sodium components.

  • Page 134: Pr-23-Gp Sensor Model Code

    PR-23 Series User Guide IM-EN-PR23-E 10.6.1 PR‑23‑GP sensor model code Table 33 PR‑23‑GP sensor model code Model Description PR‑23 Sensor Sensor model General ‑G Sensor type Probe type for tanks and large pipes Refractive index range limits R.I. 1.320–1.530 n spinel prism ‑62...

  • Page 135: Pr-23-Gp Specifications

    Chapter 10 – Sensor specifications Model Description FM certified to US and Canadian standards Class I, Div.1, Groups A, B, C, D T4 (T ‑IF −20 … +45 °C) NEPSI Certified for use in Ex nA IIC T4 Gc ‑CX NEPSI Certified for use in Ex ia IIC T4 Ga ‑CI Sensor housing...

  • Page 136: Pr-23-Gp Thermal Cover Pr-7062

    PR-23 Series User Guide IM-EN-PR23-E Feature Specification Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −40 °C … 45 °C (−40 °F … 113 °F) Table 35 Sensor PR‑23‑GP specifications Feature Specification Sensor PR‑23‑GP Probe sensor for large pipe line and vessel installation...

  • Page 137: Figure 68 Mounting Thermal Cover On Pr-23-Gp

    Chapter 10 – Sensor specifications Figure 68 Mounting thermal cover on PR‑23‑GP...

  • Page 138: Pr-23-Gp Parts List

    PR-23 Series User Guide IM-EN-PR23-E 10.6.4 PR‑23‑GP parts list Item Pcs. Part No. Descrip�on PR-10009 PR-23-GP-L head PR-10010 PR-23-GP-D head Item Pcs. Part No. Descrip�on PR-10011 PR-23-GP-D-NC head PR-10103 Sensor processor card ANSI 3” 150 lbs flange Screw M3x6 DIN 912 A2 DIN 80 PN 25 flange...

  • Page 139: Pr-23-Gp Mounting Specifications

    Chapter 10 – Sensor specifications 10.6.5 PR‑23‑GP mounting specifications [in] Model 26.7 [1.051] 108 [4.252] PFC-23-GP -ASS-A10-NC 190.5 [7.5] PFC-23-GP -ASS-A20-NC 52.6 [2.071] 152.3 [6] 190.5 [7.5] PFC-23-GP -DSS-D10-NC 25 [1] 115 [4.528] 200 [7.874] 51 [2] PFC-23-GP -DSS-D20-NC 165 [6.496] 200 [7.874] 25 [1] 125 [4.921]...

  • Page 140: Process Refractometer Pr-23-Rp

    PR-23 Series User Guide IM-EN-PR23-E [in] PFC-23-GP-LSS-D20-NC 25 [1] 125 [6.102] PFC-23-GP-LSS-J20-NC 155 [6.102] 51 [2] Figure 71 PR‑23‑GP‑LSS flow cell 10.7 Process refractometer PR‑23‑RP Process refractometer PR‑23‑RP is a heavy-duty refinery model that is designed to support the unique requirements of the refining and petroleum industries. Typical applications are in...

  • Page 141: Pr-23-Rp Sensor Model Code

    Chapter 10 – Sensor specifications A factory acceptance test (FAT), and customized drawings stating client specific information are also available on request. 10.7.1 PR‑23‑RP sensor model code Table 36 PR‑23‑RP sensor model code Model Description PR‑23 Sensor Sensor model Refinery ‑R Sensor type Probe type, wetted materials single piece no weldings Refractive index range limits R.I.

  • Page 142: Pr-23-Rp Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 38 Sensor PR‑23‑RP specifications Feature Specification Sensor PR‑23‑RP...

  • Page 143: Pr-23-Rp Parts List

    Chapter 10 – Sensor specifications 10.7.3 PR‑23‑RP parts list Item Pcs. Part No. Descrip�on Item Pcs. Part No. Descrip�on PR-10103 Sensor processor card PR-10043 PR-23-RP-SS head Screw M3x6 DIN 912 A2 PR-10043-HC PR-23-RP-SS Hastelloy® C 276 PR-10300 Bus terminator card PR-10043-HA PR-23-RP-SS Alloy®...

  • Page 144: Pr-23-Rp Head Parts List

    PR-23 Series User Guide IM-EN-PR23-E 10.7.4 PR‑23‑RP head parts list Item Pcs. Part No. Descrip�on Item Pcs. Part No. Descrip�on PR-23-RP head 2” ANSI 300 flange PR-23-RP head Hastelloy C PR-10049 O-ring 50x3 FPM PR-23-RP head Alloy 20 M6x16 DIN912 A4...

  • Page 145: Pr-23-Rp Dimensions

    Chapter 10 – Sensor specifications 10.7.5 PR‑23‑RP dimensions [in] Figure 74 PR‑23‑RP‑73‑M20...

  • Page 146: Pr-23-Rp Mounting Specifications

    PR-23 Series User Guide IM-EN-PR23-E 10.7.6 PR‑23‑RP mounting specifications The refractometer sensor is installed in the process, either directly by welding a mounting flange to 2 in or larger pipes or vessels, or using a 1 in, 2 in or 3 in cross flow cell. Due to the sensor’s rugged, innovative non-weld sensor body, and self‑cleaning or optional wash...

  • Page 147: Pr-23-Rp Prism Wash System

    2 in ANSI 300 CFC wash nozzle. Both of these components are available from Vaisala. All further components specifically required for the wash system installation, are obtained independently by the customer. These include a 2 in ANSI 300 to 0.5 in ANSI 300 adapter, 0.5 in ANSI check valve, 0.5 in ANSI 300 shut-off valve, 0.5 in...

  • Page 148: Teflon Body Refractometer Pr-23-M/Ms

    PR-23 Series User Guide IM-EN-PR23-E PART PART SPECIFICATIONS SUPPLIED BY INDICATING TRANSMITTER DTR VAISALA SENSOR PR-23-RP VAISALA CFC-RP-M20 FLOW CELL VAISALA 2’’ ANSI 300 CFC WASH NOZZLE VAISALA CABLE BETWEEN DTR AND SENSOR PR-8230-.. VAI/CUSTOMER MAIN SWITCH PR-10900 CUSTOMER/VAI POWER SUPPLY 100-240 VAC/50-60Hz...

