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K-Patents PR-21-S Instruction Manual

Process refractometer
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PROCESS
REFRACTOMETER
PR-21-S
INSTRUCTION
MANUAL
IM-EN-PR21 Rev. 1.07

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Summary of Contents for K-Patents PR-21-S

  • Page 1 PROCESS REFRACTOMETER PR-21-S INSTRUCTION MANUAL IM-EN-PR21 Rev. 1.07...
  • Page 2 PR-21-S instruction manual...
  • Page 3 Warranty does not cover normal wear and tear of the product over time, or any products that are handled, installed or used against manufacturer’s guidance. Please note that prior to shipping any products or items to K-Patents, a Request for Return Materials Authorization (RMA) must be filled in and submitted to K-Patents Order Handling department. The RMA form is available at http://www.kpatents.com/ in the Support section.

  • Page 5: Table Of Contents

    Table of contents Introduction ............1 Standard specifications .
  • Page 6 5.4.4 Sensor head humidity ........Sensor verification .
  • Page 7 PR-21-S part list ........
  • Page 8 PR-21-S sensor verification form ........

  • Page 9: Introduction

    1 Introduction 1 Introduction The K-Patents inline refractometer is an instrument for measuring liquid concentra- tion 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.
  • Page 10 PR-21-S instruction manual NFORMATION s Refractometer consists of three parts (Figure 2.10): the Sensor (A), the Interconnecting ndicating transmitter (C). For description of the intrinsically safe K-Patents Process apter 12. Figure 1.2 Sensor LPH, model PR-21-S Figure 1.3 Refractometer equipment PR-21-S uipment intrinsically safe equipment, see Figure 12.10.

  • Page 11: Standard Specifications

    Indicating transmitter weight: 4.5 kg (10 lbs) INTERCONNECTING CABLE: PR-8230 cable. A paired cable with shielded ground. Screwed connector PR-8031 to connect cable to sensor PR-21-S Interconnecting cable length: Standard 10 m (33 ft), max. 200 m (660 ft) OPTIONS:...

  • Page 12: Model Code

    PR-21-S instruction manual 1.1.1 Model code Model and description Model PR-21 = Sensor PR-21 Refractive Index range limits 50 = Low range, R.I. 1.320..1.460 57 = High range, R.I. 1.380..1.530 Process connection -L = Sandvik L-clamp, 88 mm -D = DIN-flange 2656, PN 25, DN 80...
  • Page 13 1 Introduction Model and description Model DTR = Indicating transmitter (connectivity for two sensors) STR = Indicating transmitter (connectivity for one -IA sensor) Cable connection -U = ½inch NPT-type conduit hubes -M = M20x1.5 metric cable glands Electrical classification -GP = General purpose Transmitter options (A) -DC = Power supply 24 V DC (A) Note standard power supply is 100-240 VAC 50/60 Hz...
  • Page 14 Figure 1.6 Model code of PR-21-S-...-IA K-PATENTS OY  Postal Address: P.O.Box 77, FI-01511 Vantaa, Finland  Street Address: Elannontie 5, FI-01510 Vantaa, Finland Tel.int.+358 207 291 570 Fax int.+358 207 291 577  info@kpatents.com  www.kpatents.com  Vat No. FI03035575...

  • Page 15: Principle Of Measurement

    The light from a light The K-Patents Process Refractometer determines the refractive index (R.I) of the process solution by source (L) (Figure 1.7) is directed against the interface between a prism (P) and the measuring the critical angle of refraction.

  • Page 16: General Safety Considerations

    K-Patents is rigorous in ensuring that all products manufactured and supplied by K-Patents shall be free of defects in material and workmanship. K-Patents agrees to ei- ther replace or repair free of charge any product found to be defective, or parts thereof when returned to the nearest authorized K-Patents repair facility within two (2) years of the product’s delivery date.

  • Page 17: Inline Refractometer Sensor

    In the K-Patents Process Refractometer Sensor (Figure 2.1) the measurement prism In the K-Patents Process Refractometer Sensor (Figure 2.40) the measurement prism (A) is flush mounted (A) is flush mounted in the oblique surface near the tip. The light source (B) is a light in the oblique surface near the tip.

  • Page 18: Mounting

    PR-21-S instruction manual 2.2 Mounting 2.2.1 Sensor location The sensor is delivered with mounting guides attached, Figure 2.3 and Figure 2.4. The sensor is designed for being installed directly in a process line. If the sensor is located out of doors, some basic protection against direct exposure to sunlight and rain should be provided.
  • Page 19 2 Inline refractometer sensor 2 Inline refractometer sensor 2.2.2 PR-23 mounting guide Figure 2.3 Mounting guide 1/2...
  • Page 20 PR-21-S instruction manual Figure 3.10 Mounting guide. Figure 2.4 Mounting guide 2/2 INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14 Effective: May 15, 2009...

