Vaisala PR-43 User Manual

M212455EN-B

User Guide

Process Refractometer

PR-43 Series

PUBLISHED BY

Vaisala Oyj

Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland P.O. Box 26, FI-00421 Helsinki, Finland

[phone]

Visit our Internet pages at www.vaisala.com.

© Vaisala 2020

No part of this document may be reproduced, published or publicly displayed in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be modified, translated, adapted, sold or disclosed to a third party without prior written permission of the copyright holder. Translated documents and translated portions of multilingual documents are based on the original English versions. In ambiguous cases, the English versions are applicable, not the translations.

The contents of this document are subject to change without prior notice.

Local rules and regulations may vary and they shall take precedence over the information contained in this document. Vaisala makes no representations on this document’s compliance with the local rules and regulations applicable at any given time, and hereby disclaims any and all responsibilities related thereto.

This document does not create any legally binding obligations for Vaisala towards customers or end users. All legally binding

obligations and agreements are included exclusively in the applicable supply contract or the General Conditions of Sale and General Conditions of Service of Vaisala.

This product contains software developed by Vaisala or third parties. Use of the software is governed by license terms and conditions included in the applicable supply contract or, in the absence of separate license terms and conditions, by the General License Conditions of Vaisala Group.

This product may contain open source software (OSS) components. In the event this product contains OSS components, then such OSS is governed by the terms and conditions of the applicable OSS licenses, and you are bound by the terms and conditions of such licenses in connection with your use and distribution of the OSS in this product. Applicable OSS licenses are included in the product itself or provided to you on any other applicable media, depending on each individual product and the product items delivered to you.

		Table of contents
Table of contents
1.	About this document.....................................................................................	5
1.1	Version information..........................................................................................	5
1.2	Related manuals................................................................................................	5
1.3	Documentation conventions...........................................................................	5
1.4	Trademarks........................................................................................................	6
2.	Product overview............................................................................................	7
2.1	Safety..................................................................................................................	7
3.	Refractometer connections........................................................................	8
3.1	Power supply.....................................................................................................	8
3.2	mA output..........................................................................................................	8
3.3	Cable connections.............................................................................................	8
3.3.1	Split cable connections.............................................................................	9
3.4	Ethernet connection.......................................................................................	10
3.4.1	IP settings for PR-43................................................................................	12
3.4.2	IP settings for stand-alone computer....................................................	12
3.4.3	Configuring refractometer network.......................................................	13
3.4.4	Testing Ethernet connection...................................................................	14
3.4.5	Troubleshooting connection...................................................................	14
4.	Web interface..................................................................................................	16
4.1	Main page.........................................................................................................	16
4.2	Diagnostics.......................................................................................................	17
4.2.1	Diagnostic values.....................................................................................	18
4.3	Parameters.......................................................................................................	18
4.3.1	Measuring field samples..........................................................................	19
4.3.2	Optical image..........................................................................................	20
4.4	Verification.......................................................................................................	21
5.	Startup...............................................................................................................	23
5.1	Startup.............................................................................................................	23
5.1.1	Initial check..............................................................................................	23
5.1.2	mA check..................................................................................................	23
5.1.3	Calibration check.....................................................................................	23
5.2	Viewing refractometer status........................................................................	23
6.	Configuration and calibration.................................................................	24
6.1	Configuring refractometer............................................................................	24
6.1.1	Signal damping........................................................................................	24
6.1.2	Configuring mA output..........................................................................	26
6.1.3	Ethernet speed setting...........................................................................	27
6.1.4	Skip count................................................................................................	28
6.2	Calibrating concentration measurement.....................................................	29
6.2.1	Chemical curve........................................................................................	30
6.2.2	Field calibration.......................................................................................	30

1

PR-43 Series User Guide

M212455EN-B

7.	Troubleshooting............................................................................................	32
7.1	Diagnostic message priorities.......................................................................	32
7.2	Hardware.........................................................................................................	32
7.3	Measurement..................................................................................................	33
8.	Principle of measurement.........................................................................	35
9.	Ethernet protocol specification..............................................................	37
9.1	Communication protocol...............................................................................	37
9.1.1	Request format........................................................................................	37
9.1.2	Response format.....................................................................................	37
9.1.3	Request and response errors.................................................................	38
9.2	Request-response pair specification............................................................	38
9.3	Error message specification.........................................................................	40
10.	Instrument verification...............................................................................	42
10.1	Refractometer verification............................................................................	42
10.1.1	Handling R.I. liquids................................................................................	43
10.2	Verification procedure...................................................................................	43
10.3	Corrective action............................................................................................	45
Appendix A: PR-43 refractometer field calibration form.....................		46
Appendix B: EU declaration of conformity..............................................		47
Warranty............................................................................................................		49
Technical support............................................................................................		49
Recycling...........................................................................................................		49