  • Page 149: Pr-23-M Sensor Model Code

    Chapter 10 – Sensor specifications Figure 78 PR‑23‑M/MS sensor The previous figure shows the structure of the sensor. The flow cell (3) and the sapphire plate (1) are fixed to the stainless steel sensor with four screws. The flow cell (3) is sealed by a Kalrez O‑ring (2).

  • Page 150: Table 40 Flow Cell For Sensor Pr-23-M

    PR-23 Series User Guide IM-EN-PR23-E Model Description Electrical classification General purpose ‑GP ATEX and IECEx certified Ex II 3G, Ex nA IIC T4 Gc (up to zone 2) (T −20 … +65 °C) ‑AX FM certified Class I, Div.2, Groups A, B, C, D T6 (T −20 …...

  • Page 151: Pr-23-M Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 42 Sensor PR‑23‑M specifications Feature Specification Sensor PR‑23‑M...

  • Page 152: Pr-23-M Parts List

    PR-23 Series User Guide IM-EN-PR23-E 10.8.3 PR‑23‑M parts list 28 29 Item Pcs. Part No. Descrip�on Item Pcs. Part No. Descrip�on Screw DIN 7991 M5x70 A4 PR-10036 PR-23 compact sensor CORE module PR-23-M endplate PR-9011 Thermal conductor PR-9129 PR-03/23-M protec�on cover...

  • Page 153: Table 45 Flow Cell For Sensor Pr-23-Ms

    Chapter 10 – Sensor specifications Model Description Refractive index range limits R.I. 1.320–1.530 n sapphire prism R.I. 1.260–1.470 n sapphire prism Electrical classification General purpose ‑GP ATEX and IECEx certified Ex II 3G, Ex nA IIC T4 Gc (up to zone 2) (T −20 …...

  • Page 154: Pr-23-Ms Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 47 Sensor PR-23-MS specifications Feature Specification Sensor PR‑23‑MS...

  • Page 155: Pr-23-Ms Parts List

    Chapter 10 – Sensor specifications Table 48 Flow cell for PR‑23‑MS specifications Feature Specification Process connection Thread G ½ in or ½ in NPT female Process pressure Max. 10 bar (145 psi) Process temperature Max. 130 °C (266 °F) Process wetted parts, standard Teflonâ...

  • Page 156: Pr-23-M/Ms Mounting Specifications

    PR-23 Series User Guide IM-EN-PR23-E 10.8.7 PR‑23‑M/MS mounting specifications Teflonâ body refractometer PR‑23‑M is connected to the process by a G ½ in female or a ½ in NPT process connection, see the figure below. PR‑23‑MS is connected to the process by a ¼...

  • Page 157: Pr-23-W Sensor Model Code

    Chapter 10 – Sensor specifications The sensor itself is built just like the PR‑23‑M sensor, see Teflon body refractometer PR‑23‑M/MS (page 146), and it is fixed to the Saundersâ body in the same way, with a sapphire plate and a Kalrezâ O‑ring to keep all the metallic parts away from the process liquid.

  • Page 158: Table 50 Saundersâ Valve Body Flow Cell For Sensor Pr-23-W

    PR-23 Series User Guide IM-EN-PR23-E Model Description Adapter for 3 in/DN 80 valve body Adapter for 4 in/DN 100 valve body Electrical classification General purpose ‑GP ATEX and IECEx certified Ex II 3G, Ex nA IIC T4 Gc (up to zone 2) (T −20 …...

  • Page 159: Pr-23-W Specifications

    LED 589 nm wavelength, sodium light Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature −20 °C … 45 °C (−4 °F … 113 °F) Table 52 Sensor PR‑23‑W specifications Feature Specification Sensor PR‑23‑W...

  • Page 160: Table 53 Saundersâ Valve Body Specifications

    PR-23 Series User Guide IM-EN-PR23-E Feature Specification Process temperature −20 °C … +130 °C (−4 °F … +266 °F) Process wetted parts, standard Teflon® (PTFE), sapphire prism, prism gaskets MTF (Modified Teflon) Sensor protection class IP67, Nema 4X Protection class...

  • Page 161: Pr-23-W Parts List

    Chapter 10 – Sensor specifications 10.9.3 PR‑23‑W parts list Item Pcs. Part No. Descrip�on Saunders valve body PFA/ETFE lining ANSI 2”/DIN 50/JIS 50 Saunders valve body PFA/ETFE lining ANSI 3”/DIN 80/JIS 80 Saunders valve body PFA/ETFE lining ANSI 4”/DIN 100/JIS 100 Facing for 2”...

  • Page 162: Figure 84 Pr-23-W Mounting

    PR-23 Series User Guide IM-EN-PR23-E Related drawing. No modi cation permitted without the approval of the authorized person. Figure 84 PR‑23‑W mounting...

  • Page 163: Intrinsically Safe Refractometers Pr-23

    IECEx scheme for Ex ia IIC T4 Ga. The certificate number is GYJ19.1133X. This certification covers the following Ex standards: GB 3836.1-2010, GB 3836.4-2010 and GB 3836.20-2010. Only trained service personnel of Vaisala and its representatives are permitted to service the intrinsically safe PR‑23‑…‑IA/‑IF/‑CI refractometer. Servicing must be performed according to separate instructions defined by Vaisala and must be reported to Vaisala.

  • Page 164: Figure 85 Refractometer System Pr-23

    (page 165) are followed. If the instrument has been in any way damaged during transportation, return it to your nearest Vaisala service point for checkup before installation. Never install a damaged instrument into the process line. The intrinsically safe sensor PR‑23‑…‑IA/‑IF/‑CI is identified by the nameplate, see the...

