Vaisala K-PATENTS PR-43 Instruction Manual
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Vaisala K-PATENTS PR-43 Instruction Manual

Vaisala K-PATENTS PR-43 Instruction Manual

Process refractometer
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IM-EN-PR43GEN v. 2.00
Instruction Manual
Vaisala K-PATENTS® Process Refractometer
PR-43

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Summary of Contents for Vaisala K-PATENTS PR-43

  • Page 1 IM-EN-PR43GEN v. 2.00 Instruction Manual Vaisala K-PATENTS® Process Refractometer PR-43...
  • Page 2 Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland P.O. Box 26, FI-00421 Helsinki, Finland +358 9 8949 1 Visit our Internet pages at www.vaisala.com. General safety considerations The process medium may be hot or otherwise hazardous. Use shields and protective clothing adequate for the process medium - do not rely on avoid- ance of contact with the process medium.
  • Page 3 Note. Notes contain additional information and hints. ® 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 http://www.vaisala.com/ Warranty For standard warranty terms and conditions, see www.vaisala.com/warranty.

  • Page 4: Table Of Contents

    Table of contents Introduction ........... 1 Refractometer connections .
  • Page 5 EU declaration of conformity ........43 © Copyright Vaisala 2019. All rights reserved.
  • Page 6 PR-43 instruction manual Document/Revision No. /2.00 Effective: September 2, 2019 IM-EN-PR43GEN...

  • Page 7: Introduction

    WI (See Compact user interface CI manual). Multichannel user interface provides high performance industrial computing e.g. for multiple connectivity and wash control (see Multichannel user interface MI manual). © Copyright Vaisala 2019. All rights reserved.

  • Page 8: Refractometer Connections

    fractometer only Cables PR-43 instruction manual PR-43 REFRACTOMETER M-12-8 pin, A-code, M PR-8431 non-Ex Split cable M12 M12-8 pin, A-code, F 2 Refractometer connections Ethernet (M12-4 pin, D-code,M) mA, 24V 10m (33ft) m (33ft) The refractometer has an Ethernet connection for digital data acquisition and configu- ration.
  • Page 9 2 Refractometer connections Figure 2.2 mA and Ethernet output (with M12 ethernet connector) © Copyright Vaisala 2019. All rights reserved.
  • Page 10 PR-43 instruction manual Figure 2.3 mA and Ethernet output (with RJ-45 ethernet connector) Document/Revision No. /2.00 Effective: September 2, 2019 IM-EN-PR43GEN...

  • Page 11: Ethernet Connection

    Figure 2.5 shows an example of how to connect three refractometers to an existing LAN with a switch. © Copyright Vaisala 2019. All rights reserved.
  • Page 12 PR-43 instruction manual Hub/Switch Ethernet Ethernet cable 24 V 24 V 24 V Figure 2.5 Three refractometers in the same network. It is possible to use a WLAN access point to decrease the number of cables (figure 2.6). Access point Ethernet WLAN 24 V...

  • Page 13: Ip Settings For The

    When the network settings of the refractometer (and/or the computer) have been con- figured according to the instructions above, the next step is to test the connection as instructed below in section 2.3.4. © Copyright Vaisala 2019. All rights reserved.

  • Page 14: Configuring A Network Of Refractometers

    PR-43 instruction manual Figure 2.8 Typical IP configuration for a stand-alone laptop when connected to a refractometer; laptop wireless (WLAN) is turned off 2.3.3 Configuring a network of refractometers In case there are more than one refractometer in a network, their IP addresses have to be configured manually as the factory default will not work.

  • Page 15: Testing The Ethernet Connection

    2. check that the computer has suitable network settings and that its WLAN connec- tion is turned off (section 2.3.2) 3. use the ping utility of the computer to try and reach the refractometer. © Copyright Vaisala 2019. All rights reserved.
  • Page 16 PR-43 instruction manual The ping utility mentioned above is available in Windows systems by using the Com- mand Prompt (usually found in the Accessories; or open Run, type in the empty line and press enter to open Command Prompt). The usage of ping is very simple: go to the command interface, type the name of the command and the IP address you want to check and press Enter.