  • Page 21: Mounting Examples

    For mounting drawing for desired pipe diameter and connection type, contact the rep- resentative of K-Patents or please visit at K-Patents website www.kpatents.com No special mounting parts are needed to mount K-Patents Process Refractometer. For all process pipe diameters just a standard piece of 88.9 x 3.6 steel pipe is used as adapter.
  • Page 22 PR-21-S instruction manual Figure 2.5 Sandvik STD, LPL and LPS...
  • Page 23 2 Inline refractometer sensor 63.50 63.50 STD: DIN, JIS and ANSI 150 lbs or 300 lbs LPL: DIN, JIS and ANSI 150 lbs or 300 lbs 63.50 LPS: DIN, JIS and ANSI 150 lbs or 300 lbs Figure 2.6 Flange STD, LPL and LPS...
  • Page 24 PR-21-S instruction manual Sheet 2/2 DN 80 PN 40 ANSI 150lbs 152.40 190.50 ANSI 300lbs JIS 80A 10k 168.10 209.50 General tolerances Drawing description ISO2768-fK Figure 2.7 DIN, JIS and ANSI 150lbs or 300lbs flanges PR-21-S-LPS Mass DIN, JIS and ANSI 150lbs or 300lbs flanges Drawn 16.08.2013 IA...

  • Page 25: Mounting

    2 Inline refractometer sensor 2.2.3 Mounting The sensor mounting procedure: (Figure 2.8) • The sensor is connected to the process line. • Identify the sensor by the serial number (a). • Check flow direction. If the fitting has a fixed flange, the bolt holes should allow proper flow alignment of probe.

  • Page 26: Check List For Pipe Mounting

    2.2.6 Check list for mounting in a tank, a vessel or a large pipe A probe sensor PR-21-S-...-STD can be inserted with a flange or clamp into tanks and vessels which either don’t have a scraper or where the mixer doesn’t touch the vessel wall.

  • Page 27: Indicating Transmitter Dtr

    3 Indicating transmitter DTR 3 Indicating transmitter DTR 3.1 Indicating transmitter description The Indicating transmitter DTR is a specialized computer designed to process data received from one or two sensors. The Indicating transmitter enclosure (Figure 3.1) contains a front panel with a backlit Liquid Crystal Display (LCD) and a keyboard. The front panel swings open to give access for connections and service.

  • Page 28: Mounting Indicating Transmitter

    -20–60 °C. Important: The DTR does not have a built-in power switch. The system is always powered on when connected to a power source. K-Patents recommends mounting an external power switch to control the DTR’s power supply, Figure 3.5.

  • Page 29: Connecting The Indicating Transmitter

    3 Indicating transmitter DTR 3.3.3 Connecting the Indicating transmitter All the electrical terminals of the Indicating transmitter are behind the Front panel. To access them, first open the enclosure cover. Then loosen the front panel screw (Figure 3.4) and swing open the Front panel. All terminals are now accessible. POWER INDICATOR LIGHT...
  • Page 30 PR-21-S instruction manual Figure 3.6 The Motherboard of the Indicating transmitter Description of the terminals on the H1 interface card PR-10701 and on the Transmit- ter motherboard PR-10600 (Figure 3.6): On H1 A 1 2 3 Connection for Sensor A, signal wires (1, 2), cable shield (3).

  • Page 31: Power Terminals

    3 Indicating transmitter DTR 3.3.4 Power terminals The primary AC power is connected to a separate terminal strip 31/32/33 marked in the lower right-hand corner of the Motherboard (Figure 3.6). The three ter- POWER minals are marked 31/L, 32/N and 33/PE (protective earth). The power terminal 33/PE is directly connected to the exposed metal parts of the Indicating transmitter DTR.
  • Page 32 PR-21-S instruction manual...

  • Page 33: Prism Wash Systems

    4 Prism wash systems 4 Prism wash systems Three alternatives of prism wash systems can be provided: • Steam wash with integral nozzle, Section 4.2 • High pressure water with integral nozzle, Section 4.3 • Steam and water wash for flow cell mounting, Section 4.4 In most of the applications the prism wash is not necessary.