  • Page 165: Figure 86 Intrinsically Safe Sensor Nameplates

    Chapter 10 – Sensor specifications 3-A approved intrinsically safe -IA sensor Other intrinsically safe -IA sensor 3-A approved intrinsically safe -IF sensor Other intrinsically safe -IF sensor 3-A approved intrinsically safe -CI sensor Other intrinsically safe -CI sensor Figure 86 Intrinsically safe sensor nameplates An intrinsically safe sensor has a different processor card and a different terminator card than a standard sensor, other parts are as in standard sensor (see earlier in this chapter for full parts list).

  • Page 166: Figure 87 Intrinsically Safe Parts

    PR-23 Series User Guide IM-EN-PR23-E PR-10300-Ex terminator card PR-10101-Ex processor card Figure 87 Intrinsically safe parts WARNING! Do not replace any part of an intrinsically safe sensor with a standard sensor part. Contains lightmetals Ignition hazard! Avoid impact! Figure 88 Warning sticker...

  • Page 167: Intrinsically Safe Mounting

    CAUTION! If any of the system parts are affected by a sudden impact, power off immediately and have the system checked by trained Vaisala service personnel before it is used again. The following figures describe the electrical connections for PR‑23‑…‑IA/‑CI and the...

  • Page 168: Figure 89 Intrinsically Safe Wiring, Pr-23

    PR-23 Series User Guide IM-EN-PR23-E Figure 89 Intrinsically safe wiring, PR‑23‑…‑IA/‑CI according to WRG‑362...

  • Page 169: Figure 90 Intrinsically Safe Wiring, Pr-23

    Chapter 10 – Sensor specifications Figure 90 Intrinsically safe wiring, PR‑23‑…‑IF with STR according to WRG‑478...

  • Page 170: Isolator/Barriers

    PR-23 Series User Guide IM-EN-PR23-E In the United States, installation must be in accordance with the applicable requirements of ANSI/ISA RP12.6 and the national electrical code (ANSI/NFPA 70). In Canada, installation must be in accordance with the applicable requirements of Canadian electrical code part I C22.2.1 section 18 and appendix F.

  • Page 171: Figure 91 Isolator Unit Wiring

    Chapter 10 – Sensor specifications ISOLATOR UNIT Power cable PR-8250-xxx 0 1 1 1 24VDC (max 100m) Cable Cable PR-8230-xxx PR-8260-xxx (max 100m) (max 100m) Figure 91 Isolator unit wiring If the power to isolator unit terminals is not correctly connected, +24 VDC to terminal 14 (+vs) and zero to terminal 13 (-vs), the transmitter STR displays the message NO SIGNAL.

  • Page 172: Safe-Drive

    PR-23 Series User Guide IM-EN-PR23-E 11. Safe-Drive The Safe‑Drive system is used for safe insertion and removal of a refractometer sensor while the process line is under full process flow and pressure. The Safe‑Drive system is typically used in a continuous process with infrequent shutdowns and large pipe size, diameter 50 mm (2 in) or above, for example in wood pulp industry.

  • Page 173: Table 55 Pr-23-Sd And Isolation Valve Sdi-23 Specifications

    Temperature sensor Built‑in Pt‑1000 Temperature compensation Automatic, digital compensation Instrument verification With certified refractive index liquids and Vaisala documented procedure Ambient temperature -20 °C … 45 °C (-4 °F … 113 °F) Table 55 PR-23-SD and isolation valve SDI-23 specifications Feature...

  • Page 174: Safe-Drive Component Parts Lists

    PR-23 Series User Guide IM-EN-PR23-E 11.3 Safe‑Drive component parts lists 11.3.1 PR-23-SD sensor 12 13 16 17 23 22 Item Pcs. Part No. Descrip�on Item Pcs. Part No. Descrip�on PR-10015 PR-23-SD head Screw M5x10 DIN 912 A2 Sensor processor card PR-10101 Safe-Drive™ flange...

  • Page 175: Safe-Drive Isolation Valve Sdi2-23

    Chapter 11 – Safe-Drive 11.3.2 Safe‑Drive isolation valve SDI2‑23 Item Pcs. Part No. Descrip�on PR-11000 SDI flange and nozzle M12 nut A4 weld assembly SAF 2205 SDI isola�on valve handle PR-11001 DN 40 ball valve assembly: parts 2, 6, 7 Safety lock screw DN 40 ball valve Safety lock PR-11009...

  • Page 176: Safe-Drive Steam Wash System Parts

    PR-23 Series User Guide IM-EN-PR23-E 11.3.3 Safe‑Drive steam wash system parts Figure 95 Safe‑Drive steam wash system parts...

  • Page 177: Safe-Drive Retractor Sdr2-23

    Safe‑Drive retractor for sensor insertion and removal. A welding guide sticker is also provided for accurate cutting and welding. By special order the Safe‑Drive isolation valve can also be welded to a suitable length of pipe at the Vaisala factory to be part of the piping on site.

  • Page 178: Figure 97 Selecting Mounting Location

    PR-23 Series User Guide IM-EN-PR23-E [ft] 700 [2] Floor, work platform 1000-1500 [3-5] Figure 97 Selecting mounting location The Safe‑Drive system is mounted on a vertical pipe or horizontal pipe. When choosing mounting location, keep in mind that you have to be able to lift the retractor with sensor...

  • Page 179: Figure 98 Mounting Safe-Drive On Vertical Pipe

    Chapter 11 – Safe-Drive Side view 10.71 11.6 1.27 [in] Figure 98 Mounting Safe‑Drive on vertical pipe...

  • Page 180: Welding Isolation Valve To Pipe

    For the Safe-Drive isolation valve, two holes – 50 mm (2 in) and 25 mm (1 in) – are drilled to the pipe and the bridge between the holes is then removed. To help you place the holes correctly, Vaisala delivers with the valve an installation guide sticker.

  • Page 181: Figure 100 Safe-Drive Isolation Valve Installation Guide Sticker

    Chapter 11 – Safe-Drive Figure 100 Safe-Drive isolation valve installation guide sticker The welding steps are as follows, see Figure 101 (page 180) Figure 102 (page 181): 1. Clean the surface of the pipe around the installation area and place the guide sticker across the pipe.