2

List of figures

List of figures

Figure	1	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.............................................................................................................	10
Figure	5	Three refractometers in the same network...............................................	11
Figure	6	Connecting refractometer(s) via wireless..................................................	11
Figure	7	Using fiber link to connect refractometer(s).............................................	11
Figure	8	Typical IP configuration for stand-alone laptop
		connected to refractometer (laptop WLAN turned o„).......................	13
Figure	9	Example PR-43 network................................................................................	13
Figure 10		Pinging address 169.254.43.43; ping returned fully and
		connection OK..................................................................................................	15
Figure	11	Main page...........................................................................................................	17
Figure	12	Measurement cycles since last login...........................................................	17
Figure	13	Diagnostics page..............................................................................................	18
Figure 14		Parameters page..............................................................................................	19
Figure 15		Measuring field samples...............................................................................	20
Figure 16		Raw optical image of compact refractometer.........................................	21
Figure	17	Raw optical image of probe refractometer..............................................	21
Figure 18		Verification page.............................................................................................	22
Figure 19		Exponential damping.....................................................................................	25
Figure 20		Linear damping................................................................................................	25
Figure 21		Slew rate damping..........................................................................................	26
Figure 22		Default mA output values.............................................................................	27
Figure 23		Setting secondary mA default.....................................................................	27
Figure 24		Choosing ethernet speed.............................................................................	28
Figure 25		Setting skip count value................................................................................	28
Figure 26		Concentration calibration layers.................................................................	29
Figure 27		Refractometer principle................................................................................	35
Figure 28		Optical images.................................................................................................	36
Figure 29		From image detection to concentration...................................................	36
Figure 30		Universal sample holder PR-1012................................................................	44

3

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

4

Chapter 1 – About this document

1. About this document

1.1 Version information

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.

Table 1 Document versions (English)

Document code	Date	Description
M212455EN-B	April 2020	Manual updated to new format, template, and document code.
		Minor changes to content.
IM-EN-	June 2018	First version.
PR43GEN v.
2.00

1.2 Related manuals

Table 2 PR-43 manuals

	Document Code	Name
	IM-EN-CI	Compact User Interface CI Instruction Manual
	IM-EN-MI	Multichannel User Interface MI Instruction Manual
	M212438EN	Sanitary Process Refractometer PR-43-AC/AP User Guide
	IM-EN-	Process Refractometer PR-43-GC/GP Instruction Manual
	PR43GCGP
	IM-EN-	Process Refractometer PR-43-…-IA/AX/CU Instruction Manual
	PR43IAAX

1.3 Documentation conventions

WARNING! Warning alerts you to a serious hazard. If you do not read and follow instructions carefully at this point, there is a risk of injury or even death.

5

PR-43 Series User Guide

M212455EN-B

CAUTION! Caution warns you of a potential hazard. If you do not read and follow instructions carefully at this point, the product could be damaged or important data could be lost.

Note highlights important information on using the product.

Tip gives information for using the product more eˆciently.

Lists tools needed to perform the task.

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.

All other product or company names that may be mentioned in this publication are trade names, trademarks, or registered trademarks of their respective owners.

6

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 Principle of measurement (page 35) for more information on the measurement principle.

PR-43 refractometers come in three standard packages: a stand-alone refractometer with Web user interface WI, a refractometer with Compact user interface CI and 1-4 refractometers with Multichannel user interface MI.

The web user interface WI is for direct control system integration in applications where no industrial computer or monitoring display is required. For more information, see Refractometer connections (page 8), Startup (page 23) and Web interface (page 16). Compact user

interface provides a local or remote display with the same information as WI (see Compact User Interface CI Instruction Manual). Multichannel user interface provides high performance industrial computing e.g. for multiple connectivity and wash control (see Multichannel User Interface MI Instruction Manual).

2.1 Safety

This product has been tested for safety. Note the following precautions:

WARNING! Only licensed experts may install electrical components. They must adhere to local and state legislation and regulations.

The process medium may be hot or otherwise hazardous. Use shields and protective clothing adequate for the process medium. Do not rely on avoidance of contact with the process medium.

Wear protective eyewear.

Wear protective gloves.

