Vaisala DMT346 User Manual

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USER'S GUIDE
Vaisala DRYCAP® Dewpo int Transmitters
DMT345 and DMT346
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PUBLISHED BY Vaisala Oyj Phone (int.): +358 9 8949 1
P.O. Box 26 Fax: +358 9 8949 2227 FI-00421 Helsinki Finland
Visit our Internet pages at www.vaisala.com.
© Vaisala 2014 No part of this manual 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 manuals 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 manual are subject to change without prior notice. This manual 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.
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Table of Contents

CHAPTER 1
GENERAL INFORMATION .......................................................................... 13
About This Manual ................................................................. 13
Contents of This Manual ..................................................... 13
Version Information ............................................................. 14
Related Manuals ................................................................. 14
Documentation Conventions ............................................... 14
Safety ....................................................................................... 15
ESD Protection .................................................................... 15
Recycling ................................................................................ 16
Regulatory Compliances ....................................................... 16
EU Declaration of Conformity .............................................. 16
Transmitters with LAN or WLAN Interface .......................... 16
Transmitters with WLAN Interface ...................................... 17
Patent Notice .......................................................................... 17
Trademarks ............................................................................. 17
Software License .................................................................... 18
Warranty .................................................................................. 18
CHAPTER 2
PRODUCT OVERVIEW ................................................................................ 19
Introduction to DMT345 and DMT346 ................................... 19
Basic Features and Options ................................................ 21
Operating Principle .............................................................. 21
Structure of the Transmitter ................................................ 22
Probes and Cooling Set ...................................................... 24
CHAPTER 3
INSTALLATION ............................................................................................ 25
Selecting Location ................................................................. 25
Mounting the Housing ........................................................... 25
Standard Mounting without Moun t ing Pla te ........................ 25
Wall Mounting with Wall Mounting Kit ................................. 26
Mounting with DIN Rail Installation Ki t ................................ 29
Pole Installation with Installation Kit for Pole or Pipeline .... 30
Mounting Rain Shield with Installation Kit ........................... 31
Panel Mounting Frame ........................................................ 31
DMT345 Probe Mounting ....................................................... 33
Installation with Flange ........................................................ 33
DMT346 Probe and Cooling Set Mounting........................... 34
Description of the Cooling Set ............................................. 35
Parts of the Cooling Set ................................................. 36
General Probe and Cooling Set Mount ing Inst ruc ti ons ....... 37
Probe and Cooling Set Mounting with Process Shut
Down .............................................................................. 39
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Probe and Cooling Set Mounting with Process
Running .......................................................................... 39
Removing the Transmitter for Maintenance ................... 39
Wiring ....................................................................................... 40
Cable Bushings ................................................................... 40
Cable Grounding ................................................................. 41
Transmitter Housing Grounding .......................................... 42
Signal and Power Supply W iring ......................................... 42
Connections to a 24 VAC Power Supply ............................. 44
Optional Modules.................................................................... 45
Power Supply Module.......................................................... 45
Installation ...................................................................... 46
Warnings ........................................................................ 47
Galvanic Isolation of Power Supply ..................................... 50
Third Analog Output ............................................................ 50
Installation and Wiring .................................................... 51
Alarm Relays ....................................................................... 52
Installation and Wiring .................................................... 52
Selecting Relay Activatio n Stat e .................................... 52
RS-422/485 Interface .......................................................... 53
Installation and Wiring .................................................... 54
LAN Interface ....................................................................... 58
WLAN Interface ................................................................... 59
Attaching the WLAN Antenna......................................... 60
Data Logger Module ............................................................ 60
8-Pin Connector ................................................................... 62
CHAPTER 4
OPERATION ................................................................................................. 63
Getting Started ........................................................................ 63
Display/Keypad ....................................................................... 64
Basic Display ....................................................................... 64
Graphic History .................................................................... 65
Menus and Navigation ......................................................... 67
Changing the Language ................................................. 68
Rounding Setting ............................................................ 68
Display Backlight Setting ................................................ 68
Display Contrast Setting ................................................. 69
Using Display/Keypad ............................................... 69
Using Serial Line ....................................................... 69
Keypad Lock (Keyguard) ................................................ 69
Menu PIN Lock ............................................................... 70
Factory Settings ................................................................... 70
Display Alarms ..................................................................... 71
Configuring a Display Alarm ........................................... 72
Using Serial Line ............................................................ 73
MI70 Link Program for Data Handling .................................. 75
Serial Line Communication ................................................... 76
User Port Connection .......................................................... 77
User Port Operating Modes ............................................ 77
Service Port Connection ...................................................... 78
Connection Cables ......................................................... 78
Installing the Driver for the USB Cable .......................... 78
Using the Service Port .................................................... 79
LAN Communication .............................................................. 80
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IP Configuration .................................................................. 80
Using Display/Keypad .................................................... 81
Using Serial Line ............................................................ 82
Wireless LAN Configuration ................................................ 83
Using Display/Keypad .................................................... 84
Using Serial Line ............................................................ 85
Communication Protoco l ..................................................... 86
Web Configuration for LAN and WLAN ............................... 86
Terminal Program Settings ................................................. 87
Opening a Serial/USB Connectio n ................................. 88
Opening a Telnet Session (LAN/WLAN) ........................ 89
List of Serial Commands ..................................................... 90
Getting Measurement Message from Serial Line ................ 93
Starting Continuous Outputting ...................................... 93
R ................................................................................ 93
Stopping Continuous Outputting .................................... 93
S ................................................................................ 93
Outputting Reading Once .............................................. 94
Assign an Alias for the SEND Command ...................... 94
Outputting Reading Once From All Transmitters ........... 95
Communicating with a Transmitter in POLL Mode ............. 95
OPEN ............................................................................. 95
CLOSE ........................................................................... 95
Formatting Serial Line Mess age ......................................... 96
FTIME and FDATE......................................................... 96
FST................................................................................. 96
General Settings ..................................................................... 97
Changing Quantities and Units ........................................... 97
Using Display/Keypad .................................................... 97
Using Serial Line ............................................................ 98
FORM ............................................................................. 98
UNIT ............................................................................. 100
Pressure Compensation Setting ....................................... 100
Using Display/Keypad .................................................. 101
Using Buttons on Motherboard .................................... 101
Using Serial Line .......................................................... 102
XPRES and PRES .................................................. 102
Date and Time ................................................................... 103
Using Display/Keypad .................................................. 103
Using Serial Line .......................................................... 103
Data Filtering ..................................................................... 104
FILT .............................................................................. 105
Device Information ............................................................ 106
? ................................................................................... 106
LIGHT ........................................................................... 107
HELP ............................................................................ 108
ERRS ........................................................................... 108
MODS .......................................................................... 108
VERS ........................................................................... 109
Resetting the Device ......................................................... 109
Locking Menu/Keypad Using Serial Line .......................... 109
LOCK ........................................................................... 109
Serial Output Settings .......................................................... 110
Using Display/Keypad ....................................................... 110
Using Serial Line ............................................................... 111
SERI ............................................................................. 111
SMODE ........................................................................ 112
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ADDR ........................................................................... 112
INTV ............................................................................. 113
SDELAY ....................................................................... 113
ECHO ........................................................................... 113
Data Recording ..................................................................... 114
Selecting Data Recording Quantities ................................ 114
DSEL ............................................................................ 114
View Recorded Data .......................................................... 115
DIR ............................................................................... 115
PLAY ............................................................................ 116
Deleting Recorded Files .................................................... 117
UNDELETE .................................................................. 117
Analog Output Settings ....................................................... 118
Changing Output Mode and Range ................................... 118
Analog Output Quantities .................................................. 119
AMODE/ASEL .............................................................. 120
Analog Output Tests .......................................................... 121
ITEST ........................................................................... 121
Analog Output Fault Indication Setting .............................. 122
AERR ............................................................................ 122
Extend Analog Output Range ............................................ 123
Operation of Relays .............................................................. 123
Quantity for Relay Output .................................................. 123
Measurement-Based Relay Output Modes ....................... 123
Relay Setpoints ............................................................ 123
Hysteresis ..................................................................... 125
Relay Indicating Transmitter Error Status ......................... 125
Enabling/Disabling Re lays ................................................. 127
Indication Led Operation ................................................... 127
Setting Relay Outputs........................................................ 127
RSEL ............................................................................ 128
Testing Operation of Relays .............................................. 130
RTEST .......................................................................... 130
Sensor Functions ................................................................. 131
AutoCal .............................................................................. 131
Automatic AutoCal ........................................................ 131
Manual AutoCal ............................................................ 131
Sensor Purge ..................................................................... 132
Starting and Configuring Sensor Purge............................. 133
Using Display/Keypad (Optional) ................................. 133
Using Serial Line .......................................................... 134
PURGE .................................................................... 134
PUR ......................................................................... 134
Sensor Warming ................................................................ 135
CHAPTER 5
MODBUS .................................................................................................... 137
Overview of Modbus Protocol Support .............................. 137
Taking Modbus into Use .................................................... 138
Enabling Serial Modbus ....................................................... 139
Using Display/Keypad (Optional) ...................................... 139
Using Serial Line ............................................................... 139
Enabling Ethernet Modbus .................................................. 140
Using Display/Keypad (Optional) ...................................... 140
Using Serial Line ............................................................... 142
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Diagnostic Modbus Counters ............................................. 143
Viewing Counters Using Display/Keypad .......................... 143
Viewing Counters Using Service Port ............................... 143
Disabling Modbus ................................................................ 144
CHAPTER 6
MAINTENANCE ......................................................................................... 145
Periodic Maintenance .......................................................... 145
Cleaning ............................................................................ 145
Changing the Cooling Set Filter ........................................ 145
Error States ....................................................................... 146
Technical Support ................................................................ 148
Product Returns ................................................................... 148
CHAPTER 7
CALIBRATION AN D ADJU STMENT ......................................................... 149
Calibration ............................................................................. 149
User Calibration and Adjustment ...................................... 149
Opening and Closing Adjustment Mode ........................... 150
Adjustment Information ..................................................... 151
CTEXT and CDATE ..................................................... 151
Two-Point Relative Humidity Adjustment .......................... 152
Using Display/Keypad ....................................................... 152
Using Serial Line ............................................................... 153
FCRH ........................................................................... 153
One-Point Dewpoint Adjustment ........................................ 155
One-Point Dewpoint Adjustment Using Display/Keypad .. 155
One-point Dewpoint Adjustment Using Serial Line ........... 156
Adjusting Temperature ........................................................ 157
Adjusting Temperature Using Display/Keypad ................. 157
Adjusting Temperature Using Serial Line ......................... 158
CT................................................................................. 158
Adjusting Analog Outputs ................................................... 159
Adjusting Analog Outputs Using Display/Keypad ............. 159
Adjusting Analog Outputs Us ing Seri al Line ..................... 160
ACAL ............................................................................ 160
CHAPTER 8
TECHNICAL DATA .................................................................................... 161
Specifications ....................................................................... 161
Performance ...................................................................... 161
Technical Specifications of Optional Modules .................. 166
Power Supply Module .................................................. 166
Analog Output Module ................................................. 166
Relay Module ............................................................... 166
RS-485 Module ............................................................ 167
LAN Interface Module .................................................. 167
WLAN Interface Module ............................................... 167
Data Logger Module..................................................... 167
Spare Parts and Accessories .............................................. 168
Dimensions (mm/inch) ......................................................... 169
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APPENDIX A
EXAMPLE INSTALLATION OF DMT346 .................................................. 171
APPENDIX B
CALCULATION FORMULAS ..................................................................... 173
APPENDIX C
MODBUS REFERENCE ............................................................................. 177
Function Codes..................................................................... 177
Register Map ......................................................................... 178
Data Encoding ................................................................... 178
32-Bit Floating Point Format ......................................... 178
16-Bit Integer Format ................................................... 179
Measurement Data (Read-Only) ....................................... 180
Status Registers (Read-Only) ........................................... 181
Configuration Registers ..................................................... 181
Exception Status Outputs .................................................... 182
Diagnostic Sub-Functions ................................................... 183
Device Identification Objects .............................................. 184
Exception Responses .......................................................... 184
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List of Figures
Figure 1 Transmitter Body ...................................................................... 22
Figure 2 Inside the Transmitter ............................................................... 23
Figure 3 Probes, Cooling Set ................................................................. 24
Figure 4 Standard Mounting ................................................................... 25
Figure 5 Mounting with Wall Mounting Kit .............................................. 26
Figure 6 Dimensions of the Plastic Mounting Plate (mm/inch) ............... 26
Figure 7 Mounting with Metal Wall Mounting Plate ................................ 27
Figure 8 Dimensions of the Metal Mounting Plate (in mm) .................... 28
Figure 9 Mounting with DIN Rail Installation Ki t ..................................... 29
Figure 10 Vertical Pole Installation ........................................................... 30
Figure 11 Horizontal Pole Installation ....................................................... 30
Figure 12 Mounting the Rain Shield with Installation Kit .......................... 31
Figure 13 Panel Mounting Frame ............................................................. 32
Figure 14 Panel Mounting Dimensions (mm/inch) ................................... 32
Figure 15 DMT345 Probe Dimensions (mm/inch) .................................... 33
Figure 16 Flange Installation Kit ............................................................... 33
Figure 17 DMT346 Probe Dimensions (in mm) ........................................ 34
Figure 18 Cooling Set Dimensions (in mm) .............................................. 35
Figure 19 Measurement Ranges with and without the C oo ling F in s ........ 36
Figure 20 Parts of the Cooling Set (Dimensions in mm) .......................... 36
Figure 21 Mounting Flange Dimensions (in mm) ..................................... 37
Figure 22 Installing the Probe through Process Wall ............................... 38
Figure 23 Installing Probe through Thick Walls ........................................ 38
Figure 24 Cable Bushings ........................................................................ 40
Figure 25 Grounding the Screen of Electrical Cable ................................ 41
Figure 26 Screw Terminal Block on the Motherboard .............................. 42
Figure 27 Connections to 24 VAC Power Supply ..................................... 44
Figure 28 Power Supply Module .............................................................. 45
Figure 29 Galvanic Isolation Module ........................................................ 50
Figure 30 Third Analog Output ................................................................. 50
Figure 31 Third Analog Output Selection ................................................. 51
Figure 32 Relay Module ........................................................................... 53
Figure 33 RS-422/485 Module ................................................................. 54
Figure 34 4-Wire RS-485 Bus Conn e c tions, Par t A ................................. 56
Figure 35 2-Wire RS-485 Bus .................................................................. 57
Figure 36 LAN Interface Module ............................................................... 58
Figure 37 WLAN Interface Module ........................................................... 59
Figure 38 Data Logger Module ................................................................. 61
Figure 39 Pinout of the Optional 8-Pin Connector .................................... 62
Figure 40 Basic Display ............................................................................ 64
Figure 41 Graphical Display ..................................................................... 65
Figure 42 Graphical Display with Data Logger ......................................... 66
Figure 43 Main Views ............................................................................... 67
Figure 44 Alarm Limit Shown on Graph Screen ....................................... 71
Figure 45 Display Alarm Active ................................................................ 71
Figure 46 Display Alarms ......................................................................... 72
Figure 47 Modifying an Alarm Limit .......................................................... 73
Figure 48 Service Port Connector and User Port Terminal on the
Motherboard ............................................................................. 76
Figure 49 Connection Example between PC Serial Port and User Port .. 77
Figure 50 Network Interface Menu ........................................................... 81
Figure 51 IP Configuration Menu .............................................................. 81
Figure 52 Wireless LAN Settings .............................................................. 84
Figure 53 Entering Network SSID ............................................................ 84
Figure 54 Selecting the Wireless Network Type ...................................... 84
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Figure 55
Web Configuration Interface for WLAN .................................... 87
Figure 56 Opening a Serial Connection .................................................... 88
Figure 57 Opening a Telnet Connection ................................................... 89
Figure 58 Pressure Set Buttons on Motherboard ................................... 101
Figure 59 Device Information on Display ................................................ 106
Figure 60 Current/Voltage Switches of Output Modules ........................ 118
Figure 61 Measurement-Based Relay Output Modes ............................ 124
Figure 62 FAULT/ONLINE STATUS Relay Output Modes ..................... 126
Figure 63 Relay Availa b i lity..................................................................... 128
Figure 64 Following AutoCal on the Display ........................................... 132
Figure 65 Sensor Purge Settings ............................................................ 133
Figure 66 Performing Sensor Purge ....................................................... 133
Figure 67 Serial Interface Settings ......................................................... 139
Figure 68 IP Configuration ...................................................................... 141
Figure 69 Wireless LAN Settings ............................................................ 141
Figure 70 Communication Protoco l ........................................................ 141
Figure 71 Modbus Counters ................................................................... 143
Figure 72 Error Indicator and Error Message ......................................... 146
Figure 73 Inserting the Sensor in Reference Humidity 1 ........................ 152
Figure 74 Waiting for Readings to Stabilize ............................................ 152
Figure 75 Following Stabilizatio n ............................................................ 155
Figure 76 Proceeding with T Figure 77 Completing T
Adjustment ............................................ 155
d/f
Adjustment .................................................... 156
d/f
Figure 78 Dewpoint Measurement Accuracy Graph DMT345 ................ 161
Figure 79 Dewpoint Measurement Accuracy Graph DMT 346 ................ 163
Figure 80 DMT345/346 Transmitter Body Dimensions .......................... 169
Figure 81 WLAN Antenna Dimensions ................................................... 170
Figure 82 Cooling Set Installation ........................................................... 171
Figure 83 Insulation with Mineral W ool ................................................... 172
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List of Tables
Table 1 Manual Revisions ..................................................................... 14
Table 2 Related Manuals ...................................................................... 14
Table 3 Output Quantities for DMT345 ................................................. 20
Table 4 Optional Output Quantities and for DMT345 ............................ 20
Table 5 Output Quantities for DMT346 ................................................. 20
Table 6 Connecting Twisted Pair Wires to Screw Terminals ............... 55
Table 7 4-Wire (Switch 3: On) ............................................................... 56
Table 8 2-Wire (Switch 3: Off) ............................................................... 57
Table 9 Observation Periods and Res olut io n ........................................ 60
Table 10 Wiring of the Optional 8-Pin Connector .................................... 62
Table 11 Periods for Trend and Max/Min Calculations ........................... 65
Table 12 Graph Information Messages ................................................... 66
Table 13 ALSEL Parameters ................................................................... 74
Table 14 Default Serial Communication Settings for User Port .............. 77
Table 15 Communication Settings for the Service Port .......................... 79
Table 16 IP Settings for the LAN and WLAN Interfaces ......................... 80
Table 17 Wireless LAN Settings .............................................................. 83
Table 18 Measurement Commands ........................................................ 90
Table 19 Formatting Commands ............................................................. 90
Table 20 Data Recording Commands ..................................................... 91
Table 21 Purge Commands .................................................................... 91
Table 22 Autocalibration Commands ...................................................... 91
Table 23 Calibration and Adjustment Commands ................................... 91
Table 24 Setting and Testing the Analog Outputs .................................. 91
Table 25 Setting and Testing the Relays ................................................ 91
Table 26 Other Commands ..................................................................... 92
Table 27 FORM Command Modifiers...................................................... 99
Table 28 Conversion Factors for Pressure Units .................................. 102
Table 29 Filtering Levels ....................................................................... 104
Table 30 Selection of Output Modes ..................................................... 112
Table 31 Relay State Examples ............................................................ 127
Table 32 Supported Modbus Variants ................................................... 137
Table 33 Error Messages ...................................................................... 147
Table 34 Indicator Led Functions .......................................................... 150
Table 35 Dewpoint Specifications DMT345 .......................................... 161
Table 36 Temperature Specifications DMT345 ..................................... 162
Table 37 Relative Humidity Specifications DMT345 ............................. 162
Table 38 Mixing Ratio Specifications DMT345 ..................................... 162
Table 39 Dewpoint Specifications DMT346 .......................................... 162
Table 40 Mixing Ratio Specifications DMT346 ..................................... 163
Table 41 Operating Environment Specifications (Both Models) ........... 163
Table 42 Inputs and Outputs Specifications (Both Models) .................. 164
Table 43 Mechanics Specifications (Both Models) ............................... 165
Table 44 Standard Probe Cable Lengths and Approximate Transmitter
Weight (in kg/lb) ..................................................................... 165
Table 45 Spare Parts and Accessories ................................................. 168
Table 46 Supported Function Codes..................................................... 177
Table 47 DMT345/346 Modbus Register Blocks ................................... 178
Table 48 Measurement Data Registers................................................. 180
Table 49 Status Registers ..................................................................... 181
Table 50 Configuration Parameter Registers ........................................ 181
Table 51 Configuration Flag Registers .................................................. 182
Table 52 Exception Status Outputs ....................................................... 182
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Table 53
Table 54 Modbus Device Identification .................................................. 184
Table 55 Modbus Exception Responses ............................................... 184
Modbus Diagnostics ............................................................... 183
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Chapter 1 _________________________________________________________ General Information
CHAPTER 1

