Vaisala K‑PATENTS PR-43 Series User Manual
  1. Manuals
  2. Brands
  3. Vaisala Manuals
  4. Measuring Instruments
  5. K-PATENTS PR-43
  6. User manual

Vaisala K‑PATENTS PR-43 Series User Manual

Process refractometer
Hide thumbs Also See for K‑PATENTS PR-43 Series:
Table of Contents

Advertisement

Quick Links

Download this manual
M212455EN-B
User Guide
Process Refractometer
PR-43 Series

Advertisement

Table of Contents
loading

Related Manuals for Vaisala K‑PATENTS PR-43 Series

Summary of Contents for Vaisala K‑PATENTS PR-43 Series

  • Page 1 M212455EN-B User Guide Process Refractometer PR-43 Series...
  • Page 2 This product contains software developed disclosed to a third party without prior by Vaisala or third parties. Use of the written permission of the copyright holder. software is governed by license terms and Translated documents and translated...

  • Page 3: Table Of Contents

    Table of contents Table of contents About this document..................5 Version information..................5 Related manuals....................5 Documentation conventions................5 Trademarks......................6 Product overview.................... 7 Safety........................7 Refractometer connections................ 8 Power supply..................... 8 mA output......................8 Cable connections.....................8 3.3.1 Split cable connections................9 Ethernet connection..................10 3.4.1 IP settings for PR-43................
  • Page 4 PR-43 Series User Guide M212455EN-B Troubleshooting.................... 32 Diagnostic message priorities...............32 Hardware......................32 Measurement....................33 Principle of measurement................. 35 Ethernet protocol specification.............. 37 Communication protocol................37 9.1.1 Request format..................37 9.1.2 Response format..................37 9.1.3 Request and response errors..............38 Request-response pair specification............38 Error message specification.................
  • Page 5 List of figures List of figures Figure Analogue connection..................8 Figure 2 mA and Ethernet output (with M12 ethernet connector)...... 9 Figure 3 mA and Ethernet output (with RJ-45 ethernet connector)....9 Figure 4 RJ45 network connection with Ethernet converter cable PR-8442......................
  • Page 6 PR-43 Series User Guide M212455EN-B List of tables Table 1 Document versions (English)................5 Table 2 PR-43 manuals......................5 Table 3 Hardware messages....................32 Table 4 Measurement messages..................33 Table 5 Request-response pair specification..............39...

  • Page 7: About This Document

    This document provides instructions for installing and using the Vaisala K‑PATENTS® Process Refractometers in the PR‑43 series. This product manual is delivered to the end user with a Vaisala K‑PATENTS® product. Information in this manual is subject to change without notice. When the manual is changed, a revised copy is published at www.kpatents.com.

  • Page 8: Trademarks

    Indicates that you need to take some notes during the task. 1.4 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 9: Product Overview

    Chapter 2 – Product overview 2. Product overview The Vaisala K-PATENTS® in-line process 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. See...

  • Page 10: Refractometer Connections

    PR-43 Series User Guide M212455EN-B 3. Refractometer connections The refractometer has an Ethernet connection for digital data acquisition and configuration. The standard connection cable is made with an 8-pin industrial M12 connector in the refractometer end. For more information on the cables, see the manual for your refractometer model.

  • Page 11: Split Cable Connections

    Chapter 3 – Refractometer connections PR-43 REFRACTOMETER M-12-8 pin, A-code, M PR-8431 non-Ex Split cable M12 M12-8 pin, A-code, F Ethernet (M12-4 pin, D-code,M) mA, 24V 10m (33ft) 10m (33ft) PR-43 REFRACTOMETER PR-8431 M-12-8 pin, A-code, M Split cable M12 non-Ex M12-8 pin, A-code, F Ethernet (M12-4 pin, D-code,M)

  • Page 12: Ethernet Connection

    PR-43 Series User Guide M212455EN-B • White: +24 DC • Brown: GND The mA output cable includes the following color-coded internal cabling: • White: mA+ • Brown: mA- 3.4 Ethernet connection The Ethernet connection enables data download from a refractometer to a computer. Any type of computer, for example PC, Mac or mainframe, with a compatible network connection can be configured to view and download data from the refractometer.

  • Page 13: Figure 5 Three Refractometers In The Same Network

    Chapter 3 – Refractometer connections Hub/Switch Ethernet Ethernet cable 24 V 24 V 24 V Figure 5 Three refractometers in the same network It is possible to use a WLAN access point to decrease the number of cables. Access point Ethernet WLAN 24 V Figure 6 Connecting refractometer(s) via wireless...

  • Page 14: Ip Settings For Pr-43

    PR-43 Series User Guide M212455EN-B 3.4.1 IP settings for PR-43 All PR-43 refractometers are shipped with the factory default IP address of 169.254.43.43. This address belongs to the Zeroconf addresses (as defined in IETF standard RFC 3927) so that it can easily be reached from a stand-alone computer, usually without changing the network settings of the computer.