  • Page 34: Prism Wash With Integral Steam Nozzle

    An integral steam nozzle can be easily fitted afterwards, if required. Figures 4.2 show recommended components for a prism wash system with integral steam nozzle. The components are provided by K-Patents. The steam line should be equipped with a check valve (Figure 4.2). If the process medium solidifies at ambi- ent temperature, the check valve should be insulated (Figure 2.4).
  • Page 35 Figure 4.1 Mounting of integral steam nozzles Figure 8.21 Mounting of integral steam nozzles with DIN, JIS, ANSI and Sandvik connections. with DIN, JIS, ANSI and Sandvik connections INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14 Effective: May 15, 2009...
  • Page 36 PR-21-S instruction manual Figure 4.2 Mounting summary of integral prism wash system Figure 4.3 Wiring of PR-21-S with DTR...

  • Page 37: Prism Wash With Integral High Pressure Water Nozzle

    3(3 phase) pumps with local voltages. Inlet water temperature should be warm, about 60 °C. K-Patents delivers high pressure pump with 8 meter rubber high pressure hose. Customer can also make high pressure line between pump and nozzle from stainless steel pipes which are suitable for pressures up to 150 bar.
  • Page 38 PR-21-S instruction manual Figure 4.4 Mounting drawing for integral high-pressure wash system...
  • Page 39 4 Prism wash systems Figure 4.5 Wiring drawing: High-pressure wash system for water...

  • Page 40: Prism Wash With Flow Through Cells

    PR-21-S instruction manual 4.4 Prism wash with flow through cells Figure 4.6 Prism wash with flow through cells...
  • Page 41 4 Prism wash systems Figure 8.41 Flow through cell nozzles. Figure 4.7 Flow through cell nozzles INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14 Effective: May 15, 2009...

  • Page 42: Recommended Wash Pressures And Times

    PR-21-S instruction manual 4.5 Recommended wash pressures and times To select a recommended wash pressure use the following table: Nozzle type Wash Wash time Min. above Max. above medium in seconds process pressure process pressure Integral nozzles -HPS steam 2 bar (30psi)

  • Page 43: Startup And Use

    5 Startup and use 5 Startup and use 5.1 Startup 5.1.1 Initial check 1. Check the wiring, Section 3.3, “Electrical connections”. 2. Connect the power. The Power indicator light (Figure 3.4) and the screen should light up within a few seconds. 3.

  • Page 44: Calibration Check

    PR-21-S instruction manual 7. The TEMP value should show the current process temperature. 8. The value and the correct setup of the two mA output signals can be checked by selecting in the Main menu and then in the Description menu...

  • Page 45: Keyboard Functions

    5 Startup and use 5.2.1 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 46 PR-21-S instruction manual Figure 5.3 Display setup menu Main display format: As you can see in Figure 5.1, there are four different Main dis- play formats: the dual sensor format shows information on both sensors while the three different single sensor formats show selected information on one sensor at a time.

  • Page 47: Viewing System Information

    5 Startup and use 5.3 Viewing system information selection from the Main menu (Figure 5.2) opens a path to complete DESCRIPTION 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, CALIBRATION must be selected from the main menu.
  • Page 48 PR-21-S instruction manual Empty pipe Normal conditions Figure 5.6 Typical optical images Figure 5.7 A slope graph – is the final concentration value including Field calibration adjustment, see CONC Figure 6.12. – , see Section 5.4.3. TEMP – gives the position of the shadow edge on CCD in %.

  • Page 49: Temperature Measurement

    5 Startup and use 5.4.3 Temperature measurement The system contains three different temperature measurements displayed to the left of the graphs in Figure 5.6: is the process temperature used for automatic temperature compensation in the TEMP Indicating transmitter (Section 6.6, “Calibrating the concentration measurement”). measures the temperature on the Sensor processor card PR-10100 (Fig- HD TMP ure 10.2).
  • Page 50 PR-21-S instruction manual...

  • Page 51: Configuration And Calibration

    (see upper edge of the display to check which sensor is currently chosen and switch in the Outputs display if necessary). The PR-21-S offers three types of signal damping. The damping parameter is set sep- arately through the Outputs menu selected from the Calibration menu by 2 OUTPUTS What the damping time means in practice, depends on the damping type.

  • Page 52: Linear Damping

    PR-21-S instruction manual 6.1.2 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. After a step change the signal rises linearly and reaches the final value after the damping time.

  • Page 53: Configuring Output Signal Hold Functionality

    6 Configuration and calibration Note: Avoid overdamping, the signal should not be made insensitive. 6.2 Configuring output signal hold functionality The instrument can be configured to temporarily hold its measurement result in three different cases. 1. By using an external hold switch (see Section 6.4) 2.