GENERAL INFORM ATION

This chapter provides general notes for the manual and the product.

About This Manual

This manual provides information for installing, operating, and maintaining Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346.

Contents of This Manual

This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the manual
and the product.
- Chapter 2, Product Overview, introduces the features and advantages
of the Vaisala DRYCAP® Dewpoint Transmitters DMT345 and
DMT346.
- Chapter 3, Installation, provides you with information that is intended
to help you install this product.
- Chapter 4, Operation, contains information that is needed to operate
this product.
- Chapter 5, Modbus, contains information that is needed when
operating the transmitter using the Modbus protocol.
- Chapter 6, Maintenance, provides information that is needed in basic
maintenance of the product. Possible error states and situations, their
probable causes and remedies are described in this chapter. This
chapter also contains contact information for Vaisala Technical
Support.
- Chapter 7, Calibration and Adjustment, provides you with instructions
on how to calibrate and adjust Vaisala DRYCAP® Dewpoint
Transmitters DMT345 and DMT346.
- Chapter 8, Technical Data, provides the technical data of the product.
- Appendix A, Example Installation of DMT346, illustrates an example
installation of DMT346 transmitter into a process.
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Manual Code
Description
M210726EN-G
June 2014. This manual. Added Sensor Saturation
completing T
d/f
adjustment, small corrections.
M210726EN-F
December 2013. Previous vers io n. Added new
small corrections.
M210726EN-E
Applicable from transmitter software version 5.10
temperature range.
Manual Code
Manual Name
M010091EN
Vaisala DRYCA P® Hand-Held Dewpoint Meter DM70 User's Guide
M210185EN
Humidity Calibrator HMK15 User's Guide
Warning alerts you to a serious hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury death.
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.
- Appendix B, Calculation Formulas, contains the formulas used for the calculated output quantities.
- Appendix C, Modbus Reference, describes the Modbus functions and data of the transmitter.

Version Information

Table 1 Manual Revisions
Rate (SSR) and Sensor Temperature (Ts) to the list of Modbus registers, corrected the screenshot in
command descriptions: ALSEL, AOVER, CON, DSEND, and MODS. Updated FILT command description. Updated technical specification. Various
onward. Added Modbus protocol. Updated serial line command descriptions. Updated storage
WARNING
CAUTION

Related Manuals

Table 2 Related Manuals

Documentation Conventions

Throughout the manual, important safety considerations are highlighted as follows:
or even
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Chapter 1 _________________________________________________________ General Information
Note highlights important information on using the
Ground the product, and verify outdoor installation grounding periodically to minimize shock hazard.
Do not modify the unit. Improper modification can damage the product, lead to malfunction, or make the product noncompliant with applicable legislation.
NOTE

Safety

WARNING
CAUTION
product.
The DMT345/346 Dewpoint and Temperature Transmitter delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions:

ESD Protection

Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against ESD for their intended use. However, it is possible to damage the product by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages yourself:
- Handle ESD sensitive components on a properly grounded and protected ESD workbench. When this is not possible, ground yourself to the equipment chassis before touching the boards. Ground yourself with a wrist strap and a resistive connection cord. When neither of the above is possible, touch a conductive part of the equipment chassis with your other hand before touching the boards.
- Always hold the boards by the edges and avoid touching the component contacts.
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Recycle all applicable material.
Dispose of the unit according to statutory regulations. Do not dispose of with regular household refuse.

Recycling

Regulatory Compliances

EU Declaration of Confo rmity

Vaisala DRYCAP® Humidity and Temperature Transmitters DMT345 and DMT346 are in conformity with the provisions of the following EU directives:
- Low Voltage Directive
- EMC-Directive Conformity is shown by compliance with the following standards:
- EN 60950-1
- EN 61326-1: Electrical equipment for measurement, control, and laboratory use – EMC requirements – for use in industrial locations.
- EN 550022: Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement.

Transmitters with LAN or WLAN Interfa ce

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
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Chapter 1 _________________________________________________________ General Information
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

Transmitters with WLAN Interface

This device has been designed to operate with a 2 dBi half-wave antenna. Antennas with a gain greater than 2 dBi are prohibited for use with this device. The antenna impedance is 50 ohms.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication.
This Class [B] digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe [B] est conforme à la norme NMB-
003 du Canada.

Patent Notic e

Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346 are protected by, for example, the following patents and their corresponding national rights:
Finnish patents 98861 and 99164, French patents 6650303 and 9504397, German patents 69418174 and 19513274, Japanese patents 3585973 and 2801156, UK patents 0665303 and 2288465, and U.S. patent 5607564.

Trademarks

DRYCAP® is a registered trademark of Vaisala Oyj. All other trademarks are the property of their respective owners.
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Software License

This product contains software developed by Vaisala. 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.

Warranty

Visit our Internet pages for standard warranty terms and conditions:
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.
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Chapter 2 ___________________________________________________________ Product Overview
CHAPTER 2

PRODUCT OVERVIE W

This chapter introduces the features and advantages of the Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346.