  • Page 182: Figure 101 Welding Safe-Drive Isolation Valve To Horizontal Pipe

    PR-23 Series User Guide IM-EN-PR23-E Installation guide sticker (1:1) Valve handle always on top Large bayonet always on top Assembly/disassembly of isolation valve Material SAF2205 Torque 35Nm (26 lbf ft) 25 (1.0) Drill 50mm(2") and 25mm (1") Welding holes and cut between [in] Figure 101 Welding Safe-Drive isolation valve to horizontal pipe...

  • Page 183: Figure 102 Welding Safe-Drive Isolation Valve To Vertical Pipe

    Chapter 11 – Safe-Drive Installation guide sticker (1:1) Valve handle always on top Large bayonet always on top Torque 35Nm (26lbf ft) Assembly/Disassemble isolation valve for welding Material SAF2205 Drill 50mm (2") and 25mm (1") Welding holes and cut between [in] Figure 102 Welding Safe-Drive isolation valve to vertical pipe...

  • Page 184: Pr-23-Sd System Wiring

    PR-23 Series User Guide IM-EN-PR23-E 11.4.2 PR-23-SD system wiring Figure 103 PR-23-SD system wiring 11.4.3 Steam piping for SDI2 This section describes the steam piping system for SDI2, for example for weak liquor and black liquor.

  • Page 185: Figure 104 Mounting Steam Wash To Isolation Valve

    Chapter 11 – Safe-Drive Box steam flushing before retraction Warning : Drain valves, normally closed Figure 104 Mounting steam wash to isolation valve If the steam pressure exceeds the maximum pressure differential, a pressure-reducing valve PR‑3341‑J must be installed to reduce the steam pressure to optimal design.

  • Page 186: Figure 105 Pressure-Reducing Valve Pr-3341-J

    PR-23 Series User Guide IM-EN-PR23-E Figure 105 Pressure-reducing valve PR‑3341‑J Note the orientation of the strainer.

  • Page 187: High Pressure Water Piping For Sdi2

    Chapter 11 – Safe-Drive Vertical Horizontal Figure 106 Install strainer horizontally 11.4.4 High pressure water piping for SDI2 The following section describes the high pressure water piping system for SDI2, for example for green liquor. WARNING! Hard-scale removal in green liquor handling systems: make sure that the sensor and wash nozzle materials are suitable for the hard-scale removal chemicals.

  • Page 188: Water Consumption Of High Pressure Wash System

    PR-23 Series User Guide IM-EN-PR23-E Prism wash -see manual for recommended wash pressures and times Box flushing before retraction Warning: Drain valves, normally closed Description Extended nipple 5344 1/4" ball valve PR-3516 Check valve PR-3304 Figure 107 Mounting high pressure water wash to isolation valve 11.4.5 Water consumption of high pressure wash system...

  • Page 189: Non-Retractable Wash Nozzle Sdi2-23-Wpr/Wpn-Xs

    Chapter 11 – Safe-Drive Water add Pressure 10 s wash 10 s wash every 15 min Nozzle flow 34 bar (500 psi) 2.2 l (0.58 gal) 8.8 l (2.3 gal)/h 0.22 l (0.06 gal)/s 41 bar (600 psi) 2.5 l (0.66 gal) 10 l (2.6 gal)/h 0.25 l (0.07 gal)/s 11.4.6 Non-retractable wash nozzle SDI2‑23‑WPR/WPN‑XS...

  • Page 190: Figure 108 Installing Non-Retractable Wash Nozzle

    PR-23 Series User Guide IM-EN-PR23-E Figure 108 Installing non-retractable wash nozzle Install the wash nozzle (1) into the SDI valve. The flat surface of the wash nozzle must be on top. Insert the nut (2) and hand tighten it to the thread.

  • Page 191: Safe Sensor Insertion And Removal For Safe-Drive Generation 2.1

    These instructions are for Safe‑Drive generation 2.1. If you have Safe‑Drive generation 1 or generation 2, consider upgrading to generation 2.1. Upgrade from generation 1 requires shutdown, upgrade from generation 2 can be done at any time. See https:// www.vaisala.com/en/safe-drive-refractometer-pr-23-sd-manuals-safety-instructions-and- safety-videos for more information on how to upgrade. WARNING! Always use the Safe‑Drive retractor for sensor insertion and removal! Safe...

  • Page 192: Inserting Safe-Drive Sensor

    PR-23 Series User Guide IM-EN-PR23-E Figure 109 Recommended work zone by side of SD 11.5.1 Inserting Safe‑Drive sensor • Check that the gaskets and gasket surfaces are clean and undamaged...
  • Page 193 Chapter 11 – Safe-Drive • Remove the sensor cable gland and unlock the inner casing 1. Insert the sensor into inner casing. a. Make sure that the sensor cable gland has been taken off. Match the bayonet closing with sensor flange so that the latch is slightly to the left of the top and the sensor cable passage is straight down.
  • Page 194 PR-23 Series User Guide IM-EN-PR23-E 3. The sensor should now be inside retractor and about 140 mm (5.5 in) of the screw thread should stick out of the middle of the wheel. a. Unlock the latch on outer casing. b. Take a firm hold of the handwheel and handle and lift retractor (with sensor) over the isolation valve flange.
  • Page 195 Chapter 11 – Safe-Drive 5. Insert the safety pin. Lock the safety pin with safety clip. WARNING! Do not proceed until you have completed this step. 6. Close the blow-out ball valve under isolation valve. a. Lift up the isolation valve handle locking plate. b.
  • Page 196 PR-23 Series User Guide IM-EN-PR23-E 7. Now the sensor can be inserted into the process. a. Turn the handwheel counterclockwise until it stops, that is until the sensor flange connects with isolation valve and only the end of the screw thread is visible.
  • Page 197 Chapter 11 – Safe-Drive 8. Fit the four M12 nuts to the bolts holding the sensor to isolation valve and screw them on with a 19 mm or ¾ in wrench. CAUTION! Do not overtighten the nuts, set the torque at 50 Nm (37 ft/lbs). WARNING! Do not proceed until you have completed this step.
  • Page 198 PR-23 Series User Guide IM-EN-PR23-E 10. Turn the wheel 90° counterclockwise. a. Open the locking latch on outer casing. b. Rotate outer casing handle 60° counterclockwise. 11. Turn the handwheel counterclockwise to drop the thread (1), and lift off outer casing.
  • Page 199 Chapter 11 – Safe-Drive 12. Lift up the latch of inner casing to unlock it. a. Rotate the casing 60° counterclockwise to release it from the flange. b. Lift inner casing away from the sensor head. 13. Ensure the DTR is switched off. Connect the sensor cable to the DTR. a.