Precautions when removing a sensor from the process line :

•Check that the process line is depressurized and drained

•Loosen the flowcell screws cautiously; be prepared to tighten again

•Ensure you are clear of any possible spillage and you have a clear emergency escape path

7

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.

3.1 Power supply

The PR-43 refractometer requires a 24 V DC power supply (allowable tolerance is ±10 %). The current consumption of the refractometer is less than 80 mA. The power supply should be shielded from external voltage surges.

3.2 mA output

The PR-43 refractometer can be connected with just an mA output. The analogue connection transmits measurement signal only.

PR-43 REFRACTOMETER

M-12-8 pin, A-code, M non-Ex

	PR-8680	PR-8432
F	M12-8 pin, A-code, F
	Field plug	Power supply and
		mA output cable

max. 200m (656ft)

Figure 1 Analogue connection

3.3 Cable connections

If the refractometer is connected with Split cable PR-8431, both mA and Ethernet outputs are available.

8

Chapter 3 – Refractometer connections

F

10m (33ft)

PR-43 REFRACTOMETER

M-12-8 pin, A-code, M non-Ex

10m (33ft)

PR-8431

Split cable M12 M12-8 pin, A-code, F

Ethernet (M12-4 pin, D-code,M) mA, 24V

M

	PR-43 REFRACTOMETER
	M-12-8 pin, A-code, M
	non-Ex
F	PR-8430
	Platform 4 cable
	M12-8 pin, A-code, F+M
	Ethernet, mA, 24V

PR-8431

Split cable M12 M12-8 pin, A-code, F

Ethernet (M12-4 pin, D-code,M) mA, 24V

1m (3ft)

90m (295ft)

max. 90m (295ft)

M

F

M

	PR-43 REFRACTOMETER
	M-12-8 pin, A-code, M	PR-8660
	non-Ex
		Platform 4 cable extender
		M12-8 pin, A-code, F+M

F	PR-8430			PR-8430
	Platform 4 cable			Platform 4 cable
	M12-8 pin, A-code, F+M			M12-8 pin, A-code, F+M
	Ethernet, mA, 24V			Ethernet, mA, 24V
180m (590ft)	max. 90m (295ft)	M	F	max. 90m (295ft)	M	F

PR-8431

Split cable M12 M12-8 pin, A-code, F

Ethernet (M12-4 pin, D-code,M) mA, 24V

1m (3ft)

M

Figure 2 mA and Ethernet output (with M12 ethernet connector)

PR-43

REFRACTOMETER

M-12-8 pin, A code, M

Unclassified area

F

10m (33ft)

PR-8444-001/010

Split cable M12 M12-8 pin, A-code, F Ethernet (RJ 45) mA, 24V

1m (3ft) or 10m (33ft)

PR-43
REFRACTOMETER
M-12-8 pin, A code, M
Unclassified area
F	PR-8430-___
	Platform 4 cable
	M12-8 pin, A-code, F+M
	Ethernet, mA, 24V
90m (295ft)	max. 90m (295ft)	M	F

PR-8444-001

Split cable M12 M12-8 pin, A-code, F Ethernet (RJ45)

mA, 24V

1m (3ft)

PR-43			PR-8660
REFRACTOMETER			Platform 4 cable extender
M-12-8 pin, A code, M			M12-8 pin, A-code, F+M
Unclassified area	PR-8430-___			PR-8430-___
F
	Platform 4 cable			Platform 4 cable
	M12-8 pin, A-code, F+M			M12-8 pin, A-code, F+M
	Ethernet, mA, 24V			Ethernet, mA, 24V
180m (590ft)	max. 90m (295ft)	M	F	max. 90m (295ft)	M	F

PR-8444-001

Split cable M12 M12-8 pin, A-code, F Ethernet (RJ45)

mA, 24V

1m (3ft)

Figure 3 mA and Ethernet output (with RJ-45 ethernet connector)

3.3.1 Split cable connections

In split cables PR-8431 and PR-8444 the power cable and the mA output cable are marked near the end of the cable.

The power cable includes the following color-coded internal cabling:

9

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. The refractometer can be configured and monitored without any special software by using a standard web browser. Ethernet protocol specification (page 37) provides all the specifications necessary to write a data acquisition program.

The connection on the Split cable PR-8431 is an industrial M12 connector. If connection to a device that uses RJ45 is desired, for example, to connect with a laptop, Split cable PR-8444 is needed. Alternatively, you can use Ethernet converter cable PR-8442.

Figure 4 RJ45 network connection with Ethernet converter cable PR-8442

Several refractometers can be connected to the same Ethernet network. The refractometer also has an automatic function (known as Auto MDI/MDIX) to detect the polarityof the network so that the network may utilize either crossover or straight interconnecting cables.