Introduction to DMT345 and DMT346

The DMT345 and DMT346 transmitters incorporate the advanced Vaisala DRYCAP® technology, which enables reliable and accurate dewpoint measurement. Both transmitters also feature the AutoCal function which provides excellent long term stability of the measurement.
The DMT345 is designed for measurement of relative humidity in temperatures up to 180 °C. The transmitter outputs dewpoint/frostpoint (Td/f), mixing ratio (x), volume concentration (ppm), relative humidity (RH), and temperature (T).
The DMT346 is a high-performance instrument for measurement of dewpoint and mixing ratio in temperatures up to 350 °C.
DMT346 also outputs sensor saturation rate (SSR) and temperature (TS = T sensor is cooled, these values do not represent true process conditions, hence they cannot be used for process control. Nevertheless, they provide a valuable aid for calibration and for checking the cooling effect.
For quantities measured by DMT345, see Table 3 on page 20. For the optional calculated quantities measured by DMT345, see Table 4 on page
20.
For quantities measured and calculated by DMT36, see Table 5 on page
20.
) of the cooled Vaisala DRYCAP® sensor. Because the
Sensor
VAISALA ________________________________________________________________________ 19
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User's Guide _______________________________________________________________________
Quantity
Abbreviation
Metric Unit
Non-Metric Unit
Dewpoint/frost point temperature (T
d/f
)
TDF
ºC
ºF
Mixing ratio (x)
X
g/kg
gr/lb
Relative humidity RH
RH
%RH
%RH
Temperature T
T
ºC
ºF
Quantity
Abbreviation
Metric Unit
Non-Metric Unit
Parts per million
H2O
ppmv/ ppmw
ppmv/ ppmw
Absolute humidity (a)
A
g/m3
gr/ft3
Absolute humidity in standard pressure and temperature (NTP)
ANTP
g/m3
gr/ft3 Wet bulb temperature (Tw)
TW
ºC
ºF
Water vapor pressure (Pw )
PW
hPa
lb/in2
Water vapor saturation pressure (Pws)
PWS
hPa
lb/in2
Enthalpy (h)
H
kJ/kg
Btu/lb
Difference of T and T
d/f
(∆T)
DT
ºC
ºF
Quantity
Abbreviation
Metric Unit
Non-Metric Unit
Dewpoint temperature (T
d/f
)
TDF
ºC
ºF
Mixing ratio (x)
X
g/kg
gr/lb
Sensor saturation rate
SSR
% - Sensor temperature
TS
ºC
ºF
Table 3 Output Quantities for DMT345
Table 4 Optional Output Quantities and for DMT345
Table 5 Output Quantities for DMT346
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Chapter 2 ___________________________________________________________ Product Overview

Basic Features an d Options

- Dewpoint measurement with AutoCal and sensor purge features
- Sensor warming in high humidities
- Two analog outputs and a serial interface, optional third analog output
- Installation accessories
- DMT345: mounting flange
- DMT346: cooling set for high temperature applications.
- User friendly display and keypad interface (optional)
- Different sensor protection options and probe cable lengths
- Support for Modbus serial communications protocol
- USB connectivity for service connections via the optional USB-RJ45 cable
- Optional modules:
- Galvanic isolation for outputs
- Power supply module for AC mains power
- RS-422/485-module
- LAN and WLAN interfaces
- Data logger module with real time clock
- Additional analog output module
- Alarm relay module

Operating Principle

The DMT345/346 transmitter incorporates the Vaisala DRYCAP® sensor together with a combined temperature measurement with a PT100 resistive temperature sensor. The operating principle of the DRYCAP® sensor is based on the changes in capacitance as its thin polymer film absorbs water molecules.
The DMT345/346 transmitter measures water vapor directly and gives thus accurate results of moisture in the process. In DMT346, the sensor is cooled down with a cooling set which makes it possible to use a polymer sensor in very high temperatures, for example, +100 ... +350 °C. With this technique, no complicated sampling systems are needed. The cooling set is thermally isolated from the process itself. The temperature of the sensor is cooled down which increases the sensor saturation rate.
Sensor saturation rate and temperature are then measured, and the transmitter calculates the dewpoint and the mixing ratio on the basis of those readings.
Note that for DMT346, SSR and temperature values do not represent the process itself as they are measured after cooling. Dewpoint and mixing ratio, however, are independent of temperature and remain unchanged.
The dewpoint measurement range is -25 ... +100 °C.
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 1 above:
1 = Signal + powering cable gland
2 = Cable gland for optional module, or WLAN antenna connector
3 = Cable gland for optional module or AC mains cable
4 = Cover screw (4 pcs)
5 = Display with keypad (optional)
6 = Cover LED

Structure of the Transmitter

1104-001
Figure 1 Transmitter Body
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Chapter 2 ___________________________________________________________ Product Overview
The following numbers refer to Figure 2 above:
1 = Service port (RS-232)
2 = Dip switches for analog output settings
3 = Power supply and signal wiring screw terminals
4 = Relay, data logger, RS-422/485, LAN, or WLAN module (optional)
5 = Grounding connector
6 = Power supply module (optional)
7 = Relay, data logger, or analog output module (optional)
8 = Dewpoint probe
9 = Galvanic isolation module (optional)
10 = Adjustment button and Manual AutoCal buttons with indicator LED and pressure set buttons.
0604-006
Figure 2 Inside the Transmitter
VAISALA ________________________________________________________________________ 23
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User's Guide _______________________________________________________________________
*) = Optional mounting flange for DMT345 probe

Probes and Cooling Set

0604-007
Figure 3 Probes, Cooling Set
Figure 3 above shows from left to right: DMT345 probe, DMT346 probe and the cooling set. For probe cable lengths, see Table 44 on page 165.
24 ___________________________________________________________________ M210762EN-G
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Chapter 3 ________________________________________________________________ Installation
CHAPTER 3

INSTALLATION

This chapter provides you with information that is intended to help you install this product.

Selecting Location

Finding a suitable site for the dewpoint measurement probe is important for getting representative process or environmental measurements. The location of the probe should provide a good representation of the area of interest. Also select a location that is as clean as possible. Air should circulate freely around the sensor.

Mounting the Housing

The housing can be mounted either without the mounting plate or with optional mounting plates.

Standard Mounting witho ut Mount ing Plate

Mount the housing without the mounting plate by fastening the transmitter to the wall with 4 screws, for example, M6 (not provided).
0804-066
Figure 4 Standard Mounting
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 5 above:
1 = Plastic mounting plate
2 = Mount the plate to wall with 4 screws M6 (not provided)
3 = Arched side up
4 = Fasten the transmitter to the mounting plate with 4 fixing screws M3 (provided)
5 = Holes for wall/junction box mounting
183 (7.20)
133 (5.24)
116 (4.57)
104 (4.09)
84 (3.30)
59 (2.32)
59 (2.32)
Ø6.2 (0.24)
4.5 (0.18)
10.5 (0.41)
6.5 (0.26)
8.5 (0.33)
Thickness
9.5 (0.37)

Wall Mounting with Wall Mounting Kit

When mounting with wall mounting kit the mounting plate (Vaisala order code: 214829) can be installed directly on wall or onto a standard wall box (also US junction box). When wiring through back wall, remove the plastic plug from the wiring hole in the transmitter before mounting.
0604-009
Figure 5 Mounting with Wall Mounting Kit
Figure 6 Dimensions of the Plastic Mounting Plate (mm/inch)
26 ___________________________________________________________________ M210762EN-G
0804-065
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Chapter 3 ________________________________________________________________ Installation
The following numbers refer to Figure 7 above:
1 = Mount the plate to wall with 4 screws M8 (not provided)
2 = Fasten the transmitter to the mounting plate with 4 fixing screws M6 (provided)
3 = Note the position of the arrow when mounting. This side must be up when mounting.
Metal mounting plate is included in rain shield with installation kit and installation kit for pole or pipeline.
0604-011
Figure 7 Mounting with Metal Wall Mounting Plate
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User's Guide _______________________________________________________________________
0604-012
Figure 8 Dimensions of the Metal Mounting Plate (in mm)
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Chapter 3 ________________________________________________________________ Installation

Mounting with DIN Rail Installation Kit

DIN rail installation kit includes a wall mounting kit, 2 clip-fasteners and 2 screws M4 × 10 DIN 7985 (Vaisala order code: 215094).
1. Attach two spring holders to the plastic mounting plate by using the
screws provided in the installation kit.
2. Fasten the transmitter to the plastic mounting plate with 4 screws
(provided).
3. Press the transmitter onto the DIN rail so that the clip-fasteners
snap into the rail.
0604-013
Figure 9 Mounting with DIN Rail Installation Kit
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 10 above:
1 = U-bolts (2 pcs) M8 (provided) for 30 ... 102 mm poles.
2 = Mounting nuts M8 (4 pcs)
The following numbers refer to Figure 11 above:
1 = Mounting nuts M8 (4 pcs)

Pole Installation with Installation Kit for Pole or Pipeline

Installation kit for pole or pipeline (Vaisala order code: 215108) includes the metal mounting plate and 4 mounting nuts for pole mounting. When mounting, the arrow in the metal mounting plate must point upward, see Figure 7 on page 27.
0604-014
Figure 10 Vertical Pole Installation
0604-015
Figure 11 Horizontal Pole Installation
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Chapter 3 ________________________________________________________________ Installation
The following numbers refer to Figure 12 above:
1 = Fasten the rain shield with the installation kit (Vaisala order code: 215109) to the metal mounting plate with 2 (M6) mounting screws (provided)
2 = Fasten the mounting plate with rain shield with installation kit to the wall or to the pole (see pole installation)
3 = Fasten the transmitter to the mounting plate with 4 fixing screws (provided)

Mounting Rain Shield with Inst a lla t ion Kit

The rain shield is highly recommended for outdoor installations, especially for transmitters with the display/keypad option.
0604-016
Figure 12 Mounting the Rain Shield with Installation Kit

Panel Mounting Frame

To enable a neat and dirt free embedded installation of the transmitter, a panel mounting frame is available as an option (Vaisala order code:
216038). The frame is a thin, flexible plastic frame for the transmitter,
with adhesive tape on one side. The frame is used to hide any rough edges of the installation hole, and
provide a more finished look. Note that the panel mounting frame is not intended to bear the weight of the transmitter, and does not include any mounting supports.
Use the panel mounting frame as follows:
1. Use the frame as a template to mark the required size for the
installation hole in the panel.
2. Cut the hole in the panel.
3. Mount the transmitter through the panel with suitable supports.
4. Remove the paper protecting the adhesive tape on the frame, and
attach the frame around the transmitter. Refer to Figure 13 on page
32.
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 13 above:
1 = Panel (not included)
2 = Panel mounting frame
0704-002
Figure 13 Panel Mounting Frame
0804-083
Figure 14 Panel Mounting Dimensions (mm/inch)
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Chapter 3 ________________________________________________________________ Installation
The following numbers refer to Figure 16 above:
1 = Process or duct wall
2 = Flange
3 = Sealing ring
4 = Probe

DMT345 Probe Mounting

0604-018
Figure 15 DMT345 Probe Dimensions (mm/inch)

Installation with Flange

The DMT345 is a small size (d = 12 mm) general purpose probe suitable for installation through process or duct walls with the flange installation kit available from Vaisala.
The duct installation kit includes a flange, a sealing ring and screws for attaching the flange to the process or duct wall (Vaisala order code:
210696).
0604-019
Figure 16 Flange Installation Kit
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User's Guide _______________________________________________________________________
When the temperature difference between the process or duct and the surroundings is large, the probe must be or duct as possible. This prevents errors caused by heat conduction in the probe cable.
When the DMT345/346 is installed in a process with a pressure differing from the selected operating pressure at the time of orde please enter the pressure value of the process into the transmitter memory.
-
-
-
­Se
using
The following numbers refer to Figure 17 above:
1 = Stainless steel grid
2 = Cable (length 2 m, 5 m or 10 m)
22.5
ø1
334.5
ø13.5
357
1 2
NOTE
installed as deep in the process
NOTE
ring,
You can enter the value in the following ways:
using the display/keypad option using the buttons on the motherboard using the serial line using the Modbus protocol
e section Pressure Compensation Setting on page 100. If you are
Modbus, see section Configuration Registers on page 181.

DMT346 Probe and Cooling Set Mounting

0604-020
Figure 17 DMT346 Probe Dimensions (in mm)
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Chapter 3 ________________________________________________________________ Installation
Make sure that the upper limit of the dewpoint measurement range is not exceeded in low temperatur
304
164
112.5
15
8
27.5
ø20
125
ø105
ø118
ø28
120
40.6
mounting flange
sintered filter
ø88.9
(fixed on top of the cooling set)
cooling element
cooling fins

Description of the Cooling Set

Figure 18 Cooling Set Dimensions (in mm)
The cooling set consists of a cooling element and removable cooling fins. The cooling fins are meant to be installed in applications where the process temperature and dewpoint are continuously in the range indicated in Figure 19 on page 36 (Measurement Ranges with and without the Cooling Fins). However, if there is a possibility that the dewpoint is above this range, the measurements have to be taken without the cooling fins in order to avoid condensation.
The flow rate and ambient temperature have an effect on the cooling rate. In Figure 19 on page 36, it is assumed that ambient temperature is +25 °C. When ambient temperature is raised by +10 °C, the measurement ranges with and without cooling fins rise approximately +6 °C. Correspondingly, every -10 °C change in ambient temperature changes the ranges by approximately -6 °C. It is recommended that after installing the transmitter without the cooling fins, the transmitter is allowed to stabilize and then the SSR reading is checked either from the local display or with a terminal connected to an RS line. If the SSR reading is below 20 %, it is recommended that the cooling fins are installed.
NOTE
es as this would lead to condensation.
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User's Guide _______________________________________________________________________
flange
flange
15° 22 172
A
A
SECTION
A-A
cooling bush
screen tube
104.5
cooling profile
M6×60 DIN912 (AISI 316)
15
ø76
cooling bar
ø28
ø118
ø105
NOTE
When measuring temperature-dependent quantities, make sure that the temperature at the measurement point is equal to that of the process; otherwise, the moisture reading may be incorrect.
0604-022
Figure 19 Measurement Ranges with and without the Cooling
Parts of the Cooling Set
0604-023
Figure 20 Parts of the Cooling Set (Dimensions in mm)
Fins
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Chapter 3 ________________________________________________________________ Installation
lengthening piece (pipe)
max. 50 125 8
2
ø105
ø88.9
ø84.9
ø118
welding mounting
pipe
M6×16 DIN912 (AISI 316)
0605-023
Figure 21 Mounting Flange Dimensions (in mm)

General Probe and Cooling Set Mounting Instructions

NOTE
Follow these general mounting instructions to make the installation. Note the additional instructions in the following sections regarding specific situations (mounting with process shut down, mounting with process running, removing the transmitter for maintenance).
Appendix A, Example Installation of DMT346 on page 171 provides photographs of installating DMT346 transmitter through a process wall.
The probe should be installed horizontally whenever possible in order to ensure the best possible performance of the cooling set. Install the probe according to the following instructions (see also Figure 22 on page 38):
1. Make a round 89.5 + 0.5 mm hole on the process wall.
2. Weld the tube of the mounting flange tightly on the inner metal
plate of the process wall. If the process wall is more than 125 mm thick, a lengthening piece (max. 50 mm) can be welded on the mounting tube (for walls thicker than 175 mm, see Figure 23 on page 38).
3. The cooling set is mounted in a vertical position. Tighten the
screws properly in order to ensure a thermal contact.
4. Unfasten the locking screws on the cooling bar so that you can
push the probe into the bar.
Push the probe deep enough: make sure that the marking hole meets the end of the bar.
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120
cooling bar
sealing material (for example, mineral wool)
PROCESS (t
max
= 350 °C)
mounting flange
to be welded
cooling sleeve
ø89.5 + 0.5
DRYCAP
®
sensor
O-ring FPM
protective tube
channel with mineral wool
125
(max. 175 mm)
PROBE
cooling fins
locking screws of the probe M4×6 DIN 916 (AISI 316)
marking hole
8
40.6
to be welded
ø89.5 + 0.5
lengthening piece
inner plate of the process wall
wall thickness
< 160
plate ring plate pipe
the flange is fixed with screws or by spot welding
cooling profile
~45º
ø118
NOTE: Make sure that the cooling profile does not cover the locking screws
5. Lock the probe in place by tightening the locking screws on the bar.
38 ___________________________________________________________________ M210762EN-G
0604-024
Figure 22 Installing the Probe through Process Wall
0604-025
Figure 23 Installing Probe through Thick Walls
Page 39
Chapter 3 ________________________________________________________________ Installation
Probe and Cooling Set Mounti ng w ith Process Shut Down
Complete the entire mounting process as instructed on page 37.
Probe and Cooling Set Mounti ng w ith Process Running
Follow this procedure to reduce the amount of condensation that builds up in the installation hole.
1. First mount the cooling element (and fins) to warm it up; tightly
plug the hole for the probe in the cooling element for the duration of the warmup period.
2. After a few hours, complete the installation by installing the probe.
Removing the Transmitter f or Mai ntena nc e
If you remove the transmitter from the process to send it to service etc., leaving the cooling set in its place, make sure you plug tightly the hole for the probe in the cooling element. This will lessen the amount of condensation that builds up in the hole.
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 24 above:
1 = Cable for signal/powering Ø8 ... 11 mm
2 = Cable for optional module Ø8 ... 11 mm
3 = Cable for optional power module Ø8 ... 11 mm
When there is high electric noise level (for example near powerful electric motor) in the operating shielded cable or take care that the signal cables are separated from other cables.