  • Page 200: Removing Safe-Drive Sensor

    PR-23 Series User Guide IM-EN-PR23-E 11.5.2 Removing Safe‑Drive sensor 1. Switch off the DTR to cut off power from the sensor. Close wash valve. a. Unscrew and remove sensor nameplate. b. Loosen the cable gland. c. Unscrew the wires. d. Remove the sensor cable and cable gland.
  • Page 201 Chapter 11 – Safe-Drive 3. Rotate Inner casing 60° clockwise to lock it onto the flange (1) and lock inner casing latch (2). 4. Open the locking latch on outer casing. Grab outer casing with one hand on the handle and the other hand on the wheel.
  • Page 202 PR-23 Series User Guide IM-EN-PR23-E 5. Rotate outer casing 60° clockwise to lock the bayonet (1) and lock the outer casing latch (2). 6. Insert the safety pin (1) and lock the safety pin with the safety clip (2). WARNING!
  • Page 203 Chapter 11 – Safe-Drive 7. Open and remove the four M12 nuts on the bolts holding the sensor to Isolation valve using a 19 mm or ¾ in wrench. 8. To remove the sensor from the process, turn the handwheel clockwise until it stops. At this stage about 140 mm (5.5 in) of the thread should stick out from the middle of the wheel.
  • Page 204 PR-23 Series User Guide IM-EN-PR23-E 9. Lift up Isolation valve handle locking plate. a. Close Isolation valve by turning the handle 90°. Isolation valve is properly closed when the handle points away from the sensor and the locking plate drops down over the handle.
  • Page 205 Chapter 11 – Safe-Drive 10. Remove the safety clip (1) and pull out the safety pin (2). 11. Lift open outer casing locking latch (1), and rotate outer casing 60° counterclockwise so that the handle comes up on top (2).
  • Page 206 PR-23 Series User Guide IM-EN-PR23-E 12. Take a firm hold on the handwheel and the handle and pull out retractor with sensor inside. WARNING! A firm hold of the tool is essential as the combination of the tool and the sensor is noticeably heavier than retractor alone.
  • Page 207 Chapter 11 – Safe-Drive 13. Put retractor with sensor onto a table or similar surface so that the handwheel has space to turn. a. Turn the handwheel counterclockwise to drop the thread, that is until outer casing is no longer connected to the parts inside. b.

  • Page 208: Wash Nozzle Insertion And Removal

    PR-23 Series User Guide IM-EN-PR23-E 11.6 Wash nozzle insertion and removal WARNING! Non‑retractable wash nozzle SDI2‑23‑WPR/WPN‑XS for high pressure water can only be inserted or removed when the process pipe is empty. Insertion and retraction instructions below are valid only for wash nozzles SDI2‑23‑SN2 for steam and SDI2‑23‑WP2 for high pressure water.
  • Page 209 Chapter 11 – Safe-Drive 2. Close the 1/4 in check port valve under the nozzle isolation valve (1). OPEN CLOSE a. Open the isolation valve (2) by turning the handle counterclockwise. b. Push the nozzle to the process (3). c. Attach the nozzle to the nozzle guide with one s pecial M5x10 screw (4) using a 5 mm Allen key.

  • Page 210: Removing Wash Nozzle

    PR-23 Series User Guide IM-EN-PR23-E 3. Connect the lines in the following order. OPEN a. STEAM: Connect the steam line and sensor flush flexible line to the nozzle T-piece (1,2). b. WATER: Connect the water line to 1/4 in valve (1,2).
  • Page 211 Chapter 11 – Safe-Drive 1. Close the steam line supply valve (1). WARNING Make absolutely certain that the steam supply is shut off before starting nozzle removal procedure CLOSE a. STEAM: Remove the steam supply line (2) and the sensor flush flexible line (2) from the nozzle T-piece.
  • Page 212 PR-23 Series User Guide IM-EN-PR23-E 2. Remove the safety pin (4). CLOSE OPEN a. Slide the nozzle out from the process (5) until the guide plate stops it. b. Close the nozzle isolation valve (6) by turning the handle clockwise.

  • Page 213: Thermal Cover For Sdi2-23

    Chapter 11 – Safe-Drive 3. Lock the isolation valve handle with the safety pin (1). a. Remove the special 5x10 guide plate screw (2) using a 5 mm Allen key. b. Remove the nozzle from the isolation valve completely (3). 11.7 Thermal cover for SDI2‑23 Thermal cover PR‑7064 prevents heat flow between process and ambient surroundings.

  • Page 214: Figure 110 Mounting Thermal Cover

    PR-23 Series User Guide IM-EN-PR23-E Pass SDI shut-off valve handle through the hole provided Wrap cover under and around the SDI valve body aligning the cutouts with the drain valve. in the thermal cover, making sure the label is facing toward you.

  • Page 215: Blinding Safe-Drive System

    Chapter 11 – Safe-Drive Figure 111 Removing thermal cover Right hand fasteners Left hand fasteners 11.8 Blinding Safe‑Drive system A Safe‑Drive connection that is no longer used can be secured with blind plugs.

  • Page 216: Identifying Your Refractometer Generation

    Safe‑Drive generation 2.1. If you downloaded the instructions online or ordered a manual as a spare part, it is possible that your Safe‑Drive system is of different generation and a different set of instructions is needed. Vaisala strongly recommends upgrading the system to generation 2.1, for more information see http://www.kpatents.com/support/product-...