  • Page 15: Configuring Refractometer Network

    Chapter 3 – Refractometer connections Figure 8 Typical IP configuration for stand-alone laptop connected to refractometer (laptop WLAN turned off) 3.4.3 Configuring refractometer network If there are is than one refractometer in a network, their IP addresses have to be configured manually as the factory default does not work. If the refractometer is to be connected to a factory network, consult the network administrator for the correct settings.

  • Page 16: Testing Ethernet Connection

    PR-43 Series User Guide M212455EN-B 3.4.4 Testing Ethernet connection When the refractometer is connected to a switch, the corresponding link light illuminates in the switch. Once the refractometer is powered up, it should be reachable from any correctly configured computer. Typing the IP address of the refractometer to the address bar of a web browser brings up the refractometer homepage, see Web interface (page 16).

  • Page 17: Figure 10 Pinging Address 169.254.43.43; Ping Returned Fully And Connection Ok

    Chapter 3 – Refractometer connections Figure 10 Pinging address 169.254.43.43; ping returned fully and connection OK...

  • Page 18: Web Interface

    PR-43 Series User Guide M212455EN-B 4. Web interface Every PR-43 refractometer has a built-in web server with a homepage. The refractometer homepage allows you to configure, monitor, verify and diagnose the refractometer. Once a refractometer is connected, the homepage is accessed by simply entering the refractometer’s IP address into the address bar of the computer’s web browser.

  • Page 19: Diagnostics

    Chapter 4 – Web interface Figure 11 Main page The main page shows the measurement values, serial number and the tag for the refractometer. The small numeric display in the bottom right of the page indicates the number of measurement cycles (one per second) since the last login to the refractometer. Figure 12 Measurement cycles since last login 4.2 Diagnostics The Diagnostics page displays the diagnostic values produced by the refractometer.

  • Page 20: Diagnostic Values

    PR-43 Series User Guide M212455EN-B Figure 13 Diagnostics page 4.2.1 Diagnostic values The diagnostic values provide additional information about the measurement. • CALC is the calculated concentration value without the field calibration adjustment. • QF or Quality Factor is a value in the range 0 ‑ 200. The QF value depends on process medium optical properties.

  • Page 21: Measuring Field Samples

    Chapter 4 – Web interface Figure 14 Parameters page Most parameters are changed by deleting the old parameter and writing a new one in the field. Some, for example the temperature unit, are drop-down lists, click the little triangle on the right to see the list and to change the parameter.

  • Page 22: Optical Image

    PR-43 Series User Guide M212455EN-B A sample can be measured by clicking the Field point button on the page. After clicking the button, the refractometer measures the sample ten times and then shows the average and standard deviation of the measurements. Also the measurement status is shown, and if the status is not Normal operation, the point is not accepted.

  • Page 23: Verification

    Chapter 4 – Web interface Figure 16 Raw optical image of compact refractometer Figure 17 Raw optical image of probe refractometer 4.4 Verification Refractometer verification can be performed on this page. Follow the instructions on the verification page to perform instrument verification. For more information on the verification procedure, see Instrument verification (page 42).

  • Page 24: Figure 18 Verification Page

    PR-43 Series User Guide M212455EN-B Figure 18 Verification page...

  • Page 25: Startup

    Chapter 5 – Startup 5. Startup 5.1 Startup 5.1.1 Initial check Connect the refractometer, and check that it powers up properly, see Testing Ethernet connection (page 14). Use a web browser to open the refractometer homepage and check that the serial number of the refractometer corresponds to that on the refractometer nameplate. Check the parameters on the Parameters page and adjust them as needed, see Parameters (page...

  • Page 26: Configuration And Calibration

    PR-43 Series User Guide M212455EN-B 6. Configuration and calibration The following sections describe how to configure the refractometer and calibrate concentration measurement. 6.1 Configuring refractometer In PR-43, all parameter changes are made with a web browser through the Parameters page, Parameters (page 18).

  • Page 27: Figure 19 Exponential Damping

    Chapter 6 – Configuration and calibration 10 s 20 s Time [s] Figure 19 Exponential damping 15 s 30 s Time [s] Figure 20 Linear damping The following figure shows the effect of slew rate on measurement.

  • Page 28: Configuring Ma Output

    PR-43 Series User Guide M212455EN-B Figure 21 Slew rate damping 6.1.2 Configuring mA output The mA output values are set on the Parameters page (see section 3.3). Minimum and maximum values set the measurement range. If your measurement unit is CONC% and you want to measure the range 15–25 CONC%, the output signal for minimum 15 will be 4 mA and for maximum 25 it’ll be 20 mA.

  • Page 29: Ethernet Speed Setting

    Chapter 6 – Configuration and calibration Measurement Data failure failure 20.5 Figure 22 Default mA output values The refractometer sends default mA if the message is NO OPTICAL IMAGE, TEMP MEASUREMENT FAULT, OUTSIDE LIGHT ERROR, NO SAMPLE or PRISM COATED. An optional secondary mA output default can be set for NO SAMPLE state to differentiate it from the other messages that cause the measurement to revert to default mA.

  • Page 30: Skip Count

    PR-43 Series User Guide M212455EN-B Figure 24 Choosing ethernet speed 6.1.4 Skip count When the sample is removed, the refractometer goes to NO SAMPLE state. However, if skip count is greater than 0, the CONC is frozen to its last value for the number of measurement cycles (one per second) indicated by skip count.