Wiring

Cable Bushings

A single electrical cable with a screen and three to ten wires is recommended for power and analog/serial connections. The cable diameter should be 8 ... 11 mm. The number of cable bushings depends on the transmitter options. See the following recommendations for the cable bushings:
NOTE
0605-026
Figure 24 Cable Bushings
environment it is recommended to use
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Chapter 3 ________________________________________________________________ Installation

Cable Grounding

Ground the screen of the electrical cable properly to achieve the best possible EMC performance.
0605-027
Figure 25 Grounding the Screen of Electrical Cable
Refer to Figure 25 above when performing the procedure below.
1. Cut back outer sheath to desired length.
2. Cut back screen braiding or screen foil to dimension X.
3. Push the domed cap nut (item 1) and the seal insert with contact
socket of the gland (items 2 & 3) onto the cable as shown in the diagram.
4. Bend over the screen braiding or screen foil by about 90º (item 4).
5. Push the seal insert with the contact socket of the gland
(items 2 & 3) up to the screen braiding or screen foil.
6. Mount the lower part (item 5) on the housing.
7. Push the seal with the contact socket of the gland (item 2 & 3) into
the lower part (item 5).
8. Install the domed cap nut (item 1) onto the lower part (item 5).
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 26 above:
1 = Supply terminals POWER 10 ... 35 VDC = 24 V~
2 = User port (RS-232 terminals)
3 = Analog signal terminals
Make sure that you connect only de

Transmitter Housing Grounding

In case you need to ground the transmitter housing, the grounding connector is found inside the housing; see Figure 1 on page 22. Note anyhow that the probe is connected to the same potential as the housing. Make sure that different groundings are made to the same potential. Otherwise harmful ground currents may be generated.
If it is needed to have galvanic isolation of the power supply line from the output signals, DMT345/346 can be ordered with optional galvanic isolation module. This module prevents harmful grounding loops.

Signal and Power Supply Wiring

When connecting transmitter with 8-pin connector, see section 8-Pin Connector on page 62.
0605-028
Figure 26 Screw Terminal Block on the Motherboard
WARNING
42 ___________________________________________________________________ M210762EN-G
-energized wires.
Page 43
Chapter 3 ________________________________________________________________ Installation
1. Open the transmitter cover by taking out the four cover screws.
2. Insert the power supply wires and signal wires through the cable
bushing in the bottom of the transmitter; see the grounding instructions in the previous sections.
3. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+,
Ch2-. Connect the RS-232 user port cables to terminals RxD, GND and TxD. See section User Port Connection on page 77.
4. When wiring the optional modules, see the corresponding section
for instructions:
- Installation and Wiring of RS-422/485 Interface on page 54
- Installation and Wiring of Alarm Relays on page 52
- Third Analog Output on page 50
- LAN Interface on page 58
- WLAN Interface on page 59
5. Connect the power supply wires to the connectors:
POWER 10 ... 35 V = 24 V∼ (+) and (–) terminals. ( If using AC voltage, always connect phase (~) to power supply (+) and 0 to power supply (–) ). When wiring the power supply module, see section Power Supply Module on page 45.
6. Turn on the power. The indicator LED on the cover is lit
continuously during normal operation.
7. Close the cover and replace the cover screws. The transmitter is
ready for use.
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User's Guide _______________________________________________________________________
24
To prevent fire and/or damage, if either 24 connected to a " must connect the same wire on the "

Connections to a 24 VAC Power Supply

Separate floating supply for each transmitter is recommended (see the upper part of Figure 27 on page 44). If you have to connect several transmitters or other instruments to one AC supply, the phase (~) must always be connected to the (+) connector of each transmitter (see the lower part of Figure 27).
CAUTION
VAC POWER SUPPLY USE
VAC wire is grounded or
-", "0", or "GND" terminal of any other device, you
-" terminal also on this instrument.
Figure 27 Connections to 24 VAC Power Supply
44 ___________________________________________________________________ M210762EN-G
0703-041
Page 45
Chapter 3 ________________________________________________________________ Installation
The following numbers refer to Figure 28 above:
1 = Connect AC mains voltage wires to these terminals
2 = Grounding terminal
3 = In case the module is not installed in the factory: Connect wires from these terminals to the
terminals of
the motherboard.
4
= + 5
=

Optional Modules

Power Supply Module

The mains power connection may be connected to the power supply module only by an authorized electrician. A readily accessible disconnect device shall be incorporated in the fixed wiring.
0605-030
Figure 28 Power Supply Module
POWER 10 ... 35V 24V
VAISALA ________________________________________________________________________ 45
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User's Guide _______________________________________________________________________
Do not detach the power supply module from the transmitter when the power is on.
Do not connect the mains power to power supply module when it is not installed in the transmitter.
Always connect protective ground terminal.
Installation
1. Disconnect the power.
2. Remove the protective plug from the cable gland and thread the wires. In case the power supply module is installed in the factory, continue with the step 5.
3. To attach the module, open the transmitter cover and fasten the power module to the bottom of the housing with four screws. See the position of the power module in Figure 2 on page 23.
4. Connect the wires from the terminals of the power supply module marked with + and – to the terminals POWER 10 ... 35V = 24 V~ on the motherboard of the transmitter.
5. Connect the AC mains voltage wires to the power supply module terminals marked with N and L.
6. Attach the grounding wire to the grounding terminal on the right­hand side of the transmitter.
7. Connect the power. The LED on the cover of the transmitter is lit continuously during normal operation.
WARNING
WARNING
WARNING
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Chapter 3 ________________________________________________________________ Installation
Warnings
Dieses Produkt entspricht der Niederspannungsrichtlinie (2006/95/EWG).
- Das Netzmodul darf nur von einem dazu befugten Elektriker angeschlossen werden.
- Trennen Sie das Netzmodul nicht vom Messwertgeber, wenn der Strom eingeschaltet i st.
- Verbinden Sie das Netzmodul nur mit der Spannungsquelle, wenn es im Messwertgeber
DMT345/346 montiert ist.
- Das Erdungskabel muss zum Schutz immer angeschloss en sein.
Ce produit est conforme à la Directive relative à la Basse Tension (2006/95/EEC).
- Seul un électricien compétent est habilité à racco rder le module d’alimentation au secteur.
- Ne pas détacher le module d’alimentation du tran smetteur lorsqu’il est en service.
- Ne pas raccorder le secteur au module d’alimentation lorsque celui-ci n’est pas i nstallé dans le
transmetteur DMT345/346.
- Toujours raccorder un bornier de protection à la terre.
Tämä tuote on pienjännitedirektiivin (2006/95/EEC) mukain e n.
- Vaihtovirtaliitännän saa kytkeä tehonsyöttömoduuliin ainoastaan valtuutettu sähköasentaja
- Älä irrota tehonsyöttömoduulia lähettimestä, kun virta on kytkettynä.
- Älä kytke verkkovirtaa tehonsyöttömoduuliin, jos kyseistä moduulia ei ole asennettu
DMT345/346 lähettimeen.
- Kytke aina maadoitusliittimet.
Denna produkt uppfyller kraven i direktivet om lågspänning (2006/95/EEC).
- Nätanslutningen (växelströmsanslutningen) får bara anslutas till strömförsörjningsmodulen av
en behörig elektriker.
- Ta inte loss strömförsörjningsmodulen från mätaren när strömmen är på.
- Anslut inte strömförsörjningsmodulen till nätet när den inte är installerad i DMT345/346-
mätaren
- Anslut alltid en skyddande jordningsplint.
Questo prodotto è conforme alla Direttiva sul basso voltaggio (2006/95/CEE).
- La conduttura elettrica può essere collegat a al modulo di alimentazione elettrica soltanto da
un elettricista au to r izzato.
- Non staccare l’al imentazione elettrica dal trasmettitore quando è acceso.
- Non collegare la corrente elettrica al modu lo di alimentazione elettrica se non è installato nel
trasmettitore DMT345/346.
- Collegare sempre il morsetto protettivo a terra!
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Dette produkt er i overensstemmelse med dire ktivet om lavspænding (2006/95/EØS).
- Netstrømskoblingen til må kun tilsluttes strømforsyningsmodulet af en autoriseret elinstallatør
- Strømforsyningsmodulet må ikke løsgøres fra senderen, mens spændingen er sluttet til.
- Slut ikke netspændingen til strømforsyningsmodulet, når det ikke er installeret i
DMT345/346- senderen
- Forbind altid den beskyttende jordklemme!
Dit product voldoet aan de eisen van de richtlijn 2006/95/EEG (Laagspanningsrichtlijn).
- De stroom kan aan de stroomtoevoer module aangesloten worden alleen door een bevoegde
monteur.
- Het is niet toegestaan de stroomtoevoer modul e van de transmitter los te koppelen wanneer de
stroom aan is.
- Het is niet toegestaan de stroom aan de stroomtoevoer module aan te sluiten als deze niet in
een DMT345/346-transmitter is gemonteerd.
- Altijd beschermend aard contact aansluiten !
Este producto cumple con la directiva de bajo voltaje (2006/95/EEC).
- La conexión de la alimentación principal al módulo de alimentación sólo puede realizarla un
electricista autorizado.
- No desenchufe el módulo de alimentación del transmisor cuando esté encendido.
- No conecte la alimentación principal al módulo d e alimentación cuando no esté instalado en
el transmisor DMT345/346.
- Conecte siempre el terminal de protección de con exi ón a tierra.
See toode vastab madalpinge direktiivile (2006/95/EEC).
- Voolukaabli võib vooluallika mooduli külge ühendada ainult volitatud elektrik.
- Ärge ühendage vooluallika moodulit saatja küljest lahti, kui vool on sisse lülitatud.
- Ärge ühendage voolukaablit vooluallika mooduli külge, kui seda pole DMT345/346-tüüpi
saatjasse paigaldatud.
- Ühendage alati kaitsev maandusklemm!
Ez a termék megfelel a Kisfeszültségű villamos termékek irányelvnek (2006/95/EGK).
- A hálózati feszültséget csak feljogosított elektrotechnikus csatlakoztathatja a
tápegységmodulra.
- A bekapcsolt távadóról ne csatolja le a tápegységmodult.
- Ne csatlakoztassa a háló zati feszültséget a tápegységmodulhoz, ha az nincs beépítve a
DMT345/346 távadóba.
- Feltétlenül csatlakoztasson földelő védőkapcsot!
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Chapter 3 ________________________________________________________________ Installation
Šis produktas atitinka direktyvą dėl žemos įtampos prietaisų (2006/95/EB).
- Elektros tinklą su energijos tiekimo moduliu sujungti gali tik įgaliotas elektrikas.
- Niekada neišimkite energijos tiekimo modulio iš siųstuvo, kai maitinimas yra įjungtas.
- Jei energijos tiekimo modulis nėra įmontuotas DMT345/346 siųstuve, nejunkite jo į elektros
tinklą.
- Visada prijunkite prie apsauginės įžeminimo jungties!
Šis produkts atbilst Zemsprieguma direktīvai (2006/95/EEC).
- Strāvas pieslēgumu var pieslēgt pie barošanas avota moduļa tikai autorizēts elektriķis.
- Neatvienot barošanas avota moduli no raidītāja, kad pieslēgta strāva.
- Nepievienot strāvu barošanas avota modulim, ja tas nav uzstādēts DMT345/346 raidītājā
- Vienmēr pievienot aizsargājošu iezemētu terminālu !
Ten produkt spełnia wymogi Dyrektywy niskonapięciowej (2006/95/EEC).
- Napięcie zasilające powinno zostać podłączone do modułu zasilacza tylko przez
wykwalifiko w a nego elektryka.
- Nie wolno odłączać modułu zasilacza od nadajnika, kiedy zasilanie jest włączone.
- Nie wolno podłączać napięcia zasilającego do modułu zasilacza, kiedy nie jest on
zamontowany w nadajniku DMT345/346.
- Zawsze należy podłączać zabezpieczający zacisk uziemiający!
Tento výrobek vyhovuje Směrnici pro nízké napětí (2006/95/EEC).
- Připojení síťového napájení k napájecímu modulu smí provádět pouze oprávněný elektrikář.
- Neodpojujte napájecí modul od snímače při zapnutém napájení.
- Nepřipojujte síťové napájení k napájecímu modulu, pokud není instalován ve snímači
DMT345/346.
- Vždy zapojte ochrannou zemnící svorku!
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Galvanic supply module. Note also that these two modules are physically incompatible installed, there is no room to close the transmitter cover completely.
The following numbers refer to Figure 30 above:
1 = Flat cable pins
2 = Screw terminals for signal line
3 = DIP switches to select the output mode and range