  • Page 217: Figure 113 Identifying Different Safe-Drive Generations

    Chapter 11 – Safe-Drive Markings on retractor handle Generation 1 (2006-2014): Retractor without safety bracket. Isolation valve without safety bracket. Generation 2 (2014-2017): Generation 2.1 (2017-): Retractor with safety bracket. Retractor with safety bracket and Isolation valve with safety bracket. integrated safety clip and pin.

  • Page 218: Process Refractometers In Potentially Explosive Atmosphere

    The PR‑23 refractometer series can be used in locations with potentially explosive atmosphere with the following modifications, made by Vaisala Oyj. The refractometer sensor’s compliance with the Essential Health and Safety Requirements is assured by complying with standard EN 50 021:1999.

  • Page 219: Figure 114 Refractometer System Pr-23

    Chapter 12 – PR‑23 process refractometers in potentially explosive atmosphere Hazardous area Safe Area (up to Zone 2) WIRING SEE WRG-342 Figure 114 Refractometer system PR‑23‑…‑AX/FM/CS/CX The ATEX/FM/CSA approved sensors PR‑23‑…‑AX/FM/CS/CX are identified by the sensor nameplate, see the following figure. The indicating transmitter is a standard DTR. The approvals are valid for sensors PR‑23‑AC, PR‑23‑AP, PR‑23‑GC, PR‑23‑GP, PR‑23‑M, PR‑23‑MS, PR‑23‑SD, PR‑23‑W and PR‑23‑RP.

  • Page 220: Figure 115 Pr-23

    PR-23 Series User Guide IM-EN-PR23-E PR-23-AC/AP-...-AX nameplate -AX nameplate, all other models EX approval symbol PR-23-AC/AP-...-FM nameplate -FM nameplate, all other models FM approval symbol PR-23-AC/AP-...-CS nameplate -CS nameplate, all other models CSA approval symbol PR-23-AC/AP-...-CX nameplate -CX nameplate, all other models Nepsi approval symbol Figure 115 PR‑23‑…‑AX/FM/CS/CX sensor nameplates...

  • Page 221: Installation

    Chapter 12 – PR‑23 process refractometers in potentially explosive atmosphere 12.2 Installation Sensor wiring must follow drawing WRG‑367 or WRG‑350, see Figure 116 (page 220). See also Figure 16 (page 43) Figure 18 (page 45). WARNING! The FM unit installations must comply with the relevant requirements of National Electrical Code (ANSI/NFPA 70) for Division 2 Hazardous (Classified) Locations and all instructions in this manual.

  • Page 222: Figure 116 Safe Sensor Wiring

    PR-23 Series User Guide IM-EN-PR23-E Safe sensor wiring according to WRG-367 (100-240 VAC) Safe sensor wiring according to WRG-350 (24 VDC) Figure 116 Safe sensor wiring CAUTION! Do not modify the unit or use it in ways not described in the documentation.
  • Page 223 Chapter 12 – PR‑23 process refractometers in potentially explosive atmosphere CAUTION! Do not connect or disconnect the sensor connector when the circuits are energized. Switch off the power from indicating transmitter DTR external power switch before disconnecting the sensor cable from the sensor. After connecting the sensor cable back to the sensor, you can switch power back on.

  • Page 224: Indicating Transmitter Dtr And Str Specifications

    S/N: T06816 S/N: T06802 Tag: Tag: 24 V DC, 30 VA 100-240 V AC, 50/60 Hz, 30 VA Made by VAISALA Oyj, Vantaa, Finland Made by VAISALA Oyj, Vantaa, Finland www.vaisala.com www.vaisala.com IP66 IP66 Figure 117 Indicating transmitter DTR serial number label...

  • Page 225: Indicating Transmitter Model Codes

    Chapter 13 – Indicating transmitter DTR and STR specifications 13.2 Indicating transmitter model codes Table 58 Indicating transmitter DTR and STR model codes Model Description Indicating transmitter (connectivity for two sensors) Indicating transmitter (connectivity for one ‑IA/‑IF/‑CI sensor) Cable connection ½ in NPT type conduit hubs for CSA certified transmitter M20x1.5 metric cable glands for general purpose Electrical classification General purpose...
  • Page 226 PR-23 Series User Guide IM-EN-PR23-E Feature Specification Current outputs Two current outputs configurable independently to indicate process concentration or temperature of either sensor. Sensor connectivity, DTR One or two sensors can be connected to the transmitter. Sensors independent of each other: own parameter sets and usable in different applications.

  • Page 227: Transmitter Parts List

    Chapter 13 – Indicating transmitter DTR and STR specifications 13.4 Transmitter parts list 7,1 7,2 15,2 15,1 Figure 119 Indicating transmitter DTR and STR parts (STR-specific parts in italics)

  • Page 228: Interconnecting Cable

    PR-23 Series User Guide IM-EN-PR23-E 14. Interconnecting cable 14.1 Interconnecting cable model code Table 60 Interconnecting cable model code Part number Description PR-8230 Interconnecting cable between transmitter and sensor Cable length -010 • 10 m (33 ft), standard length • Specify cable length in meters with 10 meter increments -_ _ _ Max.

  • Page 229: Ethernet Connection Specification

    DTR. This document gives all the specifications necessary to write a communications program for downloading purposes. It is also possible to get a ready-to-install communications software from Vaisala. More information ‣ Sensor verification certificate (page 246) 15.1 Cable requirements and connection...

  • Page 230: Figure 121 Connecting Dtr To Lan

    PR-23 Series User Guide IM-EN-PR23-E P OWE R PRO C ESS INSTRUMENTS S traight-through cable Figure 121 Connecting DTR to LAN If you are connecting the DTR to a hub or switch or WLAN access point, please consult the user guide of your hub/switch/access point for the correct cable type, as shown in the following figures.

  • Page 231: Connecting Ethernet Cable

    Chapter 15 – Ethernet connection specification Check media P OWE R converter manual Fiber Media Media for Ethernet converter converter cable type PRO C ESS INSTRUMENTS Figure 124 Using fiber optics Ethernet 15.1.2 Connecting Ethernet cable To connect the Ethernet cable to the DTR, open the DTR’s enclosure cover, loosen the front panel screw and open the front panel.