  • Page 54: Qf Threshold

    PR-21-S instruction manual The tolerance time counter is reset always when there is a representative sample on the prism (e.g., the n can be determined). Figure 6.4 illustrates this behaviour with an intermittent measurement signal. When the signal drop is shorter than the tolerance time (e.g.

  • Page 55: Hold And Signal Damping

    Figure 6.5 Damping stops during hold 6.2.7 Hold functions with DD-23 The K-Patents Digital Divert Control System DD-23 uses the displayed concentration value in its decision logic. Due to this, the external hold functionality must not be used with a DD-23, as it could potentially render the system unsafe by freezing the measurement result.
  • Page 56 PR-21-S instruction manual be assigned to a sensor. Relays can also be opened and closed manually, mainly to test them. To configure the relays, follow the instructions below: 1. Select from the Main menu. 5 CALIBRATION 2. Select from the Calibration menu.
  • Page 57 6 Configuration and calibration 5. In the relay menu, select to set the relay function: 2 FUNCTION 1 FUNCTION NOT DEFINED Factory setting. 2 FUNCTION NORMAL OPERATION Closed contact if diagnostic message is NOR- during (see Section 6.4). MAL OPERATION HOLD The contact is also closed when message NO SAMPLE...

  • Page 58: Configuring Input Switches

    PR-21-S instruction manual Figure 6.7 The manual set display for relays 6.4 Configuring input switches For the electrical properties of the four input switches, see Section 3.3. To see which switches are closed, check the Description menu, see Section 5.3. To configure the switches, follow the instructions below: 1.
  • Page 59 6 Configuration and calibration Figure 6.9 Arrival to Switch 1’s sensor selection menu, sensor A selected 6. In the Switch menu, select to set switch function. 2 FUNCTION Note: The current assignment of the switch is shown at the bottom of the Switch menu display, e.g.

  • Page 60: Configuring Refractometer System

    PR-21-S instruction manual 6.5 Configuring refractometer system The Indicating transmitter has two built-in 4–20 mA outputs ( mA OUTPUT 1, mA OUTPUT 2 two relay contact outputs ( ), and four switch inputs ( RELAY 1, RELAY 2 SWITCH 1, ).
  • Page 61 6 Configuration and calibration Note: NAMUR is an international association of users of automation in process in- dustries. The association recommendation NE 43 promotes a standardization of the signal level for failure information. The goal of NE 43 is to set a basis for proactively using transmitter failure signals in process control strategies.

  • Page 62: Calibrating The Concentration Measurement

    TEMP in Centigrade. Hence, the calibrations of all PR-21-S sensors are identical, which makes sensors interchangeable. Furthermore, the calibration of each sen- sor can be verified using standard refractive index liquids, see Chapter 12.

  • Page 63: The Chemical Curve

    Record the calibrating data on the PR-21-S field calibration form (found in the end of this manual), also available at <http://www.kpatents.com/> and by emailing a request to <info@kpatents.com>.
  • Page 64 PR-21-S instruction manual Sample concentration determined by the user LAB% From DTR display: (see Figure 6.13) Calculated concentration value CALC Process temperature measurement in Centigrade Actual refractive index n Measurement in concentration units, the large size number CONC In addition to the calibration data, write down the Indicating transmitter serial num- ber, the sensor serial number and the sensor position, i.e.

  • Page 65: Entering Field Calibration Parameters

    6 Configuration and calibration 6.6.4 Entering field calibration parameters The field calibration parameters supplied by K-Patents are entered by selecting 5 CALI- from the Main menu, followed by first and then by BRATION 1 CHEMICAL & FIELD PARAMETERS FIELD CALIBRATION PARAMETERS Important: If there is already a previous field calibration, it should be cleared (by setting all values to 0) before entering a new field calibration.
  • Page 66 PR-21-S instruction manual Note: 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 67 6 Configuration and calibration NOTES 1. Remote wash is triggered at The other the closing of the switch. If sensor the switch is held closed, washing? only one wash cycle is carried out. 2. The wash is inhibited if there is no sample, no sensor or the sensor cannot MANUAL measure correctly.
  • Page 68 PR-21-S instruction manual 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 6.16 Wash cycle...