Galvanic Isolation of Power Supply

If galvanic isolation of the power supply line from the output signals is needed, DMT345/346 can be ordered with optional galvanic isolation module. This module prevents harmful grounding loops.
NOTE
isolation module is not needed when using the AC power
to be installed at the same time. If both modules are
0605-031
Figure 29 Galvanic Isolation Module

Third Analog Output

0503-030
Figure 30 Third Analog Output
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Installation and Wiring
1. Disconnect the power. In case the analog output module is installed
in the factory, continue with the step 4.
2. Open the transmitter cover and and fasten the analog output module
to the position for MODULE 2 with four screws. Refer to Figure 2 on page 23.
3. Connect the flat cable between the analog output module and the
motherboard's connector for MODULE 2.
4. Take out the protective plug from the cable gland and thread the
wires.
5. Connect the wires to the screw terminals marked with Ch+ and
Ch- .
6. Select the current/voltage output by setting ON either of the
switches 1 or 2.
7. Select the range by setting ON one of the switches 3 ... 7.
NOTE
Only one of the switches 1 … 2 can be ON at a time. Only one of the switches 3 ... 7 can be ON at a time.
0508-029
Figure 31 Third Analog Output Selection
8. Connect the power.
9. Select the quantity and scale the channel via the serial line or
display/keypad, see section Analog Output Quantities on page 119. For testing the analog output, see Section Analog Output Tests on page 121. For fault indication setting, see section Analog Output Fault Indication Setting on page 122.
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For installations in the USA: If your transmitter has both the relay module and a LAN or WLAN module, the maximum voltage you are allowed to connect to the relay module is 50 V.
NO
Normally open
C
Common relay
NC
Normally closed
Relay NOT activated:
C and NC outputs are closed, NO is open
Relay IS activated:
C and NO outputs are closed, NC is open.

Alarm Relays

DMT345/346 can be equipped with one or two configurable relay modules. Each module contains two configurable relays. See the contact ratings in section Technical Specifications of Optional Modules on page
166.
Installation and Wiring
1. Disconnect the power. In case the relay-module is installed in the factory, continue with the step 5.
2. To attach the module, open the transmitter cover and fasten the relay module to the bottom of the housing with four screws. See the position in Figure 2 on page 23.
3. When the mains power is in use attach the grounding wire to the grounding terminal.
4. Connect the flat cable between the relay module and the motherboard's pins MODULE 2 or MODULE 1.
CAUTION
5. Take out the protective plug from the cable gland and thread the relay wires.
6. Connect the wires to the screw terminals: NO, C, and NC.
Selecting Relay Activation State
The middlemost C terminal and either one of the terminals NO/NC shall be connected. The polarity can be freely selected.
Connect the power and close the cover. For instructions on how to operate the relay (for examp le, selecting quantity for the relay output and setting the relay setpoints), see section Operation of Relays on page 123.
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The following numbers refer to Figure 32 above:
1 = Indication LED for the relay 1 or 3
2 = Relay test buttons
3 = Flat cable pins
4 = Indication LED for relay 2 or 4
The relay module may contain dangerous voltages even if the transmitter power has been disconnected. Before working on the relay module you must switch off relay terminals.
RS connected when RS normally.
WARNING
WARNING
0605-032
Figure 32 Relay Module
both the transmitter and the voltage connected to the
Do not connect the mains power to relay unit without grounding the transmitter.

RS-422/485 Interf ace

The RS-422/485 interface enables communication between an RS-485 network and the DMT345/346 transmitter. The RS-485 interface is isolated and offers a maximum communications rate of 115 200 bits/s. (For maximum bus length of 1 km, use bit rate 19200 b/s or less.)
When selecting an RS-232 to RS-485 converter for the network, avoid self-powered converters, as they do not necessarily support the needed power consumption.
NOTE
VAISALA ________________________________________________________________________ 53
-232 User Port on DMT345/346 main board cannot be used and
-485 module is connected. Service port operates
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User's Guide _______________________________________________________________________
The following numbers refer to Figure 33 above:
1 = Flat cable pins
2 = Selection switches
3 = Screw terminals for wiring
1
2
3
1102-023
Figure 33 RS-422/485 Module
NOTE
The data lines on earlier versions of the RS-422/485 module are marked A and B instead of D1+ and D0-. When the line is idle, D1+ has positive voltage compared to D0-.
When connecting the module, be prepared to swap the D1+ and D0­wires if you have a communication problem.
Installation and Wiring
1. Disconnect the power. In case the RS-422/485-module is installed in the factory, continue with the item 4.
2. To attach the module, open the transmitter cover and fasten the RS-422/485 module to the bottom of the housing with four screws.
3. Connect the flat cable between the RS-422/485 module and the motherboard's pins MODULE1 (Communications).
4. Pull the network wirings through the cable gland.
5. Connect the twisted pair wires (1 or 2 pairs) to the screw terminals as presented in Table 6:
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Screw Terminal
Data Line (2-wire RS-485)
Data Line (4-wire RS-485/422)
1
(not connected)
Rx D0-
2
(not connected)
Rx D1+
3
Common
Common
4
D0-
Tx D0-
5
D1+
Tx D1+
If you use the internal termination of the transmitter at the end of the RS transmitter will block the bus operation.
Table 6 Connecting Twisted Pair Wires to Screw
Terminals
To avoid problems in the RS-422/485 network, the Common
terminal should be wired to the corresponding terminals of the other devices.
6. If you use RS-422 or RS-485 to connect just one transmitter to a
master computer, enable the internal termination of DMT345/346 by switching switches 1 and 2 ON. Make sure that the master's end of the line is also terminated (by using master's internal termination or with a separate terminator).
NOTE
If you are connecting many transmitters to the same RS-485 bus, make sure that switches 1 and 2 are OFF and terminate the bus with separate terminators at both ends. This allows removing any transmitter without blocking the bus operation.
-485 bus (instead of using separate terminators) removing that
7. Use the bus type (4-wire/2-wire) to select the selection switch 3.
In 4-wire mode RS-485 master sends data to the DMT345/346 through terminals Rx D1+ and Rx D0- and receives data from DMT345/364 through terminals Tx D1+ and Tx D0-.
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RS-485 master
Data
DMT345/346
Tx D1+
Rx D1+
Tx D0-
Rx D0-
Rx D1+
Tx D1+
Rx D0-
Tx D0-
Stub
Termination Termination
Termination Termination
Twisted pair
120R
120R
120R
120R
Twisted pair
Stub
Stub
Baud > 19.2K Stub < 10ft, 3m Baud >112K Stub < 1ft, 0.3m
Rx D0­Rx D1+ Common Tx D0­Tx D1+
Switch Te rm o ff Te rm o ff 2/4 wire on RS422 off
Tx D0­Tx D1+ Common Rx D0­Rx D1+
Switch Te rm o ff Te rm o ff 2/4 wire on RS422 off
Tx D0­Tx D1+ Common Rx D0­Rx D1+
RS485-1
RS485-1
Address MM
Address NN
RS485 bus master
Junction
box
Junction
box
Junction
box
Common
line
Common
line
1102-028
Figure 34 4-Wire RS-485 Bus Connections, Part A Table 7 4-Wire (Switch 3: On)
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RS-485 master
Data
DMT345/346
D1+
D1+
D0- ↔ D0-
Termination
Termination
Junction
box
Junction
box
Junction
box
120R D0­D1+ Common
Switch Te rm o ff Te rm o ff 2/4 wire off RS422 off
Stub
Stub
Stub
RS485-1
RS485-1
RS485 bus master
Twisted pair Common line
Address NN
Address MM
Common D0­D1+
Switch Te rm o ff Te rm o ff 2/4 wire off RS422 off
Common D0­D1+
120R
Twisted pair Common line
Figure 35 2-Wire RS-485 Bus Table 8 2-Wire (Switch 3: Off)
8. When operating in communication mode RS-422, set both switches 3 and 4 to ON position (4-wire wiring is required for RS-422 mode).
9. Connect the power and close the cover.
1102-027
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1 =
Flat cable connector
2 =
RJ45 connector with indicator LEDs for link and activity

LAN Interface

The optional LAN interface enables an Ethernet connection to the transmitter. The user can establish a virtual terminal session using a Telnet client program such as PuTTY or by using Modbus TCP protocol.. When the LAN interface is in use, serial communication using the RS­232 User Port is disabled.
The LAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. The physical connection to the network is made to the RJ45 connector on the LAN interface module, using a standard twisted pair Ethernet cable (10/100Base-T). Transmitters with the optional LAN interface are delivered pre-installed with a suitable cable and cable gland.
The LAN interface can use both static and dynamic network settings. If the interface is configured to use dynamic settings, the network where the LAN interface is connected must have a DHCP server that provides the settings.
CAUTION
The network configuration can be done using the optional display and keypad, or by using the service port. For instructions, see section LAN Communication on page 80. The LAN interface also provides a web configuration interf ace , whi ch you can acc ess b y entering the IP address of the LAN interface in the address field of a web browser. See section Web Configuration for LAN and WLAN on page 86.
The LAN interface is designed to be used in trusted network environments (trusted corporate LAN or VPN-based connection over internet). Avoid connecting the transmitter directly to a public network because the device can be attacked by a malicious user through the network.
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0709-003
Figure 36 LAN Interface Module
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Chapter 3 ________________________________________________________________ Installation
1 =
Flat cable connector
2 =
Connector for antenna cable (connected to transmitter cover)
The WLAN interface is designed to be used environments (trusted corporate LAN or VPN internet). Avoid connecting the transmitter directly to a public network because the device can be attacked by a malicious user through the network.

WLAN Interface

The optional WLAN interface enables a wireless Ethernet connection (IEEE 802.11b) to the transmitter. The user can establish a virtual terminal session using a Telnet client program such as PuTTY or by using Modbus TCP protocol. When the WLAN interface is in use, serial communication using the RS-232 User Port is disabled.
The interface supports Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA, WPA2). For WEP, 64 and 128 bit encryption is supported, with open system or shared key authentication. WPA is used in the Pre-Shared Key (PSK) mode, with either TKIP or CCMP (also known as AES) encryption.
Similarly to the LAN interface, the WLAN interface can use both static and dynamic network settings. If the interface is configured to use dynamic settings, the network where the WLAN interface is connected must have a DHCP server that provides the settings.
CAUTION
The WLAN interface also provides a web configuration interface, which you can access by entering the IP address of the WLAN interface in the address field of a web browser. See section Web Configuration for LAN and WLAN on page 86.
0802-103
Figure 37 WLAN Interface Module
in trusted network
-based connection over
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Observation Period
Period for Trend/Max/Min Calculations (Resolution)
3 hours
90 seconds
1 day
12 minutes
10 days
2 hours
2 months
12 hours
1 year
3 days
4 years
12 days
NOTE
The default country setting for the WLAN interface is United States, which limits the operation to WLAN channels 1 ... 11. To enable additional channels (12 ... 14), you can change the country setting using the web configuration interface.
Attaching the WLAN Antenna
The WLAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Before taking the transmitter into use, you must attach the antenna of the WLAN interface into the RP-SMA connector on the transmitter cover. The location of the antenna is shown in Figure 81 on page 170.

Data Logger Module

The optional data logger module extends the data storage for the measurement data. When the data logger is present, this storage is automatically used by the transmitter. The stored data can be browsed using the optional display module, and accessed through the serial connections. See sections Graphic History on page 65 and Data Recording on page 114.
The data logger module contains non-volatile flash memory providing 4 years and 5 months of storage for 4 parameters at a 10-second sampling interval. When the memory is full, the data recording will not stop. Instead, the oldest data is overwritten. For each parameter and observation period, the module stores the minimum and maximum values during the interval, as well a data trend value that is averaged from samples taken during the interval (see Table 9 below).
Table 9 Observation Periods and Resolution
The quantities that are logged are the same that have been selected for measurement using the display/keypad or the serial line. When taking the transmitter into use, verify that the desired quantities are selected. If you change the quantities later, the transmitter will start logging the new quantities, and stop logging the quantities that are no longer selected. Changing the quantities does not delete any measurement data that is already in memory. However, the data of any removed quantity cannot be accessed unless the quantity is re-activated first.
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1 =
Flat cable pins
2 =
Battery
The data logger module has a real time clock with a battery back-up. The clock has been set to the Coordinated Universal Time (UTC) at the factory, and its time cannot be set by the user. The data that is stored in the logger's memory is timestamped using the logger's clock.
When date and time are set on the transmitter, they are stored to the transmitter's memory as an offset from the time on the logger's clock. When browsing the stored data, the time offset is applied to the timestamps shown in the graphical history, and data outputted from the serial port. The timestamps in the data logger's memory remain as they were originally stored.
You can compensate for the clock drift (less than ±2 min/year) by setting the time on the transmitter. This updates the time offset used on the display and the serial port. You can set the time by using the keypad/display or the serial commands.
0706-068
Figure 38 Data Logger Module
After a reset or a power up, it will usually take at least 10 seconds before the data logger module is initialized. The instrument will not start up before the data logger module is ready.
The indicator LED on the module will blink green during normal operation. If the LED is lit in red color, there is a problem with the module. The transmitter will also indicate the problem by activating the "Internal error on add-on module" error. If the module is not operating correctly, the transmitter must be sent to Vaisala for maintenance.
The data logger module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. When the module requires a new battery, the transmitter must be sent to Vaisala for maintenance.
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Pin
Wire Serial Signal
Analog Signal RS-232 (EIA-232)
RS-485 (EIA-485)
1
White
Data out TX
D1+
-
2
Brown
(Serial GND)
(Serial GND)
Signal GND (for both channels)
3
Green
-
-
Ch 2 +
4
Yellow
-
-
Ch 1 +
5
Grey
Supply –
Supply –
Supply –
6
Pink
Supply +
Supply +
Supply +
7
Blue
Data in RX
D0-
- 8 Shield/Red
Cable shield
Cable shield
Cable shield

8-Pin Connector

1104-126
Figure 39 Pinout of the Optional 8-Pin Connector
Table 10 Wiring of the Optional 8-Pin Connector
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Chapter 4 _________________________________________________________________ Operation
CHAPTER 4

OPERATION

This chapter contains information that is needed to operate this product.