  • Page 232: Connection Settings

    PR-23 Series User Guide IM-EN-PR23-E Figure 125 Ethernet connector on underside of front panel The DTR has automatic speed negotiation, and automatically finds out what the optimal speed for the connection is and chooses accordingly, either 10 Mbit/s or 100 Mbit/s speed.

  • Page 233: Ip Settings For Stand-Alone Computer

    Chapter 15 – Ethernet connection specification The DTR address is changed manually through the Calibration menu through the following path: 5 Calibration > 2 Outputs > 6 Network Type the new IP address and press Enter to change the address. 15.2.2 IP settings for stand-alone computer If you connect a non-networking (stand-alone) computer directly to a DTR with a cross-over cable, the easiest solution is to check the computer’s network settings and conform the...

  • Page 234: Testing Ethernet Connection

    PR-23 Series User Guide IM-EN-PR23-E You may have to connect the cross-over cable and power on the DTR before your computer generates an IP address for the Ethernet connection (computer reboot may also be required). The connection does not work if the computer and the DTR have exactly the same IP address.

  • Page 235: Troubleshooting Connection

    Chapter 15 – Ethernet connection specification Figure 127 Ping OK 15.3.1 Troubleshooting connection Figure 128 Ping error message If you get a ping error message, check your connections. Open the DTR cover and front panel and check the diagnostic LEDs of the Ethernet connector, see Connecting Ethernet cable (page 229).

  • Page 236: Instrument Homepage

    PR-23 Series User Guide IM-EN-PR23-E Keep both the DTR and your computer powered while you check the diagnostic LEDs. If both LED lights are turned off, check the following: • Both the DTR and the device in the other end of the cable are powered on •...

  • Page 237: Remote Panel

    Chapter 15 – Ethernet connection specification Figure 129 Instrument homepage open in browser Opening the instrument homepage 1. Establish a working Ethernet connection to the DTR. 2. Start your preferred web browser (for example Firefox, Edge, Safari, Opera or Chrome). 3. Type the DTR IP address to the address bar. The DTR IP address for a factory-set DTR it is http://192.168.23.254/ (the address used...

  • Page 238: Sensor Verification Certificate

    The main purpose of the Ethernet connection is to collect measurement data from the instrument. To program a downloading facility, see the specifications in the following sections. Vaisala guarantees that the specifications are correct, but cannot assume any responsibility or provide support for software. 15.5.1 Communication protocol The communication protocol is based on UDP/IP to port 50023.
  • Page 239 Chapter 15 – Ethernet connection specification • (any): request data (depends on the request) • (any): fill-in data The maximum size of the message is 1472 octets (bytes). The packet number is echoed back by the DTR, but not processed in any way. The packet numbers do not have to be sequential, any 32-bit value is valid.

  • Page 240: Request-Response Pair Specification

    PR-23 Series User Guide IM-EN-PR23-E The server (DTR) may send the response keys in any order. It will send the mandatory keys of the specific request, but it may omit any other keys. The server may also send keys that are not specified in this document, but the client (computer) may ignore them.
  • Page 241 Chapter 15 – Ethernet connection specification Specification Description Request ID Request data Response key The DTR information query 0x00000002 (none) • *DTRserial: string, information gives the basic information of DTR serial number the DTR assembly. • *ProcessorSerial: string, processor card serial number •...

  • Page 242: Error Message Specification

    PR-23 Series User Guide IM-EN-PR23-E Specification Description Request ID Request data Response key Measurement The measurement result query 0x00000004 0x00000000 • Status: string, sensor results gives the measured and (sensor A) status message calculated measurement values • Slope: float, image 0x00000001 from the chosen sensor.
  • Page 243 Chapter 15 – Ethernet connection specification There may also be error-dependent extra keys. Other error codes may be returned. 0x00000003 is to be handled as unknown request. Codes with higher numbers refer to internal errors; contact Vaisala for more information on these.

  • Page 244: Sensor Verification

    In cases where no such standards exist, the basis used for calibration must be documented. Vaisala verifies the calibration of all delivered instruments according to a procedure similar to the one described Refractive index n D verification (page 242).

  • Page 245: Handling R.i. Liquids

    As the specified accuracy of PR‑23 is ±0.0002, the representative level is the sum of the three accuracy specifications, ±0.0004. Vaisala provides a set of standard R.I. liquids, PR‑2300, containing these five liquids. You can order the set directly from Vaisala or your nearest representative.

  • Page 246: Figure 133 Verification Display

    PR-23 Series User Guide IM-EN-PR23-E Figure 133 Verification display Clean and dry the prism and the sample holder very carefully between the RI liquids. Use a suitable solvent, for example ethanol or IPA (Isopropyl alcohol). To check that the standard liquid is properly wetting the prism, it is possible to press soft key OPT.

  • Page 247: Figure 135 Verification In Progress

    Chapter 16 – Sensor verification Figure 135 Verification in progress The sample holder keeps the sample on the prism surface and also blocks the ambient light from reaching the prism. Press COMPLETE in the verification display finishes the verification procedure and calls up the verification results.

  • Page 248: Sensor Verification Certificate

    PR-23 Series User Guide IM-EN-PR23-E 16.3 Sensor verification certificate The DTR stores the most recent verification done on the DTR and the results of that verification can be viewed and printed on the instrument homepage by following the Verification link on the link bar.
  • Page 249 Chapter 16 – Sensor verification The date and time settings are taken from the computer used to view the verification certificate. The DTR does not have timekeeping functionality. To print the verification certificate, use your browser’s print function. The page is designed so that with browser default settings it normally fits onto a single sheet of A4 or letter sized paper;...

  • Page 250: Figure 138 Instrument Verification Certificate

    PR-23 Series User Guide IM-EN-PR23-E r e t c i f i t a p t t s . f PROCESS REFRACTOMETER PR-23 Sensor verification Page loaded on February 2, 2009 at 03:19:28 PM Sensor information Serial number: R05676 Test results...

  • Page 251: Corrective Action

    (available in Appendix C) and send it to your nearest representative or email the collected information to helpdesk@vaisala.com and wait for further instructions. For the sensor verification form collect data from the Verification step 2 display and the Verification results display.