  • Page 69: Setting Prism Wash Parameters

    6 Configuration and calibration 6.7.2 Setting prism wash parameters To set the prism wash parameters for a given sensor, first select the sensor, then se- lect from the Main menu, and then . This menu contains the 5 CALIBRATION 4 PRISM WASH alternatives (factory settings are given in parentheses): 1 PRECONDITION TIME 0–30 s (0 s)
  • Page 70 The standard span in Figure 5.60 is based on an objective lens focal length f=18. A wider span multiplied by 1.8 (f=10) is available, with an accuracy of + 0.0003 R.I. INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14...

  • Page 71: Sensor Rangeability

    6 Configuration and calibration 6.7.4 Sensor rangeability The Sensor is made in two versions: Probe tip angle is either 50 degrees or 57 degrees. The value is stamped on the probe tip. The rangeability of the two sensor versions is described in (Figure 6.18). The shaded area shows the span for a typical mechanical zero setting.
  • Page 72 PR-21-S instruction manual...

  • Page 73: Regular Maintenance

    – If your refractometer has prism wash, check that it works, see Section 5.1.3. 7.1 Checking the sensor humidity level The PR-21-S sensor head has an internal humidity detector. The humidity reading can be checked on the Indicating transmitter display, select...
  • Page 74 PR-21-S instruction manual Image detector module Remove Screw A, Figure 7.1. Then the holder can be re- moved. Gently pull the module out. Be careful not to pull the CCD card. Pull from the back of the module body. At assembly note the aligning pin. Do not touch the screw G, because it fixes the CCD card with the CCD element for receiving optical im- age correctly from the optics inside of the module.

  • Page 75: Removing Electronic Cards Pr-10301 And Pr-10201

    The red light should be seen reflected from the mirror at the tip of the module. This light should focus at a 10 mm distance from module. Figure 7.3 Ribbon cable connector INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14 Effective: May 15, 2009...
  • Page 76 PR-21-S instruction manual...

  • Page 77: Troubleshooting

    8 Troubleshooting 8 Troubleshooting 8.1 Hardware 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. Power indicator light Transmitter processor card...

  • Page 78: Blank Display

    PR-21-S instruction manual 8.1.1 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 79 8 Troubleshooting Important safety considerations +24 V Always switch off the mains before Power supply OK disconnecting or reconnecting cables, modules, etc. Beware of the high voltage terminals 34 and 35 Mains Have it fixed Measuring instructions Use a DMM (Digital Multimeter) to measure the voltage Measure the +24 V from terminals Disconnect +24 V from...

  • Page 80: Diagnostic Leds

    PR-21-S instruction manual 8.1.2 Diagnostic LEDs Figure 8.1 and Figure 8.2 assist to localize the diagnostic LEDs. Status Indication Front panel green LED DTR power is on; 8.1.1 Processor card PR-10500 is active. Transmitter processor card PR-10500 2 yellow LEDs blinking Processor card ok.
  • Page 81 8 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 8.5 Diagnostic LED functions For the display reset, you will need to access the DTR keyboard directly. Then do the following: 1.

  • Page 82: Message No Sensor

    PR-21-S instruction manual 8.1.4 Message NO SENSOR Cause: The current in the cable to this sensor is below 20 mA. Normally this means that there’s no sensor connected to the cable or that there’s no cable to the DTR. If this message comes up while a sensor properly is connected, the most likely cause of this message is a fault in the sensor.

  • Page 83: Message High Sensor Humidity

    8 Troubleshooting 8.1.7 Message HIGH SENSOR HUMIDITY Tells that humidity measured at the Sensor processor card exceeds 60 % relative hu- midity. The reason may be moisture leaking in through prism seal or the cover being open. Also, check and, if necessary, replace prism seal, Section 7.3.2 “Removing elec- tronic cards PR-10301 and PR-10201”.

  • Page 84: Measurement

    PR-21-S instruction manual 8.2 Measurement 8.2.1 Message OUTSIDE LIGHT ERROR Cause: The measurement is not possible because too much outside light reaches the camera. Action: Identify the light source (for example sun shining into an open tank or a translucent pipe) and block the light from getting to the prism at the sensor tip.

  • Page 85: Message Outside Light To Prism

    Note: The prism gasket must be replaced, too. Note: A difference to some other process temperature measurement is not a fault. PR-21-S measures the true temperature of the prism surface. 8.2.8 Concentration drift during NORMAL OPERATION For drift upward, suspect prism coating, Section 4.1, “Prism coating”. Otherwise check calibration (Section 6.6, “Calibrating the concentration measurement”) and sensor...