Getting Started

Within a few seconds after power-up the LED on the cover of the transmitter is lit continuously indicating normal operation. When the transmitter is turned on the first time, the language selection window opens: Select the language with ▲▼ arrow buttons and press the SELECT button (the left-hand button).
Pressure has an effect on humidity calculations and accuracy. Therefore, accurate calculations can be achieved only when the ambient pressure is taken into consideration. See section Pressure Compensation Setting on page 100 for instructions on how to set the pressure.
Start-up time for DMT345/346 transmitter is in total about 6 minutes. The outputs (serial and analog) are activated 3 seconds after powering up the transmitter. If the data logger module is installed, the it may take up to 18 seconds for the outputs to be activated.
In addition, 10 seconds after the measurement the outputs will freeze for about 6 minutes due to the sensor self diagnostics procedure (Sensor Purge and AutoCal). The frozen output value will be the value the transmitter reached during the 10 seconds of measurement. After the self diagnostics procedure the outputs are operational again.
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The numbers refer to Figure 40 above:
1 = INFO shortcut button
2 = GRAPH shortcut button changes the display into a curve mode
3 = Selected quantities
From any view, even in the absence of an press on the right display.

Display/Keypad

Basic Display

Display shows you the measurement values of the selected quantities in the selected units. You can select 1 ... 4 quantities for the numerical basic display (see section Changing Quantities and Units on page 97).
0605-036
Figure 40 Basic Display
NOTE
Press the INFO button (in the basic display) to see the device information views, see section Device Information on page 106.
EXIT button, a four-second
-hand function button takes you directly to the basic
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Observation Period
Period for Trend/Max/Min Calculations (Resolution)
3 hours
1.5 minutes
1 day
12 minutes
10 days
2 hours
2 months
12 hours
1 year
3 days
4 year*
12 days

Graphic History

The graphical display shows the data trend or min/max graph of the selected quantities, one at a time. The graph is updated automatically while measuring.
0706-028
Figure 41 Graphical Display Trend graph: Shows you a curve of average values. Each value is a
calculated average over a period. See Table 11 below. Max/min graph: Shows you the minimum and maximum values in a
form of curve. Each point shows the absolute minimum and maximum observed during the time period represented by the data point. See Table 11 below.
Table 11 Periods for Trend and Max/Min Calculations
* Shows the maximum logging period of the data logger module (available when data logger module is installed)
Use the following functions in the graphical display:
- Press the NEXT button to change between the trend graph and
max/min graph for the quantities selected for display.
- Press the EXIT button to return to the basic display.
- Press the ▼▲ arrow buttons to zoom in and out in the graph window.
- Press the ◄► arrow buttons move the cursor (vertical bar) along the
time axis. The cursor mode allows you to observe individual measuring points. The numerical value at the cursor position is shown at the left upper corner. The right upper corner shows the time from the present to the chosen moment (without the logger module), or the date and time at the cursor position (when the logger module is installed).
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Failure Message
Interpretation
Power outage
Power failure (marked also with dashed vertical line)
No data
Quantity has not been selected for the display
System error
General device or power supply problem
T meas. error
Temperature measurement/sensor failure
RH meas. error
Humidity measurement/sensor failure
Adj. mode active
Adjustment mode active (data recorded in the adjustment mode is not displayed)
Autocal
AutoCal performed (only shown in 3 h graphs)
- If the optional data logger module is installed, you can scroll the cursor off the screen to move to a new point on the time axis. The new date will be displayed, and the cursor will be centered at the date where the cursor scrolled off the screen.
0706-030
Figure 42 Graphical Display with Data Logger
If the data logger module is installed, you can move quickly on the time axis: zoom out, move the cursor, and zoom back in.
The time that is shown below the graph is adjusted with the current time offset of the transmitter. If you change the transmitter's date and time setting, the displayed timestamps in the history graph change accordingly. For an explanation of the effect of changing the date and time manually, see section Data Logger Module on page 60.
Table 12 Graph Information Messages
A question mark after time tells you that at least one power failure (dashed vertical line) has occurred after the chosen moment. In this case, the actual time difference between the present and the cursor position is not exactly known. If the data logger module is installed, the time is known and the question marks are not present.
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Menus and Navigation

You can change settings and select functions in the menus.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons in the basic (numeric) display mode.
2. Move in the menus by using the ▲▼ arrow buttons.
3. Open a submenu with the ► button.
4. Press ◄ to return to the previous level.
5. Function button EXIT returns you back to the basic display. Adjustment menu is displayed only when ADJ button (on the
motherboard inside the transmitter) is pressed.
0706-011
Figure 43 Main Views
Some menu items, such as Relay outputs in the Interfaces menu, are only shown if supported by the transmitter and the installed options.
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Changing the Language
1. Go back to the basic display by keeping the right-hand button
pressed for four seconds.
2. Open the Main Menu by pressing any of the ▼▲◄► buttons.
3. Scroll to the System menu option, and press the ► button. The
menu option is indicated with the wrench symbol.
4. Scroll to the Language menu option, and press the left-hand
button. The menu option is indicated with the flag symbol.
5. Select the language with the ▼▲ buttons, and confirm the
selection by pressing the left-hand button.
6. Press the right-hand button to exit to the basic display.
Rounding Setting
Round off one decimal by using the Rounding function . The default setting is rounding on. Rounding has no effect on quantities without decimals.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Select ►Display and confirm by pressing the ► arrow button.
3. Select Rounding and press ON/OFF button.
4. Press EXIT to return to the basic display.
Display Backlight Setting
As a default the display backlight is always on. In the automatic mode the backlight stays on for 30 seconds from the last press of the button. When pressing any button, the light turns on again.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Select ►Display, press the ► arrow button.
3. Select Backlight, press the CHANGE button.
4. Select On/Off/ Automatic, press the SELECT button.
5. Press EXIT to return to the basic display.
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where
xxx
=
Contrast value for display. Recommended range -9 ... 9, default 0. Negative values make screen lighter, positive values make it darker.
Display Contrast Sett ing
Display contrast is automatically adjusted based on the ambient temperature. However, depending on the installation location and viewing direction, it may be necessary to fine-tune the contrast manually.
Using Display/Keypad
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Select ►Display, press the ►arrow button.
3. Select Contrast, press the ADJUST button.
4. Adjust the contrast by pressing the ◄► arrow buttons.
5. Press OK and EXIT to return to the basic display.
Using Serial Line
Use the serial line command CON to view or set the display contrast. CON [xxx]<cr>
Example (view current contrast setting):
>con Contrast : 0 >
Example (set contrast to 5):
>con 5 Contrast : 5 >
Keypad Lock (Keyguard)
This function locks the keypad and prevents unintentional key presses.
1. Keep pressing the left-hand button for 4 seconds to lock the keypad (at any display).
2. To unlock the keypad, press the OPEN button for 4 seconds.
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You can also disable the keypad completely with serial com
LOCK
109
Menu PIN Lock
You can prevent unauthorized changes of the device settings by activating the menu PIN lock. When this function is activated, the basic display, graphical view, and device information displays are available but access to the menus is locked. The key symbol indicates the activation of this feature.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Select ►System, press the ►arrow button.
3. Select Menu PIN, press the ON button.
4. Enter a PIN code by using the ▲▼ arrow buttons. Press OK to
confirm the setting. Now the PIN lock is on and a key symbol is shown in a display.
5. Press EXIT to return to the basic display. Returning to the menu is
possible only by entering the correct PIN code.
NOTE
When you want to turn off the PIN lock, go to the menu by giving the PIN code and select ►System, Menu PIN, press OFF button.
In case you have forgotten the PIN code, open the transmitter cover and press the ADJ button once. Wait for a few seconds and the adjustment menu opens. Select Clear menu PIN, press CLEAR.
mand
. See section Locking Menu/Keypad Using Serial Line on page
.

Factory Settings

Use the display/keypad to restore the factory settings. This operation does not affect the adjustments. Only settings available in the menus are restored.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Select System by pressing the ► arrow button.
3. Select Factory settings and press the REVERT button to confirm your selection. Press the YES button to reset all settings to the factory defaults.
See section General Settings on page 97 for a description of the other menu options.
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Display Alarms

The Display Alarm feature provides two independently configurable alarms for transmitters with the display/keypad option. Each alarm tracks a selected quantity, with freely configurable limit values. Each alarm also has a configurable hysteresis value to prevent unnecessary triggering when the measurement fluctuates around an alarm limit. The alarms can be configured for any quantity supported by the transmitter. The configuration of the Display Alarms can only be done using the display/keypad option.
You can have the alarm activate inside or outside the specified range by setting the limits correctly:
- To have the alarm activate when the measured quantity is outside the
specified range, set the Act. above limit higher than the Act. below limit.
- To have the alarm activate when the measured quantity is inside the
range, set the Act. above limit lower than the Act. below limit.
The alarm limits are shown on the graph display as thicker dotted lines. When a display alarm is activated, the automatic scaling of the graph display always keeps the limits in view.
1103-062
Figure 44 Alarm Limit Shown on Graph Screen
When an alarm is activated, an alarm note is displayed on the display, and the lights of the display will blink. If the data logger module is installed, the alarm note includes the time and date of the alarm.
1103-063
Figure 45 Display Alarm Active
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Changes you do on the alarm editing page will take effect immediately, and may cause an alarm to appear on
Multiple alarms can be active at the same time; the alarm that was triggered first will be shown on the display. The next active alarm is revealed when the currently shown alarm is acknowledged by pressing the OK button.
Activated alarms are only shown on the screen; there are no alarm messages output to the serial line. After an alarm has been acknowledged, you must refer to the data graphs to see when the measured quantities have exceeded the limits. You may use the optional relay outputs as alarm outputs by configuring them separately; see section Setting Relay Outputs on page 127.
Configuring a Display Alarm
1. Enter the Main Menu by pressing an arrow key on the keypad.
2. Use the arrow keys to select Display, followed by Alarms, to open the Display Alarms menu. The Display Alarms menu shows the currently enabled and disabled alarms.
NOTE
0802-069
Figure 46 Display Alarms
3. Use the arrow keys to select an alarm to configure. The alarm editing page opens.
the screen.
4. To select a quantity for the alarm, press the Change button and select the quantity from the list.
5. To modify or remove the alarm limit values, move the selection over the Act. above or Act. below field and press the Set button. You will be prompted to Modify or Remove the value.
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where
quantity1
=
Quantity for display alarm 1. You can set any quantity available on your transmitter; see quantities, you can also select the following:
FAULT ONLINE measurement output (for example, sensor purge).
quantity2
=
Quantity for display alarm 2. Options are the same as for quantity1.
0802-070
Figure 47 Modifying an Alarm Limit
When modifying the value, use the arrow up and down buttons to change the value under the cursor. Left and right arrow buttons move the cursor. Select the OK button to accept the modified value, or Cancel to undo the modification.
6. Set a suitable Hysteresis value to prevent the alarm from being
triggered unnecessarily by small measurement changes that pass the alarm limit repeatedly.
7. Set or clear the Alarm enable checkbox to enable or disable the
alarm.
8. Press the Exit button to leave the alarm configuration screen and
return to the basic view.
Using Serial Line
Use the serial line command ALSEL to view or set the display alarms. ALSEL [quantity1 quantity2]<cr>
page 20. In addition to
– Alarm for device errors
– Alarm for sensor operations that freeze the
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Name
Description
above
If specified, the alarm goes off when the quantity value rises above
Cannot be set for fault and online alarms.
below
If specified, the alarm goes off when the quantity value decreases
Cannot be set for fault and online alarms.
hyst
Distance from setpoint amount of extra retractment needed in order Cannot be set for fault and online alarms.
enabl
Enable (ON) or disable (OFF) the display alarm.
Example (view current display alarm settings):
>alsel ? Al1 Tdf above: 0.00 'C Al1 Tdf below: ­Al1 Tdf hyst : 1.00 'C Al1 Tdf enabl: ON Al2 T above: 40.00 'C Al2 T below: ­Al2 T hyst : 1.00 'C Al2 T enabl: ON >
Table 13 ALSEL Parameters
the exact value of this setpoint. However, if above < below, the alarm goes off at (above + hyst) and (below – hyst) instead.
below the exact value of this setpoint. However, if above < below, the alarm goes off at (above + hyst) and (below – hyst) instead.
to regenerate alarm on the next crossing of the setpoint.
Example (set H2O and T as display alarm quantities and configure the alarms as prompted):
>alsel h2o t Al1 H2O above: 0.00 ppmV ? 6000 Al1 H2O below: - ? Al1 H2O hyst : 1.00 ppmV ? 500 Al1 H2O enabl: ON ? Al2 T above: 40.00 'C ? 30 Al2 T below: - ? Al2 T hyst : 1.00 'C ? Al2 T enabl: ON ? >
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F

