Vaisala DRYCAP DMT143 Bedienungsanleitung

M211435EN-J

User Guide

Vaisala DRYCAPâDew Point Transmitter

DMT143

PUBLISHED BY

Vaisala Oyj

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.

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

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.

Table of Contents

1. About This Document................................................................................... 7

1.1 Version Information.......................................................................................... 7

1.2 Related Manuals................................................................................................ 7

1.3 Documentation Conventions...........................................................................7

1.4 Trademarks........................................................................................................ 8

2. Product Overview........................................................................................... 9

2.1 Introduction to DMT143 ...................................................................................9

2.2 Basic Features and Options........................................................................... 10

2.2.1 Connectivity to Vaisala Insight Software................................................11

2.3 DMT143 and DMT143L Transmitter Parts...................................................... 12

2.3.1 DMT143 with G1/2” ISO228/1 Thread..................................................... 12

2.3.2 DMT143 with NPT Thread........................................................................ 13

2.3.3 DMT143L with G1/2” ISO228/1 Thread...................................................14

2.4 Loop-powered Display................................................................................... 14

2.5 Connection Cables...........................................................................................15

2.6 Sampling Accessories..................................................................................... 16

2.7 Safety................................................................................................................16

2.7.1 ESD Protection......................................................................................... 16

2.8 Regulatory Compliances.................................................................................17

3. Functional Description................................................................................ 18

3.1 DRYCAPâTechnology....................................................................................18

3.1.1 Autocalibration.........................................................................................18

3.1.2 Sensor Purge.............................................................................................18

3.1.3 Sensor Warming in High Humidities and Freezing Conditions.......... 19

3.2 DMT143 Startup Sequence............................................................................. 19

3.3 Alarm LED....................................................................................................... 20

Table of Contents

4. Installation....................................................................................................... 22

4.1 Conﬁguring Transmitter Before Installation................................................22

4.2 Selecting the Location................................................................................... 22

4.3 Installing the Transmitter...............................................................................23

4.4 Wiring.............................................................................................................. 24