  • Page 86: Wash

    PR-21-S instruction manual 8.3 Wash 8.3.1 Message EXTERNAL HOLD The concentration measurement is on HOLD due to an external switch closure. For explanation, see Section 6.4, “Configuring input switches”. 8.3.2 Messages PRECONDITIONING WASH RECOVERING – : An optional preconditioning relay is closed, see Section 6.7 “Con- PRECONDITIONING figuring prism wash”.

  • Page 87: Diagnostic Messages Table

    8 Troubleshooting 8.4 Diagnostic messages table Important: The messages are listed in descending order of priority. Example: If both are activated, only will NO OPTICAL IMAGE TEMP MEASUREMENT FAULT NO OPTICAL IMAGE be shown. The wash related messages have priority only during the wash cycle (preconditioning–wash–recovery).
  • Page 88 PR-21-S instruction manual...

  • Page 89: Indicating Transmitter Dtr Specifications

    9.1 Compatibility The Indicating transmitter DTR is only compatible with the PR-21-S refractometer range. Any one or two PR-21-S refractometer sensors can be connected to the DTR. PR- 01 and PR-03 refractometer sensors are not compatible with an Indicating transmitter DTR.

  • Page 90: Transmitter Program Versions

    9.1.1 Transmitter program versions The DTR program version can be updated over the Ethernet connection (see Chap- ter 11) with K-Patents software. Contact your nearest K-Patents representative for more information on how to update your DTR program version. Note. The PR-21 sensor is only compatible with transmitter program version 4.07 or newer.

  • Page 91: Transmitter Parts List

    9 Indicating transmitter DTR specifications 9.3 Transmitter parts list Figure 9.3 Indicating transmitter DTR (STR) parts...
  • Page 92 PR-21-S instruction manual...

  • Page 93: Specifications

    Sensor connectivity, STR: Only one sensor can be connected to the transmitter. Used with the Intrinsically safe sensor PR-21-S-...-IA. Transmitter protection class: Enclosure IP66, Nema 4X Installation: Indoor/outdoor, relative humidity 80% max Indicating transmitter weight: 4.5 kg (10 lbs)
  • Page 94 PR-21-S instruction manual...

  • Page 95: Sensor Types

    10 Sensor types 10 Sensor types 10.1 PR-21-S part list Figure 10.1 Parts...

  • Page 96: Sensor Pr-21-S

    PR-21-S instruction manual 10.2 Sensor PR-21-S Figure 10.2 Sensor...
  • Page 97 10 Sensor types...

  • Page 98: Pr-21-S Process Refractometers In Potentially Explosive Atmosphere

    PR-21-...-FM is T6 (T = 45 °C). 10.3.1 Equipment The K-Patents refractometer system (Figure 10.3) for potentially explosive atmos- phere locations consists of a modified refractometer sensor PR-21-...-FM, a standard Indicating transmitter DTR, a sensor connector PR-8021-FM and a sensor cable PR- 8230-...

  • Page 99: Intrinsically Safe Refractometers Pr-21

    10 Sensor types The FM certified sensors PR-21-S-...-FM are identified by the sensor nameplate. The Indicating transmitter is a standard DTR. Figure 10.4 FM nameplate 10.4 Intrinsically safe refractometers PR-21-...-IA Hazardous locations are places where a possibility of fire or explosion exists because of flammable gases, vapors or fine dust.
  • Page 100 The equipment is intrinsically safe only if all mounting instructions in Section 10.4.2 are followed. If the instrument has been in any way damaged during transportation, return it to your nearest K-Patents service point for checkup before installation. Never install a damaged instrument into the process line.

  • Page 101: Intrisincally Safe Mounting

    If any of the system parts is affected by a sudden impact, power it off immediately and have it checked by trained K-Patents service personnel before it is used again. The electrical connections for PR-21-S-...-IA are described in Figure 10.9.
  • Page 102 PR-21-S instruction manual Figure 10.9 Intrinsically safe wiring, PR-21-S-...-IA...

  • Page 103: Isolator/Barriers

    10 Sensor types Cables: – 10 m (33 ft) cable, part number PR-8230-010, connecting the Indicating transmit- ter STR and the Isolator unit. The maximum cable length is 100 m (330 ft). – 10 m (33 ft) power cable, part number PR-8250-010, connecting the Indicating transmitter STR and the Isolator unit, part number PR-8250-010.
  • Page 104 PR-21-S instruction manual...

  • Page 105: Ethernet Connection Specification

    11 Ethernet connection specification 11 Ethernet connection specification The Ethernet connection enables data download from a DTR to a computer. The con- nection works both directly between DTR and computer or via a hub or switch, local area network (LAN), wireless network (WLAN) or fiber Ethernet. Any type of computer (PC, Mac, PDA, mainframe...) with a compatible network con- nection can be configured to download data from the DTR.