  • Page 252: Figure 140 Finding Verification Information For Sensor Verification Form

    PR-23 Series User Guide IM-EN-PR23-E Figure 140 Finding verification information for sensor verification form...

  • Page 253: Regulatory Compliance And Certifications

    Chapter 17 – Regulatory compliance and certifications 17. Regulatory compliance and certifications 17.1 Declaration of conformity for PR-23 series refractometers The following Declaration of Conformity confirms compliance with the applicable EU/EEA requirements and applies to all PR-23 refractometer models.
  • Page 254 – Part 1: General requirements EN 61326-1:2013 Electrical equipment for measurement, control and laboratory use – EMC requirements – intended for use in industrial locations Signed for and on behalf of Vaisala Oyj, in Vantaa, on 1 September 2019 ______________________________________ Jukka Lyömiö...

  • Page 255: Declaration Of Conformity For Pr-23

    Chapter 17 – Regulatory compliance and certifications 17.2 Declaration of conformity for PR-23-...-AX models (ATEX) The following declaration of conformity confirms compliance with the European ATEX requirements and applies to PR‑23‑…‑AX refractometer models.
  • Page 256 – EMC requirements – intended for use in industrial locations DEKRA Certi cation B.V. has issued type examination certi cate KEMA 05ATEX1183 X for this product. Signed for and on behalf of Vaisala Oyj, in Vantaa, on 1 November 2019 ______________________________________ Jari-Pekka Mörsky...

  • Page 257: Declaration Of Conformity For Pr-23

    Chapter 17 – Regulatory compliance and certifications 17.3 Declaration of conformity for PR-23-...-IA models (ATEX) The following declaration of conformity confirms compliance with the European ATEX requirements and applies to PR‑23‑…‑IA refractometer models.
  • Page 258 – EMC requirements – intended for use in industrial locations Notified body Eurofins Expert Services Oy (number 0537) has issued EU-type examination certificate EESF 19 ATEX 028X for this product. Signed for and on behalf of Vaisala Oyj, in Vantaa, on 1 September 2019 ______________________________________ Jukka Lyömiö...

  • Page 259: Appendix A: Glossary And Abbreviations

    Appendix A – Glossary and abbreviations Appendix A. Glossary and abbreviations Term Definition Charge Couple Device, sensor optical element. CORE, CORE Optics Compact Optical Rigid Element: All measuring components are in one solid module, the CORE (Optics) module. Indicating transmitter DTR, Dual sensor indicating transmitter of a PR‑23 refractometer system.

  • Page 260: Appendix B: Principle Of Measurement

    IM-EN-PR23-E Appendix B. Principle of measurement The Vaisala K‑PATENTSâ in‑line refractometer determines the refractive index n of the process solution. It measures the critical angle of refraction using a yellow LED light source with the same wavelength (589 nm) as the sodium D line (hence n ).

  • Page 261: Figure 142 Optical Images

    Appendix B – Principle of measurement The refractive index n changes with the process solution concentration and temperature. For most solutions the refractive index increases when the concentration increases. At higher temperatures the refractive index is smaller than at lower temperatures. From this follows that the optical image changes with the process solution concentration as shown in the figure below.

  • Page 262: Appendix C: Pr-23 Sensor Verification Form

    PR-23 Series User Guide IM-EN-PR23-E Appendix C. PR-23 sensor verification form Fill in this form and email it to helpdesk@vaisala.com or to your local service representative. Sensor serial no: Customer: Address: Email: Date: Verification made by: Table 63 Verification results display Sample...

  • Page 263: Appendix D: Field Calibration Form

    Appendix D – Field calibration form Appendix D. Field calibration form Fill in this form and email it to helpdesk@vaisala.com or to your local service representative. Refractometer serial no: Refractometer model: Customer: Address: Email: Sample description: Solvent (water/other): Laboratory method: Date:...

  • Page 264: Appendix E: Dtr Command Selection Tree

    PR-23 Series User Guide IM-EN-PR23-E Appendix E. DTR command selection tree SENSOR A/B MAIN MENU VERIFICATION SYSTEM mA OUTPUTS RELAYS DESCRIPTION SWITCHES PRISM WASH CHEMICAL CURVE PARAMETERS FIELD CALIBRATION NETWORK SENSOR nD CALIBRATION FIELD SAMPLE SENSOR RESTART SENSOR STATUS SLOPE WASH...

  • Page 265: Appendix F: Str/Divert Mode Command Selection Tree

    Appendix F – STR/Divert mode command selection tree Appendix F. STR/Divert mode command selection tree MENU VERIFICATION SYSTEM mA OUTPUTS RELAYS DESCRIPTION SWITCHES PRISM WASH CHEMICAL CURVE PARAMETERS FIELD CALIBRATION NETWORK SENSOR nD CALIBRATION FIELD SAMPLE SENSOR RESTART SENSOR STATUS SLOPE WASH WASH MAIN DISPLAY FORMAT...
  • Page 266 PR-23 Series User Guide IM-EN-PR23-E...

  • Page 267: Index

    Index Index functions................52 Symbols 24V DC power..............33 3‑A sanitary standard..........112, 121 hardware................85 hold during wash..............63 hold functions..............65 AC power................33 homepage................234 annual maintenance............84 humidity................. 58, 84 barriers.................168 IDS...................55 blank display................88 indicating transmitter..........13, 222 Indicating transmitter............51 Indicating transmitter DTR..........21 calibration...............
  • Page 268 PR-23 Series User Guide IM-EN-PR23-E sensor................15, 99 sensor compatibility............99 packaging................15 sensors..................13 parameters................82 sensor status................55 parts list................107 sensor verification certificate........236 password................13 serial number..............222 patents..................12 setup..................53 pipe..................20 signal damping..............59 pipe mounting..............20 slew rate limit............... 61 power terminals..............

  • Page 269: Warranty

    Conditions of Sale for details of the warranty for each product. Technical support Contact Vaisala technical support at helpdesk@vaisala.com. Provide at least the following supporting information as applicable: • Product name, model, and serial number •...
  • Page 272 www.vaisala.com...

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