MI70 Link Program for Data Handling

MI70 Link is a support program that enables you to handle the measurement data of your Vaisala transmitter using a Windows PC. Using the MI70 Link you can, for example:
- Monitor the transmitter’s measurement readings directly using the
real-time window function.
- Transfer recorded data from the main transmitter memory in numeric
or graphical format, for further use in a spreadsheet program (such as Microsoft Excel) or virtually any other application. Note that the maximum amount of data points that can be downloaded in one transfer is 65000.
To use the MI70 Link program, you must connect your Windows PC to the service port of the transmitter with a serial or USB cable. The MI70 Link program, and the optional connection cables, are available from Vaisala. See section Spare Parts and Accessories on page 168.
NOTE
Follow the steps below to connect your transmitter and start using the MI70 Link:
1. Connect your PC to the service port of the transmitter. Refer to
section Service Port Connection on page 78.
2. Check that the transmitter is powered.
3. Start the MI70 Link program.
4. Start using the program. There is usually no need to select a COM
port manually, the MI70 Link software can detect it automatically.
or instructions on using the MI70 Link, see the program’s online help.
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The following numbers refer to Figure 48 above:
1 = Service port connector
2 = User Port Terminals

Serial Line Communication

Connect the serial interface by using either the user port or the service port.
For permanent interfacing to host system, use the user port. You can change the serial settings and operate in RUN, STOP, POLL, and MODBUS modes.
For temporary connections use the service port. Service port is always available with fixed serial settings.
0605-039
Figure 48 Service Port Connector and User Port Terminal on the
Motherboard
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Parameter
Value
Bauds
4800
Parity
Even
Data bits
7
Stop bits
1
Flow control
None
User port cannot be used when the RS
RS (LAN, WLAN, or RS
1
2
3
4
5
6
7 8
9
+
– RxD GND TxD Ch1+ Ch1– Ch2+ Ch2–
ANALOG OUTPUTS USER PORT POWER
RS-232 10…36 V=
24 V~
IOIOI

User Port Connection

Use suitable serial cable between the user port RxD, GND and TxD screw terminals and the PC serial port.
Table 14 Default Serial Communication Settings for User Port
NOTE
NOTE
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0506-033
Figure 49 Connection Example between PC Serial Port and User
Port
Connections to pins 4,6,7 and 8 are required only if your software requires hardware handshaking.
-485 module is connected.
User Port Operating Modes
When the transmitter is powered up, it will behave according to its configured operating mode:
- In STOP mode, the transmitter outputs the software version and the command prompt (if echo is on).
- In RUN mode a measurement output starts immediately.
- In POLL or MODBUS mode, the transmitter does not output anything after power-up.
For a description of the modes, see section SMODE on page 112.
-232 User Port cannot be used when a communication module
-422/485 interface) has been installed.
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Service Port Connection

Connection Cables
To connect to the service port, you need a suitable cable with an RJ45 connector. Depending on the connections of your PC, you can either use the Serial Connection Cable (optional accessory 19446ZZ) or the USB­RJ45 Serial Connection Cable (optional accessory 219685). The USB cable enables you to connect the transmitter to a PC via a standard type A USB port. Note that the USB cable does not enable high speed data transfer, since the bit rate is limited by the serial interface of the service port.
Installing the Driver f or t he USB Cabl e
Before taking the USB cable into use, you must install the provided USB driver on your PC. When installing the driver, you must acknowledge any security prompts that may appear.
1. Check that the USB cable is not connected. Disconnect the cable if you have already connected it.
2. Insert the media that came with the cable, or download the latest driver from www.vaisala.com.
3. Execute the USB driver installation program (setup.exe), and accept the installation defaults.
4. After the driver has been installed, connect the USB service cable to a USB port on your PC. Windows will detect the new device, and use the driver automatically.
5. The installation has reserved a COM port for the cable. Verify the port number, and the status of the cable, using the Vaisala USB Instrument Finder program that has been installed in the Windows Start menu.
Windows will recognize each individual cable as a different device, and reserve a new COM port. Remember to use the correct port in the settings of your terminal program.
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Parameter
Value
Bauds
19200
Parity
None
Data bits
8
Stop bits
1
Flow control
None
Using the Service Port
1. Open the screws on the transmitter cover, and open the cover.
2. Connect the desired cable (serial interface cable or USB cable) to
your PC and the service port connector on the transmitter. For location of the service port, refer to Figure 48 on page 76.
3. Open a terminal program and set the communication settings as
follows:
Table 15 Communication Settings for the Service Port
For a detailed explanation of using a terminal program, see section Terminal Program Settings on page 87.
4. Power-up the transmitter.
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Parameter
Description
Automatic configuration
If enabled, the transmitter will retrieve its network
used instead.
Web configuration
If enabled, the settings of the interface can be
of the transmitter.
IP Address
The four part network ID of the transmitter. Must be
Example value: 192.168.0.222
Netmask
Used together with the IP address to determine
A common netmask is 255.255.255.0
Gateway
IP address of the server that enables the transmitter
Example value: 192.168.0.1
MAC
The MAC address is the unique hardware address of the LAN or WLAN interface. Cannot be changed.

LAN Communication

To enable LAN communication, a LAN or WLAN interface must be physically connected to the network, and the networking settings must be suitable for your network. For a description of interfaces, see sections LAN Interface on page 58 and WLAN Interface on page 59.
The LAN and WLAN interfaces both operate by accessing the serial interface (User Port) of the transmitter. All commands and protocols that are available using the serial interface are available through the LAN and WLAN interfaces; refer to section List of Serial Commands on page 90. For instructions on how to connect using a terminal program, see section Terminal Program Settings on page 87.

IP Configuration

The IP settings of the LAN and WLAN interfaces are described in Table
16. The current settings can be viewed on the serial line or using the
device information display; see section Device Informatio n on page 106.
Table 16 IP Settings for the LAN and WLAN Interfaces
(DHCP)
settings (including the IP Address) from a server in the network. If disabled, static network settings are
changed using a web browser. The configuration page can be accessed by browsing to the IP address
set manually if automatic configuration is not used.
which network the transmitter is a part of. Must be set manually if automatic configuration is not used.
to access other networks. Must be set manually if automatic configuration is not used.
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Using Display/Keypad
You can configure the IP settings of the LAN and WLAN interfaces using the display/keypad as follows:
1. Press any of the arrow buttons to open the Main Menu.
2. Press the arrow button to select Interfaces.
3. Press arrow button to select Network settings. There will be a
delay as the transmitter refreshes the network information.
4. You are now in the Network Interface menu. Selecting the IP
configuration option opens the IP configuration menu.
1102-015
Figure 50 Network Interface Menu The Network Interface menu also allows you to configure the
Communication Protocol, enable or disable the Web configuration option, or Disconnect all users that are currently
accessing the LAN or WLAN interface.
5. In the IP configuration menu, select Automatic configuration
(DHCP), or enter the IP address, Netmask and Gateway manually. If automatic configuration is enabled, manual configuration cannot be done.
0709-004
Figure 51 IP Configuration Menu
To enter a value manually, use the ▲▼ arrow buttons to select the parameter to change, and press Change. A cursor will appear in the first digit. Move the cursor using the ◄► arrow buttons, and change the value under the cursor using the ▲▼ arrow buttons. Confirm the selection by pressing OK.
6. After configuring the desired parameters, press EXIT to apply the
changes and return to the basic display.
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where
REFRESH
=
Updates the network information and displays it.
DISCONNECT
=
Disconnects all current sessions.
DHCP
=
ON or OFF. Enables or disables the automatic IP configuration.
WEB
=
ON or OFF. Enables or disables the Web Configuration page.
IP = The four part network ID of the transmitter. Must be set manually if automatic configuration is not used.
SUBNET
=
Used together with the IP address to determine which network the transmitter is a part of. Must be set used.
GATEWAY
=
IP address of the server that enables the transmitter to access other networks. Must be set manually if automatic configuration is not used.
Using Serial Line
Use the serial line command NET to view or set the network settings for the LAN and WLAN interfaces. You can also refresh the network information or disconnect all active connections.
NET [REFRESH] [DISCONNECT] [DHCP WEB] [DHCP IP SUBNET GATEWA Y WE B]<cr>
manually if automatic configuration is not
Examples:
>net refresh OK DHCP : OFF IP address : 192.168.0.101 Subnet mask : 255.255.255.0 Default gateway: 192.168.0.1 Web config. : OFF MAC address : 00:40:9d:2c:d2:05 Status : Not connected >
>net on off DHCP : ON IP address : 192.168.0.104 Subnet mask : 255.255.255.0 Default gateway: 192.168.0.1 Web config. : OFF MAC address : 00:40:9d:2c:d2:05 Status : Connected OK >
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Parameter
Description
SSID
The service set identifier (that is, network … 32 characters.
Security type
The security type of the wireless network. The
security key; see below.
Security key
The encryption key or passphrase that is used with an encrypted network.
>net off 192.168.0.101 255.255.255.0 192.168.0.1 off DHCP : OFF IP address : 192.168.0.101 Subnet mask : 255.255.255.0 Default gateway: 192.168.0.1 Web config. : OFF MAC address : 00:40:9d:2c:d2:05 Status : Connected OK >

Wireless LAN Co nfiguration

The settings of the WLAN interface are described in Table 17. The current settings can be viewed on the serial line or using the device information display; see section Device Information on page 106.
- CCMP encryption is called AES in some networking products.
- The WLAN interface supports both WPA and WPA2 (also known as
802.11i) security when either WPA-PSK mode is selected.
- If your WLAN network is using some other security method than
listed below, you must set up a temporary WLAN network with any of these settings and then use the web configuration to set WLAN security settings for the actual network. See section Web Configuration for LAN and WLAN on page 86.
Table 17 Wireless LAN Settings
name) of the wireless network to connect to. 1
options are: OPEN
OPEN/WEP WPA-PSK/TKIP WPA-PSK/CCMP
All other choices except OPEN require a
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Using Display/Keypad
You can configure the Wireless LAN settings using the display/keypad as follows:
1. Press any of the arrow buttons to open the Main Menu.
2. Press the arrow button to select Interfaces.
3. Press the arrow button to select Network settings. There will be a delay as the transmitter refreshes the network information.
4. Press the arrow button to select Wireless LAN s ettin gs.
0802-111
Figure 52 Wireless LAN Settings
5. The Name entry on the page shows the SSID of the currently selected wireless network. To change the SSID, press the SET button. Use the ▲▼ arrow buttons to change the character under
the cursor, and ◄► arrow buttons to more the cursor. Press the
OK button when done.
0802-110
Figure 53 Entering Network SSID
6. To change the currently selected Network type, select the Type entry and press the Change button. Select the new type from the list and press the Select button.
0802-112
Figure 54 Selecting the Wireless Network Type
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where
SSID
=
Network name in 1 … 32 characters
TYPE
=
Security type of the wireless network. The options are:
OPEN OPEN/WEP WPA WPA-PSK/CCMP
7. If you have selected an encrypted network type (WEP or WPA),
you must enter the security key to be used. Select the Key/passphrase entry and press the Set button. Enter the key in the same way as the SSID, and press the OK button. With the WEP encryption you must enter the encryption key in hexadecimal (10 hexdecimals for 64-bit encryption or 26 hexadecimals for 128-bit encryption). A WPA key must be 8 … 63 ASCII characters.
8. After setting the wireless network parameters, press the Exit button
in the Wireless LAN Settings menu. You will be asked to confirm the new settings. Note that when new settings are saved, all currently active WLAN connections are disconnected.
Using Serial Line
Use the serial line command WLAN to view or set the wireless network settings. If you set an encrypted network type, you will be asked to enter the security key. With the WEP encryption you must enter the encryption key in hexadecimal (10 hexdecimals for 64-bit encryption or 26 hexadecimals for 128-bit encryption) or with plain ASCII characters (5 characters for 64-bit encryption or 13 characters for 128-bit encryption). A WPA key must be 8 … 63 ASCII characters.
WLAN [SSID TYPE]<cr>
-PSK/TKIP
Examples:
>wlan ? Network SSID : WLAN-AP Type : OPEN >
>wlan accesspoint wpa-psk/tkip Network SSID : accesspoint Type : WPA-PSK/TKIP WPA-PSK phrase ? thequickbrownfox Save changes (Y/N) ? y OK >
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Communication Protocol

When a Telnet connection is established via the LAN or WLAN interface, the session has the same communication mode, run interval, poll address and echo settings as the serial port (user port) session would have.
These settings can be changed using the display/keypad, using the serial line (user port or service port), or on-the-fly during the Telnet session.
The display menu path to the Communication Protocol settings is:
Main Menu Interfaces Network Interface Communication Protocol.
The commands for changing the settings are SMODE, INTV, ADDR, and ECHO.