  • Page 106: Connecting The Ethernet Cable

    PR-21-S instruction manual POWER POWER Hub/Switch PROCESS INSTRUMENTS PROCESS INSTRUMENTS Check hub/switch manual for Ethernet cable type Figure 11.3 Connecting a DTR to a hub or a switch. POWER POWER Access point WLAN Check WLAN manual PROCESS INSTRUMENTS PROCESS INSTRUMENTS for Ethernet cable type Figure 11.4 Connecting DTR to WLAN.

  • Page 107: Connection Settings

    11 Ethernet connection specification Figure 11.6 Ethernet connector on the underside of the Front panel. 11.2 Connection settings 11.2.1 IP settings for DTR The DTR uses the IP protocol to communicate over the Ethernet. The factory setting for the DTR’s IP address is 192.168.23.254 (a private network address). Note: If you connect the DTR to an existing network, the address must be changed to fit the network before making the connection.

  • Page 108: Testing The Ethernet Connection

    PR-21-S instruction manual command prompt (press Enter to give the command), see figure 11.7 (in Mac OS X and Linux the same command is called ). The result will give you your computer’s ifconfig IP address, so you can change the DTR to match; the connection should always work if you match the first three groups of numbers and just change the last number.
  • Page 109 11 Ethernet connection specification Figure 11.8 Ping OK. Figure 11.9 Ping error message. First open the DTR cover and front panel and check the diagnostic LEDs of the Eth- ernet connector (see Section 11.1.2). Note: Keep both the DTR and your computer powered while you check the diagnostic LEDs.

  • Page 110: Instrument Homepage

    PR-21-S instruction manual temporarily while working with the DTR. Remember to turn on the firewall before connecting to a network again! 11.4 Instrument homepage From DTR program version 2.0 onwards every DTR has its own built-in instrument homepage that contains information about the instrument and a remote panel with full functionality.

  • Page 111: Remote Panel

    The main purpose of the Ethernet connection is to collect measurement data from the instrument. For this data acquisition, you’ll need to have suitable software on your computer. One solution is to get the software package from K-Patents. The package contains a ready-to-use data acquisition program for Windows 2000/XP/Vista.
  • Page 112 PR-21-S instruction manual – 32-bit integer: packet number – 32-bit integer: request ID – (any): request data (depends on the request) – (any): fill-in data Important: 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 113: Request-Response Pair Specification

    StatusMessage = "Normal Operation" Note: All the key identifiers (see Section 11.5.2 for additional information) are case- insensitive. However, K-Patents recommends that they are written as in this specifi- cation. The server (DTR) may send the response keys in any order. It will send the mandatory keys (marked with an asterisk in Section 11.5.2) of the specific request, but it may omit...
  • Page 114 PR-21-S instruction manual Protocol version The version query is responded with a value representing the server (DTR) protocol version. Request ID 0x00000001 Request data (none) Response key : integer, the server protocol version (currently 3) *Version DTR information The DTR information query gives the basic information of the DTR assembly.

  • Page 115: Error Message Specification

    : string, error details ErrorMsg There may also be error-dependent extra keys.Other error codes may be returned. is to be handled as unknown request. Codes with higher numbers refer 0x00000003 to internal errors; contact K-Patents for more information on these.
  • Page 116 PR-21-S instruction manual...

  • Page 117: Sensor Verification

    K-Patents verifies the calibration of all delivered instruments according to a proce- dure similar to the one described Section 12.1. K-Patents quality system is ISO 9001 certified by Det Norske Veritas.

  • Page 118: Handling The R.i. Liquids

    PR-21-S instruction manual The verification of the PR-21-S sensor calibration is made using a set of standard re- fractive index liquids with the nominal values at 25 °C: – 1.330 – 1.350 – 1.360 – 1.370 – 1.390 – 1.410 –...

  • Page 119: Sensor Verification Certificate

    12 Sensor verification Figure 12.2 Verification, pre-verificaton checks Figure 12.3 Verification display To check that the standard liquid is properly wetting the prism, it is possible to press soft key . The optical image should show like in Figure 12.4. For more infor- OPT.

