Vaisala K-PATENTS PR-21-S User manual

IM-EN-PR21S-A
Instruction Manual
Vaisala K-PATENTS® Process Refractometer
PR-21-S

PR-21-S instrucon manual

INSTRUCTION MANUAL
FOR INLINE REFRACTOMETER
PR-21-S (-…-GP/FM/IA)
WARNING
The process medium may be hot or otherwise hazardous.
Precautions when removing the sensor from the process line:
Make positively sure that the process line is not under pressure. Open a vent valve to the atmosphere.
For a prism wash system, close a hand valve for the wash medium and disable the wash valve.
Loosen the clamp cautiously, be prepared to tighten again.
Be out of the way of any possible splash and ensure the possibility of escape.
Use shields and protective clothing adequate for the process medium.
Do not rely on avoidance of contact with the process medium.
After removal of the sensor, it may be necessary to mount a blind cover for security reasons.
It is the user’s responsibility to follow manufacturer’s safety and operating instructions. The client’s
organization has the responsibility to develop and maintain occupational safety and create a safety culture
where individuals are expected to follow safety instructions at all times. Any negligence towards safety
instructions or failure to comply with safe practices should not be tolerated. It is the manufacturer’s
responsibility to produce goods that are safe to use when instructions are followed.
Warranty
For standard warranty terms and conditions, see www.vaisala.com/warranty.
Please observe that any such warranty may not be valid in case of damage due to normal wear and tear,
exceptional operating conditions, negligent handling or installation, or unauthorized modifications. 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 helpd[email protected]. Provide at least the following supporting infor-
mation:
• Product name, model, and serial number
• Name and location of the installation site
• Name and contact information of a technical person who can provide further information of the problem
For more information, see www.vaisala.com/support.
Document & Revision IM-EN-PR21S-A Effective: October 1, 2019
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.kpatents.com/.
THE PASSWORD FOR PR-21-S IS 7 8 4 5 1 2.
VAISALA
Postal address:
P.O. Box 26, FI-00421
Helsinki, Finland
Tel. [phone]
http://www.vaisala.com/
VAISALA
Street address:
Vanha Nurmijärventie 21,
FI-01670 Vantaa, Finland

Table of contents
1 Introducon ......................................................... 1
1.1 Standardspecicaons .......................................... 3
1.1.1 Model code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Principleofmeasurement ........................................ 7
1.3 General safety consideraons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Disposal ...................................................... 8
2 Inlinerefractometersensor ............................................. 9
2.1 Sensordescripon .............................................. 9
2.2 Mounng .................................................... 10
2.2.1 Sensor locaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Mounng examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.3 Mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.4 Wash nozzle for steam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.5 Check list for pipe mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.6 Check list for mounng in a tank, a vessel or a large pipe . . . . . . . . . . . . 18
3 IndicangtransmierDTR ............................................. 19
3.1 Indicang transmier descripon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Mounng Indicang transmier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Electricalconnecons .......................................... 20
3.3.1 Interconnecng cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.2 Connecng sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.3 Connecng the Indicang transmier . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.3.4 Power terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.5 Reset buon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4 Prismwashsystems .................................................. 25
4.1 Prismcoang ................................................. 25
4.2 Prism wash with integral steam nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 Prism wash with integral high pressure water nozzle . . . . . . . . . . . . . . . . . 29
4.4 Prism wash with ow through cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.5 Recommended wash pressures and mes . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 Startupanduse ..................................................... 35
5.1 Startup ...................................................... 35
5.1.1 Inial check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.1.2 Calibraon check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.1.3 Tesng prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.2 Using the Indicang transmier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.2.1 Keyboard funcons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.2.2 Display setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.3 Viewingsysteminformaon ..................................... 39
5.4 Viewingsensorstatus .......................................... 39
5.4.1 Opcal image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.4.2 Diagnosc values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.4.3 Temperature measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.4.4 Sensor head humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.5 Sensorvericaon ............................................ 41
6 Conguraonandcalibraon .......................................... 43
6.1 Conguring output signal damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.1.1 Exponenal damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.1.2 Linear damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1.3 Slew rate limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2 Conguring output signal hold funconality . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2.1 External hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2.2 Hold during wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2.3 Tolerance me . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2.4 QF threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.2.5 Hold source interacons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.2.6 Hold and signal damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.3 Conguringrelays ............................................. 47
6.4 Conguringinputswitches ...................................... 50
6.5 Conguring refractometer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.5.1 Conguring mA outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.6 Calibrang the concentraon measurement . . . . . . . . . . . . . . . . . . . . . . . . 54
6.6.1 The chemical curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.2 Selecng display units and display decimals . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.3 Field calibraon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.4 Entering eld calibraon parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.6.5 Direct BIAS adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.7 Conguringprismwash ........................................ 57
6.7.1 Wash cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.7.2 Seng prism wash parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.7.3 Mechanical zero adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6.7.4 Sensor rangeability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7 Regularmaintenance ................................................. 65
7.1 Checking the sensor humidity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.2 Checking the prism and prism gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.3 Disassembling and assembling the sensor . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.3.1 Disassembling the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.3.2 Removing electronic cards PR-10301 and PR-10201 . . . . . . . . . . . . . . . . 67
8 Troubleshoong ..................................................... 69
8.1 Hardware .................................................... 69
8.1.1 Blank display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.1.2 Diagnosc LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.1.3 Display unreadable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.1.4 Message NO SENSOR .......................................... 74
8.1.5 Message NO SIGNAL ........................................... 74
8.1.6 Message SHORT-CIRCUIT ........................................ 74