Web Configuration for LAN and WLAN

The LAN and WLAN interfaces both have a web configuration page that is accessible using a browser. If you have not disabled the page from the network settings, you can access it with a web browser at the IP address of the interface. You can check the currently assigned IP address of the interface from the device information screens (see Device In for mat io n on page 106), or from the serial line by issuing the net ? command.
When accessing the web configuration page, you must first log in.
Username: user Password: vaisala
The web configuration page provides similar network configuration options as the serial line and the display/keypad. It also has additional options for advanced users. For example, there are more options for securing the wireless network.
If these additional options are used, they will appear as custom configurations when viewed from the serial line or the display/keypad.
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PuTTY cannot be used to access the transmitter through the User Port if the transmitter is configured to use the can always use PuTTY to access the transmitter through the Service
1102-017
Figure 55 Web Configuration Interface for WLAN
NOTE

Terminal Program Settings

The instructions below describe how to connect to the transmitter using the PuTTY terminal application for Windows. Perform the necessary cabling and configuration of the transmitter before following the instructions.
PuTTY is available for download at www.vaisala.com.
Modbus protocol. However, you
Port.
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Opening a Serial/USB Connection
1. Power up the transmitter and start the PuTTY application.
2. Select the Serial & USB settings category, and check that the correct COM port is selected in the Serial or USB line to connect to field. Change the port if necessary.
If you are using a Vaisala USB cable, you can check the port that it uses by clicking the USB Finder... button. This opens the Vaisala USB Instrument Finder program that has been installed along with the USB drivers.
3. Check that the other serial/USB line settings are correct for your connection, and change if necessary. The default settings (shown in Figure 56 below) are used by the Service Port of the transmitter.
0810-070
Figure 56 Opening a Serial Connection
4. Click the Open button to open the connection window and start using the serial line.
If PuTTY is unable to open the serial port you selected, it will show you an error message instead. If this happens, restart PuTTY and check the settings.
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The instructions below assume that the LAN/WLAN interface on the transmitter is correctly configured and the network connection is already done.
Opening a Telnet Session (LAN/WLAN)
NOTE
1. Power up the instrument and start the PuTTY application. If your
transmitter acquires a network address using DHCP, wait for a minute for this to complete, then verify the address from the transmitter.
2. In the Session window, select the Telnet connection type.
3. Enter the IP address of your transmitter in the Host Name (or IP
address) field. Use the default Telnet port 23.
0810-071
Figure 57 Opening a Telnet Connection
4. Click the Open button to open the connection window and start
using the Telnet session.
If PuTTY is unable to connect the IP address you entered, it will show you an error message instead. If this happens, check the IP address and the connections, restart PuTTY, and try again.
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Command
Description
R
Start the continuous outputting
S
Stop the continuous outputting
INTV [0 ... 255 S/MIN/H]
Set the continuous output interval (for RUN mode)
SEND [0 ... 255]
Output the reading once
DSEND
Output the reading once from all connected transmitters (in STOP or POLL mode)
SMODE [STOP/RUN/POLL/MODBUS]
Set the serial interface mode SERI [baud p d s]
User Port settings (Default: 4800 E 7 1)
ADDR [0 ... 255]
Set the transmitter address (for POLL and MODBUS modes)
NET
View or set networking parameters for LAN and WLAN interfaces
WLAN
View or set wireless network parameters for WLAN interface
OPEN [0 ... 255]
Open temporarily connection to a POLL mode device
CLOSE
Close the temporary connection (back to POLL Mode)
Command
Description
FORM
Set the output format of SEND and R commands
FST
Add the state of AutoCal, purge and sensor commands
SCOM
Assign a new command name that works like the SEND command
FDATE
Add date to R and SEND outputs
FTIME
Add time to output to SEND and R outputs

List of Serial Commands

All commands can be issued either in uppercase or lowercase. In the command examples, the keyboard input by the user is in bold type.
The notation <cr> refers to pressing the carriage return (Enter) key on your computer keyboard. Enter a <cr> to clear the command buffer before starting to enter commands.
In the tables below, the bold text in the brackets is the default setting.
Table 18 Measurement Commands
Table 19 Formatting Commands
warming in connection with SEND and R
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Command
Description
DIR
Lists trend log files
PLAY [0 ... 24] [START END]
Output recorded data file. Start and end
yyyy-mm-dd hh:mm:ss
DSEL
Select logged (and displayed) quantities (1 ... 4)
DELETE
Delete all data files, including the memory of the optional data logger module
UNDELETE
Recover the deleted files that have not been overwritten
Command
Description
PUR
Purge settings
PURGE
Start manual purge
Command
Description
AUTO
AutoCal settings
AUTOCAL
Start manual AutoCal
Command
Description
FCRH
RH two-point adjustment
AØ1
Td/f one-point adjustment
CT
T one or two-point-adjustment
ACAL
Perform analog output adjustment
Command
Description
ASEL
Configure analog output quantities and scales
ITEST
Test analog outputs
AMODE
Display analog output mode
AERR
Change the error output
ASCL
Analog output scaling
AOVER [ON/OFF]
Extend analog output range by 10%
Command
Description
RSEL
Configure relay settings
RTEST
Test relays
Table 20 Data Recording Commands
times can only be specified if the data logger module is installed. The times must be given in the following format:
Table 21 Purge Commands
Table 22 Autocalibration Commands
Table 23 Calibration and Adjustment Commands
Table 24 Setting and Testing the Analog Outputs
Table 25 Setting and Testing the Relays
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Command
Description
?
Output the information about the device
??
Output the information about the device in POLL-state
ALSEL
Set display alarms
CON
Set display contrast
CDATE
Display the output date/set date whe n adjustment enabled
CODE
Display the order configuration code of the transmitter
CTEXT
Display the adjustment information text/set information text when adjustment enabled
DATE
Set date.
DSEND
Output the reading, also in poll mode.
ECHO
Turn the serial interface echo ON/OFF
ERRS
Display transmitter error messages
FIND
All devices in POLL mode send their addresses
HELP
List the currently available commands
LIGHT
Set the display backlight mode
LOCK
Lock the menu or disable the keypad
MODBUS
View Modbus diagnostic counters
MODS
View information about connected modules
PRES
Set the value for pressure compensation
RESET
Reset the device
TEST
Self-diagnostics information
TIME
Set time.
UNIT
Display output units
VERS
Display the software version information
XPRES
Set pressure (temporarily)
MOL/MOLI
View/set mole weight parameter
Table 26 Other Commands
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Getting Measurement Message from Serial Line

Starting Continuous Out put t ing
R
Enter the R command to start the continuous output of measurements. Example:
>r Tdf=-20.6 'C H2O= 958 ppmV x= 0.6 g/kg
>r Tdf=-20.7 'C H2O= 958 ppmV T= 23.8 'C RH= 3.3 %RH >
If a value is too long to fit to the allocated space in the output, or if there is an error in outputting the quantity, the value is displayed with stars '*'.
You can change the format of the output with the following commands:
- Outputting interval can be changed with the INTV command.
- Output message format can be changed with the FORM command.
Stopping Continuous Outputt ing
S
Use the S command to end the RUN mode. After this command all other commands can be used. You can also press the Esc button or reset the transmitter to stop the outputting.
See command SMODE to change the default (power-up) operation mode.
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Outputting Reading Once
Use the SEND command to output the reading once in STOP mode. The output format depends on which parameters the transmitter can output.
SEND<cr> Examples:
>send Tdf= -5.8 'C H2O= 3715 ppmV x= 2.3 g/kg
>send Tdf= -5.9 'C Td= -6.6 'C Tdfa= -5.9 'C Tda= -6.6 'C H2O= 3696 ppmV x= 2.3 g/kg RH= 13.9 %RH a= 2.7 g/m3 aNTP=
3.0 g/m3 T= 22.2 'C dT= 28.1 'C
Assign an Alias for the SEND Command
Use the SCOM command to assign a new command that works like the SEND command. The standard SEND command of the transmitter will
always function normally whatever the SCOM definition may be. Command names are case-insensitive.
SCOM<cr> Example (assigning the command MEASURE as an alias for the SEND
command):
>scom Send command : ? measure >measure Tdf= -5.8 'C H2O= 3715 ppmV x= 2.3 g/kg
> You can remove the SCOM definition by pressing Esc when entering the
command name:
>scom Send command : measure ? <esc>
>
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The total execution time of the of the serial port connection. At slow speeds, i amount of time for devices with large address number to respond. The delay will be the same even if there are no other devices at all.
where
aa = Address of the transmitter (0 ... 255)
Outputting Reading Once Fr om All Trans m it t e rs
Use the DSEND command to output the reading once from all connected transmitters that are in STOP or POLL modes. In order to avoid data collisions, the transmitters will send their response after a suitable delay. The response includes the transmitters’s address, followed by their measurement message.
NOTE
DSEND<cr> Example (transmitters with addresses 3 and 25 responding):
>dsend 3 Tdf= -5.8 'C H2O= 3715 ppmV x= 2.3 g/kg 25 Tdf= -1.1 'C H2O= 5549 ppmV x= 3.5 g/kg >
DSEND command depends on the bit rate
t will take a considerable

Communicating with a Transmitter in POLL Mode

OPEN

When all transmitters on the RS-485 bus are in POLL mode the OPEN command sets one transmitter temporarily to STOP mode so that other commands can be entered.
OPEN [aa]<cr>

CLOSE

The CLOSE command switches the transmitter back to the POLL mode. Example:
>OPEN 2 (opens the line to transmitter 2, other transmitters stay in POLL mode)
>CRH (for example, calibration performed) ... >CLOSE (line closed)
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where
x = ON or OFF
where
x = ON or OFF (default)

Formatting Serial Line Message

NOTE
Instead of using the FTIME, FDATE and FST commands described in this section, you can use the FORM command with modifiers TIME, DATE, and STAT. See section FORM on page 98.
FTIME and FDATE
FTIME and FDATE commands will enable/disable output of time and date to the serial line. To add time to R and SEND outputs enter:
FTIME [x]<cr> To add date to R and SEND outputs enter: FDATE [x]<cr>
Example:
>send RH= 16.2 %RH T= 22.0 'C >ftime on Form. time : ON >send 00:03:56 RH= 16.2 %RH T= 22.0 'C >fdate on Form. date : ON >send 2000-01-01 00:04:08 RH= 16.2 %RH T= 22.0 'C >
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FST
Use the FST command to include the status of purge, sensor warming and AutoCal in output from the SEND and R commands.
FST [x]<cr>
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where the state of the probe is indicated by the following letters and
w...xxx
=
Sensor warming
where xxx
=
Sensor heat power (0 when not warming)
H...xxx
=
Purge
where xxx
=
Sensor temperature (ºC)
S...xxx
=
Sensor cooling after purge
where xxx
=
Sensor temperature (ºC) A...xxx
=
AutoCal
where xxx
=
Sensor temperature (ºC)
Only the an output quantity.
Example:
>fst on Form. status : ON >send w 0 Tdf= 0.6 'C x= 4.0 g/kg SSR= 22.5 % Ts= 23.2 'C >
values:

General Settings

NOTE

Changing Quantities and Units

To change quantities and units use serial commands or the optional display/keypad. See Table 5 on page 20 for available quantities.
quantities selected when ordering the device can be selected as
Using Display/Keypad
Use display/keypad to select the display output quantities.
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
2. Press the arrow button to select Display.
3. Press arrow button to select Quantities.
4. Select the quantity by using the ▲▼ arrow buttons. Confirm the
selection by pressing SELECT. You can select 1 ... 4 display quantities at a time.
5. Press EXIT to return to the basic display. To select display units:
1. Open the Main Menu by pressing any of the ▲▼◄► arrow
buttons.
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Changing the units by using the serial output units.
where
x = Formatter string
2. Press the arrow button to select Display.
3. Use the ▲▼arrow buttons to select Units. Confirm the selection by pressing the right-hand arrow button.
4. Use the ▲▼ arrow buttons to select display units. Confirm the selection by pressing CHANGE. The unit changes from metric to non-metric or the other way round.
5. Press EXIT to return to the basic display.
NOTE
display/keypad has no effect on the
Using Serial Line
Use the serial line command FORM to change the format, and the command UNIT to select metric or non-metric output units.
FORM
Use the serial line command FORM to change the format or select a certain quantities for the output commands SEND and R.
FORM [x]<cr>
Formatter string consists of quantities and modifiers. If no formatter string is entered, the command will display the currently active formatter string. Note that the hash symbol "#" is shown as a backslash "\" when viewing the current formatter string.
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When selecting the quantity, use the abbreviations of the quantities presented in Table 5 on page 20 when issuing the command. The modifiers are presented in Table 27 on page 99.
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Modifier
Description
x.y
Length modifier (number of digits and decimal places)
#t
Tabulator
#r
Carriage-return
#n
Line feed
""
String constant
#xxx
Special character, code "xxx" (decimal), for example #027 for ESC
U5
Unit field and length (length optional)
ADDR
Transmitter address [00...255]
ERR
Error flags for P, T, Ta, RH [0000 ... 1111], 0 = no error
STAT
Transmitter status in 7 character field, for example:
X 95.0 sensor heating active, temperature 95 ºC
SN
Transmitter serial number
TIME
Time [hh:mm:ss]
DATE
Date [yyyy-mm-dd]
OK
Pressure stability indicator, two characters [OK or " "]
CS2
Modulus-256 checksum of message sent so far, ASCII encoded hexadecimal notation
CS4
Modulus-65536 checksum of message sent so far, ASCII encoded hexadecimal notation
CSX
NMEA xor-checksum of message sent so far, ASCII encoded hexadecimal notation
Table 27 FORM Command Modifiers
N 0 no heating h 115 probe heating active, power 115/255 H 159.0 purge heating active, temperature 159 ºC S 115.0 purge cooling active, temperature 115 ºC
Example:
>form "SSR=" 4.2 ssr U5 #t "Ts=" ts U3 #r #n OK >send SSR= 22.51% Ts= 23.14'C
Command 'FORM /' will return the default output format. The default output format depends on the device configuration.
>form / OK >send Tdf= 0.5 'C x= 4.0 g/kg SSR= 22.4 % Ts= 23.1 'C
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where
x = Unit system to be used. Options are: M (metric units) N (non-metric units)
where
y = Unit to be used for H20. Options are: PPMV (parts per million by PPMW (parts per million by weight)
UNIT
Use the UNIT command to select metric or non-metric output units, and change the unit for the H2O quantity:
UNIT [x]<cr>
UNIT H2O [y]<cr>
volume)
NOTE
This command changes both the serial output and display units to either metric or non-metric units. When you want to output both metric and non-metric units simultaneously on the display, select the display units by using the display/keypad.
Examples:
>unit m Output units : metric >
>unit h2o ppmv H2O units : ppmV >
Use the MOL/MOLI command to view/set mole weight parameter that will be used in calculating H2O ppmw.

Pressure Compensation Setting

The pressure has an effect on humidity calculations and accuracy. Therefore, accurate calculations can be achieved only when the process pressure is taken into consideration. If you are using mixing ratio as an output quantity, it is recommended that you make the pressure compensation setting.
Note that conversions from mmHg and inHg are defined at 0°C and for mmH2O and inH2O at 4°C.
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