The following figure shows an example of how to connect three refractometers to an existing LAN with a switch.

10

Chapter 3 – Refractometer connections

Hub/Switch	Ethernet
Ethernet	cable

LAN

24 V mA

24 V mA DC out

24 V mA DC out DC out

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 mA DC out

Figure 6 Connecting refractometer(s) via wireless

The maximum distance of a single Ethernet connection is 100 m (including one joint adapter/ coupler), but if longer distances are required, a fiber link may be used to extend the range (see the following figure). The range may be up to several kilometers with a suitable fiber connection.

Ethernet Media Fiber Media

converter converter

24 V mA DC out

Figure 7 Using fiber link to connect refractometer(s)

11

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. This address remains in the refractometer even after a different IP address has been set. The refractometer answers in the address that is first called up after startup.

If there are more than one refractometer in the same network, this address cannot be used. See Configuring refractometer network (page 13).

The IP address of the refractometer can be changed through the refractometer homepage, see Web interface (page 16).

3.4.2 IP settings for stand-alone computer

When a computer with automatic IP settings (DHCP enabled) is turned on in a network with only the refractometer, the computer should automatically obtain an IP address 169.254.x.x. In this case the factory default address of the refractometer can be used for connecting without any further changes in settings. If this does not work, make sure that the WLAN (Wireless network connection) is not active on the computer that is connected to the refractometer. If the WLAN is active, the computer’s Ethernet connection may not function as expected. Also, obtaining the 169.254.x.x. address may take up to a minute.

If the connection to the refractometer still cannot be achieved, the computer’s IP address can be checked by opening the command window (command prompt) and by typingthe command ipconfigat the command prompt (press ENTER to give the command), see the figure below (in Mac OS X and Linux the same command is called ifconfig). The information given includes the computer’s IP address. If the address does not start with 169.254, the IP address of the computer needs to be configured manually to, for example, 169.254.43.44, netmask 255.255.0.0.

For further troubleshooting, see Troubleshooting connection (page 14).

The connection does not work if the computer and the refractometer have exactly the same IP address.

When the network settings of the refractometer and / or computer have been configured according to the instructions above, the next step is to test the connection as instructed in Testing Ethernet connection (page 14).

12

Chapter 3 – Refractometer connections

Figure 8 Typical IP configuration for stand-alone laptop connected to refractometer (laptop WLAN turned o„)

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.

If the network is a stand-alone network with only one refractometer and one or more computers with no connection to any other network, then the IP addresses can be chosen rather freely. One possibility is to number the refractometers so that they all have 192.168.43.x addresses so that every computer and refractometer has a di„erent number x between 1 254. The subnet mask (or netmask) is in this case 255.255.255.0.

IP = 192.168.43.3	IP = 192.168.43.100
	netmask = 255.255.255.0

IP = 192.168.43.2

IP = 192.168.43.1

Hub/Switch

Figure 9 Example PR-43 network

There are no settings for subnet mask, default gateway or name servers in the refractometer, as these settings are not required.

13

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).

The factory-default IP address of the refractometer is 169.254.43.43. This address always responds, see IP settings for PR-43 (page 12).

3.4.5 Troubleshooting connection

If the refractometer cannot be reached through the network, check the following:

1.The refractometer receives power; the Ethernet switch link light is lit.

2.The network settings of the computer are compatible with those of the refractometer, see IP settings for stand-alone computer (page 12).

3.If the refractometer should be at IP address 169.254.43.43, but cannot be reached, check that there is only one refractometer in the same network, as otherwise there is an address conflict.

4.Check that the software firewall of the computer does not block the connections.

A useful test to determine whether the problem is in network settings is to set up a small network. Perform the following steps:

1.Set up a network of only one refractometer and one computer.

2.Check that the computer has suitable network settings and that its WLAN connection is turned o„, see IP settings for stand-alone computer (page 12).

3.Use the ping utility of the computer to try and reach the refractometer.

The ping utility is available in Windows systems by using the Command Prompt (usually found in the Accessories; or open Run, type cmd in the empty line and press ENTER to open Command Prompt). Go to the command interface, type the name of the command and the IP address you want to check and press ENTER. If the Ethernet connection is physically working and the address given to ping is correct, the refractometer answers the ping and return any data packets sent to it.

14

Chapter 3 – Refractometer connections

Figure 10 Pinging address 169.254.43.43; ping returned fully and connection OK

15