  • Page 17: Web Interface

    5. Using the links in the link bar at the left side of the page you may access more extensive refractometer information. Important: The JavaScript support must be enabled in the browser, in order for the web pages to function as intended. © Copyright Vaisala 2019. All rights reserved.

  • Page 18: Main Page

    PR-43 instruction manual 3.1 Main page Once the refractometer homepage has loaded, it will display all the essential informa- tion regarding the refractometer. Figure 3.1 Main page The main page shows the measurement values, serial number and the tag for the re- fractometer.

  • Page 19: Diagnostics

    All the refractometer’s functional parameters can be changed using the Parameters page. The link to the Parameters page is located in the menu displayed on the right- hand side of the computer display. © Copyright Vaisala 2019. All rights reserved.
  • Page 20 PR-43 instruction manual Figure 3.4 Parameter page Most parameters are changed by deleting the old parameter and writing a new one in the field. Some, like e.g. temperature unit, are drop-down lists, click the little triangle on the right to see the list and to change the parameter. When you have changed a parameter, click the Submit changes button to apply the changes.

  • Page 21: Measuring Field Samples

    Normal operation, the point will not be accepted. Several points may be measured, and all the points are shown on the page until the page is reloaded. Figure 3.5 Measuring field samples © Copyright Vaisala 2019. All rights reserved.

  • Page 22: Optical Image

    PR-43 instruction manual 3.3.2 Optical image The raw optical image (figures 3.6 and 3.7) which contains all optical information can be seen by clicking on the Optical image link on the right side of the Diagnostics page. Figure 3.6 Raw optical image of a compact refractometer Figure 3.7 Raw optical image of a probe refractometer Document/Revision No.

  • Page 23: Verification

    The refractometer verification can be performed on this page (figure 3.8). Follow the instructions on the verification page to perform instrument verification. For more in- formation on the verification procedure, please see chapter 9. Figure 3.8 Verification page © Copyright Vaisala 2019. All rights reserved.

  • Page 24: Startup

    PR-43 instruction manual 4 Startup 4.1 Startup 4.1.1 Initial check Connect the refractometer, and check that it powers up properly (see section 2.3.4). 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 sec- tion 3.3).

  • Page 25: Configuration And Calibration

    Note: The factory setting for damping in PR-43 is 5 s linear. Avoid overdamping, the signal should not be made insensitive. © Copyright Vaisala 2019. All rights reserved.
  • Page 26 PR-43 instruction manual 10 s 20 s Time [s] Exponential damping 15 s 30 s Time [s] Linear damping Figure 5.1 Effect of damping time on measurement Document/Revision No. /2.00 Effective: September 2, 2019 IM-EN-PR43GEN...

  • Page 27: Configuring Ma Output

    ≥21 mA or ≤3.6 mA to indicate diagnostic failures (see figure 5.3). With that informa- tion, it is easier to detect a failure condition on a refractometer, for example, it clearly tells you whether you have an empty pipe or a failed instrument. © Copyright Vaisala 2019. All rights reserved.

  • Page 28: Ethernet Speed Setting

    PR-43 instruction manual Measurement Data failure failure 20.5 Figure 5.3 Default mA output values The refractometer sends default mA if the message is NO OPTICAL IMAGE, TEMP MEASURE- MENT FAULT, OUTSIDE LIGHT ERROR, NO SAMPLE PRISM COATED An optional secondary mA output default can be set for state to differentiate NO SAMPLE it from the other messages that cause the measurement to revert to default mA.

  • Page 29: Skip Count

    0, the CONC is frozen to its last value for the number of measurement cycles (one per second) indicated by skip count. Skip count is set in Output settings section of the parameter page. Figure 5.6 Setting the skipcount value © Copyright Vaisala 2019. All rights reserved.

  • Page 30: Calibrating The Concentration Measurement

    PR-43 instruction manual 5.2 Calibrating the 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 5.7 The layers of concentration calibration The concentration calibration is organized in 3 layers: the refractometer n calibration,...