  • Page 120: Corrective Action

    PR-21-S instruction manual Figure 12.4 Optical image Figure 12.5 Verification in process Important: When you have performed a verification on a sensor, reload/refresh the verification page to view the newest results. The date given on the verification page is the page load date, not necessarily the verification date.
  • Page 121 – Bad temperature control (changing temperature) If verification fails even on the repetition of the verification procedure, fill in the PR-21-S sensor verification form (available in Appendix B and send it to K-Patents or your nearest K-Patents representative or email the collected information to <info@kpatents.com>...
  • Page 122 K-Patents PR-23 Refractometer System: Sensor verification http://192.168.23.250/verif.shtml PR-21-S instruction manual PROCESS REFRACTOMETER PR-23 Sensor verification Page loaded on February 2, 2009 at 03:19:28 PM Sensor information Serial number: R05676 Test results Nominal nD Measurement Sensor at 25°C Measured Accuracy Result...
  • Page 123 12 Sensor verification Figure 12.10 Finding verification information for PR-21-S sensor verification form...
  • Page 124 PR-21-S instruction manual...

  • Page 125: Regulatory Compliance And Certifications

    13 Regulatory compliance and certifications 13 Regulatory compliance and certifications 13.1 EC Declaration of Conformity for PR-21 series of refractometers The following Declaration of Conformity confirms compliance with the applicable EU/EEA requirements and applies to all K-Patents PR-21 refractometer products:...

  • Page 126: Declaration Of Conformity For Pr-21

    PR-21-S instruction manual 13.2 Declaration of Conformity for PR-21-...-IA models (ATEX) The following Declaration of Conformity confirms compliance with the European ATEX requirements and applies to K-Patents PR-21-...-IA refractometer products:...

  • Page 127: A Index

    A Index DTR V1 40 ATEX 118 DTR V2 40 alarm relay see relay damping see signal damping ambient see temperature decimals see display automatic desiccant see dryer prism wash see prism wash diagnostic LEDs 72 temperature compensation see tem- functions 73 perature diagnostic message 35, 79...
  • Page 128 LOW TEMP WASH STOP 58, 78 HD HUM 40 LOW TRANSMITTER VOLT 75 HD TMP 40 LPL 7 HIGH SENSOR HUMIDITY 65, 75 LPS 7, 26 HIGH SENSOR TEMP 75 labels 7 HIGH TRANSMITTER TEMP 75 laboratory determinations 55 HPN 7, 29 language see display HPS 7, 26 light source see LED...
  • Page 129 output see mA output refractive index verification 109 refractive index liquids see certified PRECONDITIONING 78 standard refractive index liquids PRISM COATED 76 refractometer principle 7 PRISM WASH FAILURE 61, 78 relay PR-21 -FM 7, 90 alarm relay 49 PR-21 -GP 7 configuration 47 PR-21 -IA 7, 91 contact output 52...
  • Page 130 soft key 37 specifications 86 units see display standard refractive index liquids see certified standard refractive index liquids velocity see flow velocity standard specifications 7 verification see refractive index and startup 35 sensor switch see input switch and power WASH 78 TEMP MEASUREMENT FAULT 77 WASH CHECK 78 temperature...

  • Page 131: Bpr-21-S Sensor Verification Form

    B PR-21-S sensor verification form Fill in this form and fax or email it to K-Patents Oy or to your local service represen- tative. For contact information, please see <http://www.kpatents.com/>. Sensor serial no: Customer: Address: Fax: Email: Date: Verification made by:...

  • Page 133: Cpr-21-S Field Calibration Form

    C PR-21-S field calibration form Fill in this form and fax or email it to K-Patents Oy or to your local service represen- tative. For contact information, please see <http://www.kpatents.com/>. Sensor serial no: Customer: Address: Fax: Email: Sample description: Solvent (water/other):...

  • Page 135: Ddtr Command Selection Tree

    D 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 WASH DUAL SENSOR MAIN DISPLAY FORMAT SINGLE SENSOR: CONC DISPLAY BACKLIGHT &...

  • Page 137: Estr Command Selection Tree

    E STR 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 SINGLE SENSOR: CONC DISPLAY BACKLIGHT & CONTRAST SINGLE SENSOR: CONC+TEMP SINGLE SENS: CONC+BAR GRAPH DISPLAY SETUP...
  • Page 138 1804 Centre Point Circle, Suite 106 Naperville, IL 60653, USA tel. (630) 955 1545 fax (630) 955 1585 info@kpatents.com K-Patents (Shanghai) Co., Ltd Room 1509, Tomson Commercial Building, No. 710 Dongfang RD Pudong District, Shanghai, China tel. +86 21 5087 0597/0598 fax +86 21 5087 0598 www.kpatents.com...

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