4.4.1 Power Supply Requirements................................................................. 25

4.5 Sampling from a Process............................................................................... 27

4.6 Sampling Accessories.................................................................................... 28

4.6.1 DMT242SC Sampling Cell.......................................................................28

4.6.2 DMT242SC2 Sampling Cell with Swagelok Connectors..................... 28

4.6.3 DSC74 Sampling Cell with Quick Connector and Leak Screw........... 29

4.6.4 DSC74B Two-Pressure Sampling Cell...................................................30

5. Operation.........................................................................................................36

5.1 Transmitter Start-up.......................................................................................36

5.2 Vaisala Insight Software................................................................................ 36

5.2.1 Connecting to Insight Software.............................................................37

5.3 Operation with DM70 Handheld Dew Point Meter.....................................38

6. Modbus Communication........................................................................... 40

7. Serial Communication................................................................................. 41

7.1 Connecting to the Serial Interface.................................................................41

7.2 Terminal Application Settings........................................................................41

7.3 Accessing Serial Interface in Devices with Modbus Output......................42

7.4 List of Serial Commands................................................................................43

7.5 Device Information.........................................................................................44

7.5.1 Show Device Information.......................................................................44

7.5.2 Show Analog Output Mode................................................................... 45

7.5.3 Show Firmware Version..........................................................................45

7.5.4 Show Firmware Information.................................................................. 45

7.5.5 Show Currently Active Errors................................................................ 46

7.5.6 Show Serial Number...............................................................................46

7.5.7 Show Command List...............................................................................46

7.6 Conﬁguring Analog Output...........................................................................47

7.6.1 Set Analog Output Parameters and Scaling........................................ 47

7.6.2 Set Analog Output Error Notiﬁcation...................................................48

7.6.3 Extend Analog Output Range............................................................... 49

7.6.4 Test Analog Output.................................................................................49

7.6.5 Enable or Disable Analog Output......................................................... 50

DMT143 User Guide M211435EN-J

7.7 Serial Line Output Commands..................................................................... 50

7.7.1 Start Measurement Output....................................................................50

7.7.2 Stop Measurement Output.................................................................... 50

7.7.3 Set Output Interval................................................................................. 50

7.7.4 Output a Reading Once...........................................................................51

7.8 Conﬁguring Measurement Parameters......................................................... 51

7.8.1 Set Measurement Output Format.......................................................... 51

7.8.2 Set Measurement Filtering..................................................................... 53

7.8.3 Set Pressure Compensation Value........................................................ 54

7.8.4 Select Unit................................................................................................ 55

7.8.5 View User Adjustment Parameters....................................................... 55

7.8.6 Set User Adjustment Parameters..........................................................56

7.9 Conﬁguring Serial Line Operation................................................................ 57

7.9.1 Set Serial Line Operating Mode............................................................. 57

7.9.2 Set Serial Line Settings........................................................................... 57

7.9.3 Set Transmitter Address.........................................................................58

7.9.4 Set Serial Line Response Time...............................................................59

7.10 Other Commands........................................................................................... 59

7.10.1 Opening the Transmitter in POLL Mode...............................................59

7.10.2 Closing the Connection to a Transmitter in POLL Mode.................... 59

7.10.3 Conﬁgure the Alarm LED.......................................................................60

7.10.4 Reset Transmitter..................................................................................... 61

7.10.5 Restore Factory Settings.........................................................................61

8. Maintenance....................................................................................................62

8.1 Periodic Maintenance.....................................................................................62

8.1.1 Cleaning....................................................................................................62

8.1.2 Calibration................................................................................................62

8.1.3 Changing the Filter................................................................................. 62

8.1.4 Field Check Using DM70 Handheld Dew Point Meter.........................63

8.2 Repair Maintenance........................................................................................65

9. Troubleshooting............................................................................................66

9.1 Solving Typical Problems.............................................................................. 66

9.2 Error Messages in Insight Software..............................................................67

9.3 Error Codes in MI70 Handheld Meter...........................................................67

9.4 Unknown Serial Settings............................................................................... 68

10. Technical Data................................................................................................69

10.1 DMT143 Speciﬁcations...................................................................................69

10.2 Dimensions...................................................................................................... 72

10.3 Spare Parts and Accessories......................................................................... 73

Table of Contents

Appendix A: Modbus Reference................................................................. 75

A.1 Default Communication Settings..................................................................75

A.2 Function Codes............................................................................................... 75

A.3 Data Encoding.................................................................................................75

A.3.1 32-Bit Floating Point Format................................................................. 75

A.3.2 16-Bit Integer Format..............................................................................76

A.4 Modbus Registers........................................................................................... 76

A.4.1 Measurement Data Registers.................................................................77

A.4.2 Status Registers.......................................................................................77

A.4.3 Conﬁguration Registers..........................................................................78

A.4.4 Test Value Registers................................................................................80

A.4.5 Device Identiﬁcation Objects................................................................ 80

A.5 Modbus Communication Examples...............................................................81

Warranty............................................................................................................ 85

Technical Support............................................................................................85

Recycling........................................................................................................... 85

DMT143 User Guide M211435EN-J

List of Figures

Figure 1 DMT143 Parts – Model with ISO Thread.....................................................12

Figure 2 DMT143 Parts – Model with NPT Thread....................................................13

Figure 3 DMT143L Parts .................................................................................................14

Figure 4 Nokeval 301 Loop-powered Display........................................................... 15

Figure 5 DMT143 Startup Sequence...........................................................................20

Figure 6 DMT143 Digital and Analog Connectors...................................................25

Figure 7 Wiring the Digital Connector.......................................................................25

Figure 8 Wiring the Analog Connector......................................................................25

Figure 9 Example of Current Consumption During Purge................................... 26

Figure 10 Example of Current Consumption During Autocalibration................. 27

Figure 11 Sampling Cells DMT242SC2 (left) and DMT242SC (right).................. 29

Figure 12 DSC74 Sampling Cell with Accessories.................................................... 30

Figure 13 DSC74B............................................................................................................... 31

Figure 14 Removing the Leak Screw............................................................................ 32

Figure 15 Default Assembly of DSC74C.......................................................................33