  • Page 31: Calibrating Concentration Measurement

    Chapter 6 – Configuration and calibration 6.2 Calibrating concentration measurement CCD-camera Pt-1000 LAYER 1 Refractometer nD calibration A parameters TEMP LAYER 2 Chemical curve C parameters CALC TEMP LAYER 3 Field calibration F parameters mA Output CONC Figure 26 Concentration calibration layers The concentration calibration is organized in 3 layers: •...

  • Page 32: Chemical Curve

    16 parameters. 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.
  • Page 33 Chapter 6 – Configuration and calibration • The sampling valve and the refractometer should be installed close to each other in the process WARNING! Wear protective clothing appropriate to your process when operating the sampling valve and handling the sample. •...

  • Page 34: Troubleshooting

    The following table describes the hardware messages and their related actions. Table 3 Hardware messages Message Description Corrective action HIGH INTERNAL Tells that humidity measured inside Contact Vaisala. HUMIDITY the refractometer exceeds 60 % relative humidity. The reason may be moisture leaking in through prism seal or the cover being open.

  • Page 35: Measurement

    If the value is above 100, contact Vaisala. There are negative spikes in the Contact Vaisala. optical image. The probable cause is contamination on the optical path. The CCD card in the refractometer is faulty.
  • Page 36 In some cases this message may also be caused by coating on the prism. TEMP Indicates faulty temperature element. Contact Vaisala. MEASUREMENT FAULT A difference to some other process temperature measurement is not a fault.

  • Page 37: Principle Of Measurement

    Chapter 8 – Principle of measurement 8. Principle of measurement The Vaisala K-PATENTS® inline 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 38: Figure 28 Optical Images

    PR-43 Series User Guide M212455EN-B 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 39: Ethernet Protocol Specification

    For this data acquisition, you’ll need to have suitable software on your computer. You can program a data acquisition program yourself following the specifications below. For examples and ready-made applications, contact Vaisala. 9.1 Communication protocol The communications protocol is based on UDP/IP to port 50023. It is a client/server protocol, where the refractometer is the server and thus only sends information when the client (your computer) requests it.

  • Page 40: Request And Response Errors

    PR-43 Series User Guide M212455EN-B • Packet number (32-bit integer) • Zero or more lines of ASCII (text) keys and values associated with these keys (for example temperature key and process temperature in Celsius) The packet number is echoed back without change. The client (software on computer) can use the packet number to check the response against the packet number of the request.

  • Page 41: Table 5 Request-Response Pair Specification

    Chapter 9 – Ethernet protocol specification Table 5 Request-response pair specification Specification Description Request ID Request data Response key NULL Included in query messages 0x0000000 (none) • IP: IP address message for debugging purposes as it • MAC: Ethernet can be used to check MACaddress whether the server is listening.

  • Page 42: Error Message Specification

    PR-43 Series User Guide M212455EN-B Specification Description Request ID Request data Response key Measurement Gives the measured and 0x0000000 0x0000000 • Status : string, results calculated measurement 0: always refractometer values from the zero status message refractometer. • LED : float, LED value •...
  • Page 43 • ErrorMsg : string, error details There may also be error-dependent extra keys. Other error codes may be returned. 0x00000003is to be handled as unknown request. Codes with higher numbers refer to internal errors; contact Vaisala for more information on these.

  • Page 44: Instrument Verification

    ±0.0002, then the representative level is the sum of the two accuracy specifications, that is ±0.0004. Vaisala provides a set of standard R.I. liquids, PR-2300, containing five selected liquids (1.3300, 1.3700, 1.4200, 1.4700, 1.5200). The set can be ordered from Vaisala. Other liquids are available on request.

  • Page 45: Handling R.i. Liquids

    Verification page. The temperature should be constant. The sample holder keeps the sample on the prism surface and also blocks the ambient light from reaching the prism. The universal sample holder PR-1012 can be used with any Vaisala K- PATENTS refractometer.

  • Page 46: Figure 30 Universal Sample Holder Pr-1012

    PR-43 Series User Guide M212455EN-B Figure 30 Universal sample holder PR-1012 The optical image displayed on the page helps determining whether the prism is wetted completely. The image should have a sharp corner as in Figure 18 (page 22). The position of the corner depends on the refractive index A soft image may indicate improper cleaning of the prism.

  • Page 47: Corrective Action

    Also, inspect the prism surface, checking that it is flat and shiny without any scratches, digs or deposition on it. Repeat the verification procedure. If the verification still fails, print out (or photograph) the verification report. Send the data to helpdesk@vaisala.com or your nearest Vaisala K-PATENTS representative and wait for further instructions.

  • Page 48: Appendix A: Pr-43 Refractometer Field Calibration Form

    PR-43 Series User Guide M212455EN-B Appendix A. PR-43 refractometer 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:...

  • Page 49: Appendix B: Eu Declaration Of Conformity

    – 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 51: Warranty

    Please see the applicable supply contract or 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 54 www. v aisala.com...

Table of Contents