  • Page 31: The Chemical Curve

    16 parameters. A chemical curve is specific to the given process medium, e.g. sucrose or sodium hy- droxide. The set of parameters is given by Vaisala and should not be altered, except in case of changing to another process medium.
  • Page 32 PR-43 instruction manual Each data point consists of: Sample concentration determined by the user LAB% 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 refractometer serial number. Accurate calibration is only achieved if the sample is taken correctly.

  • Page 33: Troubleshooting

    Cooling cover PR-14038. 6.2 Measurement 6.2.1 Message OUTSIDE LIGHT ERROR or OUTSIDE LIGHT TO PRISM Cause: The measurement is not possible or is disturbed because outside light reaches the camera. © Copyright Vaisala 2019. All rights reserved.

  • Page 34: Message No Optical Image

    5. There are negative spikes in the optical image. The probable cause is contamination on the optical path. Please contact Vaisala. 6. The CCD card in the refractometer is faulty. Please contact Vaisala. 6.2.3 Message PRISM COATED Cause: The optical surface of the prism is coated by the process medium or impurities in the process medium.

  • Page 35: Message No Sample

    6.2.6 Message TEMP MEASUREMENT FAULT Indicates faulty temperature element. Please contact Vaisala. Note: A difference to some other process temperature measurement is not a fault. The refractometer shows the true temperature of the prism surface.

  • Page 36: Principle Of Measurement

    PR-43 instruction manual 7 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 37 This value is used together with the measured process temperature to calculate the concentration. Figure 7.3 From image detection to concentration © Copyright Vaisala 2019. All rights reserved.

  • Page 38: 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 specifi- cations below. For examples and ready-made applications, please contact Vaisala. 8.1 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 (i.e.

  • Page 39: Response Format

    When the server (refractometer) detects an error, it responds with an error message (for more information see section 8.3). An error message can be caused for example by an unknown request or inability to collect data for the mandatory keys of a response. © Copyright Vaisala 2019. All rights reserved.

  • Page 40: Request-Response Pair Specification

    PR-43 instruction manual 8.2 Request-response pair specification The list below describes the query messages, i.e. request-response pairs, used for data collection via Ethernet. Those response keys that are always sent are preceded by an asterisk (*). 8.2.1 NULL message The null message is included in the query messages for debugging purposes as it can be used to check whether the server is listening.

  • Page 41: Refractometer Information

    : integer, PT1000 value : float, image quality factor : float, mA output value BGlight : integer, background light level : integer, sequence number of measurement Timestamp : integer, time since device start-up © Copyright Vaisala 2019. All rights reserved.

  • Page 42: Error Message 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. Document/Revision No. /2.00 Effective: September 2, 2019...

  • Page 43: Instrument Verification

    – 1.5200 The accuracy of the certified standard refractive index liquids is ±0.0002 and they can be traced back to NIST standards # 1823 and # 1823 II. As the specified accuracy of the © Copyright Vaisala 2019. All rights reserved.

  • Page 44: Handling The R.i. Liquids

    PR-43 is ±0.0002, then the representative level is the sum of the two accuracy specifi- cations, 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 Once all liquids have been measured, the verification can be saved by clicking the verification button. Please note that the button is only available after a sufficient number of points has been measured. © Copyright Vaisala 2019. All rights reserved.

  • Page 46: Corrective Action

    Repeat the verification procedure. If the verification still fails, print out (or photograph) <info@kpatents.com> the verification report. Send the data to or your nearest Vaisala K-PATENTS® representative and wait for further instructions. Document/Revision No. /2.00 Effective: September 2, 2019 IM-EN-PR43GEN...

  • Page 47: Apr-43 Refractometer Field Calibration Form

    For contact information, please see http://www.kpatents.com/. Refractometer serial no: Customer: Address: Fax: Email: Sample description: Solvent (water/other): Laboratory method: Date: Data collected by: Sample no LAB% CALC CONC For closer instructions, see section 5.2.2. © Copyright Vaisala 2019. All rights reserved.
  • Page 48 PR-43 instruction manual Document/Revision No. /2.00 Effective: September 2, 2019 IM-EN-PR43GEN...

  • Page 49: Beu 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 52 www. v aisala.com...

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