Figure 16 Alternative Assembly of DSC74C (for Tight Spaces)............................34

Figure 17 DM240FA with DMT143................................................................................. 35

Figure 18 Settings Menu.................................................................................................. 38

Figure 19 Measurement Settings Menu....................................................................... 38

Figure 20 DMT143 Dimensions – Model with ISO Thread........................................72

Figure 21 DMT143 Dimensions – Model with NPT Thread...................................... 72

Figure 22 DMT143L Dimensions..................................................................................... 73

List of Figures

List of Tables

Table 1 Document Versions (English)...........................................................................7

Table 2 Related Manuals...................................................................................................7

Table 3 Output Parameters of the DMT143.................................................................9

Table 4 Alarm LED States..............................................................................................20

Table 5 Connector Pinouts............................................................................................ 24

Table 6 Default Modbus Serial Communication Settings.....................................40

Table 7 Default Serial Interface Settings....................................................................41

Table 8 List of Serial Commands................................................................................. 43

Table 9 Error Messages on ERRS Command............................................................46

Table 10 FORM Command Parameters ....................................................................... 52

Table 11 FORM Command Modiﬁers............................................................................ 52

Table 12 Pressure Conversion Coecients................................................................. 55

Table 13 Selection of Output Modes.............................................................................57

Table 14 Troubleshooting Table.....................................................................................66

Table 15 Error Messages in Insight Software..............................................................67

Table 16 Error Codes in MI70..........................................................................................67

Table 17 Measurement Performance............................................................................69

Table 18 Operating Environment...................................................................................70

Table 19 Inputs and Outputs...........................................................................................70

Table 20 Mechanical Speciﬁcations................................................................................71

Table 21 Compliance.......................................................................................................... 71

Table 22 Spare Parts and Accessories.......................................................................... 73

Table 23 Default Modbus Serial Communication Settings......................................75

Table 24 Modbus Function Codes..................................................................................75

Table 25 16-bit Signed Integer Format Details...........................................................76

Table 26 Modbus Measurement Data Registers (Read-Only)................................77

Table 27 Modbus Status Registers (Read-Only)........................................................77

Table 28 Error Codes on Modbus Interface.................................................................78

Table 29 Modbus Conﬁguration Data Registers (Writable)................................... 78

Table 30 Modbus Test Registers (Read-Only)........................................................... 80

Table 31 Device Identiﬁcation Objects........................................................................ 80

DMT143 User Guide M211435EN-J

1. About This Document

1.1 Version Information

This manual provides information for installing, operating, and maintaining Vaisala DRYCAPâ

Dewpoint Transmitter DMT143.

Table 1 Document Versions (English)

Document Code Date Description

M211435EN-J February 2019 This manual. Modbus protocol added. Added information about

Vaisala Insight PC software. Removed the TIME command.

Added a cautionary note about changing stainless steel ﬁlter.

Updated section Troubleshooting. Updated section DMT143

Speciﬁcations.

M211435EN-H June 2017 Previous version. DRYCAPâ180S sensor option for DMT143L

added. Analog output accuracy speciﬁcation added. Accuracy

speciﬁcation updated for DMT143L variant with DRYCAPâ

180M sensor. Filter spare part information updated.

M211435EN-G January 2017 New probe model DMT143L (DMT242 replacement with

DRYCAPâ180M sensor) added. SF6 gas selections removed.

1.2 Related Manuals

Table 2 Related Manuals

Document Code Name

M010091EN Vaisala DRYCAP

Handheld Dew Point Meter DM70 User's Guide

M211434EN Vaisala DRYCAP

Dew Point Transmitter DMT143 Quick Guide

M211634EN Nokeval 301/302 Display Wiring Diagram

1.3 Documentation Conventions

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.

WARNING!

Chapter 1 – About This Document

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.

CAUTION!

Note highlights important information on using the product.

Tip gives information for using the product more eciently.

Lists tools needed to perform the task.

Indicates that you need to take some notes during the task.

1.4 Trademarks

Vaisalaâand DRYCAPâare registered trademarks of Vaisala Oyj.

Windowsâis 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.

DMT143 User Guide M211435EN-J

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