8.1.7 Message HIGH SENSOR HUMIDITY .................................. 75
8.1.8 Message HIGH SENSOR TEMP ..................................... 75
8.1.9 Message HIGH TRANSMITTER TEMP ................................. 75
8.1.10 Message LOW TRANSMITTER VOLT .................................. 75
8.1.11 Relays and switches not working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8.1.12 Output signal error during NORMAL OPERATION . . . . . . . . . . . . . . . . . . . . . . 75
8.2 Measurement ................................................ 76
8.2.1 Message OUTSIDE LIGHT ERROR .................................... 76
8.2.2 Message NO OPTICAL IMAGE ...................................... 76
8.2.3 Message PRISM COATED ......................................... 76
8.2.4 Message OUTSIDE LIGHT TO PRISM .................................. 77
8.2.5 Message LOW IMAGE QUALITY .................................... 77
8.2.6 Message NO SAMPLE ........................................... 77
8.2.7 Message TEMP MEASUREMENT FAULT ................................ 77
8.2.8 Concentraon dri during NORMAL OPERATION . . . . . . . . . . . . . . . . . . . 77
8.3 Wash ....................................................... 78
8.3.1 Message EXTERNAL HOLD ........................................ 78
8.3.2 Messages PRECONDITIONING,WASH,RECOVERING ....................... 78
8.3.3 Message PRISM WASH FAILURE .................................... 78
8.3.4 Message EXTERNAL WASH STOP .................................... 78
8.3.5 Message LOW TEMP WASH STOP ................................... 78
8.3.6 Message NO SAMPLE/WASH STOP .................................. 78
8.4 Diagnoscmessagestable ...................................... 79
9 Indicang transmier DTR specicaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.1 Compability ................................................. 81
9.1.1 Transmier program versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.2 Modelcode .................................................. 82
9.2.1 Transmier model code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.2.2 Interconnecng cable model code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.3 Transmierpartslist ........................................... 83
9.4 Specicaons ................................................. 85
9.4.1 Indicang transmier specicaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
9.4.2 Interconnecng cable specicaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10 Sensortypes ........................................................ 87
10.1 PR-21-Spartlist ............................................... 87
10.2 SensorPR-21-S ................................................ 88
10.3 PR-21-S process refractometers in potenally explosive atmosphere . . . . 90
10.3.1 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10.4 Intrinsically safe refractometers PR-21-...-IA . . . . . . . . . . . . . . . . . . . . . . . . 91
10.4.1 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
10.4.2 Intrisincally safe mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
10.4.3 Isolator/barriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
11 Ethernet connecon specicaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
11.1 Cable requirements and connecon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
11.1.1 Ethernet cable specicaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

PR-21-S instrucon manual
11.1.2 Connecng the Ethernet cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
11.2 Conneconsengs ........................................... 99
11.2.1 IP sengs for DTR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.2.2 IP sengs for stand-alone computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.3 Tesng the Ethernet connecon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
11.3.1 Troubleshoong the connecon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
11.4 Instrumenthomepage ........................................ 102
11.4.1 Remote panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
11.4.2 Sensor vericaon cercate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
11.5 Collecng data via Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
11.5.1 Communicaon protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
11.5.2 Request-response pair specicaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
11.5.3 Error message specicaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
12 Sensorvericaon .................................................. 109
12.1 Refracve index nDvericaon ................................. 109
12.1.1 Handling the R.I. liquids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
12.2 Vericaonprocedure ........................................ 110
12.3 Sensor vericaon cercate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
12.4 Correcveacon ............................................. 113
13 Regulatory compliance and cercaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
13.1 EC Declaraon of Conformity for PR-21 series of
refractometers .............................................. 117
13.2 Declaraon of Conformity for PR-21-...-IA models (ATEX) . . . . . . . . . . . . 118
A Index ............................................................. 119
B PR-21-S sensor vericaon form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
C PR-21-Seldcalibraonform ......................................... 125
D DTRcommandselecontree ......................................... 127
E STRcommandselecontree .......................................... 129

1 Introducon 1
1 Introducon
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            
             
          
            
          
                 
             
          
 
Figure 1.1 Sensor standard, model PR-21-S

2PR-21-S instrucon manual
Figure 1.2 Sensor LPH, model PR-21-S
INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14
Effective: May 15, 2009
3
2. GENERAL INFORMATION
2.1. EQUIPMENT
The K-Patents Process Refractometer consists of three parts (Figure 2.10): the Sensor (A), the Interconnecting
Cable (B) and the Indicating transmitter (C). For description of the intrinsically safe K-Patents Process
Refractometer, see Chapter 12.
Figure 2.10 Equipment
For intrinsically safe equipment, see Figure 12.10.
The K-Patents Process Refractometer provides a 4 to 20 mA DC output signal proportional to process
solution concentration. A serial output is also available as a standard.
Identification: By Serial Number (S/N) label (Figure 2.11) on the Indicating transmitter front panel and by
Serial number on sensor label (Figure 2.10, Figure 2.12), e.g. 2003E2C-5604. The sensor type, e.g. 50, is
stamped on the probe tip (see Section 2.2.1 for model codes).
PROCESS REFRACTOMETER
IT - RE - GP S/N:2003E20-5604
100 - 115/220 - 240 V AC, 50/60 Hz, 20V
A
TAG:
Figure 2.11 Identification label,
Indicating transmitter.
Figure 2.12 Identification label, Sensor.
For intrinsically safe sensor label,
see Figures 12.11 and 12.12.
Figure 1.3 Refractometer equipment PR-21-S
Model: INDICATING TRANSMITTER
Product code: DTR-U-GP-AC
S/N: T06802
Tag:
100-240 V AC, 50/60 Hz, 30 VA
Made by VAISALA Oyj, Vantaa, Finland
www.vaisala.com IP66
Dual transmier label Sensor idencaon label
Figure 1.4 Labels