Vaisala HUMICAP HMT330 SERIES User manual

USER'S GUIDE
Vaisala HUMICAP® Humidity and
Temperature Transmitter Series
HMT330
M210566EN-J

PUBLISHED BY
Vaisala Oyj Phone (int.): [phone]
P.O. Box 26 Fax: [phone]
FI-00421 Helsinki
Finland
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2011
No part of this manual may be reproduced in any form or by any means, electronic or
mechanical (including photocopying), nor may its contents be communicated to a third
party without prior written permission of the copyright holder.
The contents are subject to change without prior notice.
Please observe that this manual does not create any legally binding obligations for
Vaisala towards the customer or end user. All legally binding commitments and
agreements are included exclusively in the applicable supply contract or Conditions of
Sale.

________________________________________________________________________________
VAISALA________________________________________________________________________ 1
Table of Contents
CHAPTER 1
GENERAL INFORMATION..........................................................................11
About This Manual.................................................................11
Contents of This Manual.....................................................11
Version Information.............................................................12
Documentation Conventions...............................................12
Safety.......................................................................................13
ESD Protection....................................................................13
Recycling ................................................................................14
Regulatory Compliances.......................................................14
EU Declaration of Conformity..............................................14
DNV Type Approval ............................................................15
Transmitters with LAN or WLAN Interface..........................15
Transmitters with WLAN Interface ......................................16
Patent Notice ..........................................................................16
Trademarks.............................................................................16
License Agreement................................................................17
Warranty..................................................................................17
CHAPTER 2
PRODUCT OVERVIEW................................................................................19
Introduction to HMT330.........................................................19
Basic Features and Options................................................20
Structure of the Transmitter ................................................21
Probe Options .....................................................................23
Warmed Probe HMT337.....................................................25
CHAPTER 3
INSTALLATION............................................................................................27
Mounting the Housing ...........................................................27
Standard Mounting without Mounting Plate........................27
Wall Mounting with Wall Mounting Kit.................................28
Mounting with DIN Rail Installation Kit................................30
Pole Installation with Installation Kit for Pole or Pipeline ....30
Mounting Rain Shield with Installation Kit...........................32
Panel Mounting Frame........................................................33
Wiring ......................................................................................34
Cable Bushings...................................................................34
Grounding the Cables.........................................................35
Grounding the Transmitter Housing....................................36
Signal and Power Supply Wiring.........................................37
Connections to a 24 VAC Power Supply ............................38
Probe Mounting......................................................................40
General Instructions for Probes with a Cable .....................41
HMT333 for Ducts and Tight Spaces..................................43

User's Guide ______________________________________________________________________
2 ___________________________________________________________________ M210566EN-J
HMT334 for High Pressure and Vacuum Applications........43
HMT335 for High Temperatures..........................................45
HMT337 for High Humidity Applications..............................46
Temperature Probe (Optional).......................................46
HMT338 for Pressurized Pipelines......................................46
Tightening the Clasp Nut................................................48
Optional Modules ...................................................................49
Power Supply Module .........................................................49
Installation......................................................................50
Warnings ........................................................................51
Galvanic Isolation for Output...............................................54
Third Analog Output ............................................................54
Installation and Wiring....................................................55
Relays..................................................................................56
Installation and Wiring....................................................56
Selecting the Activation State of the Relay....................56
RS-422/485 Interface ..........................................................57
Installation and Wiring....................................................58
LAN Interface.......................................................................62
WLAN Interface...................................................................63
Attaching the WLAN Antenna ........................................64
Data Logger Module............................................................65
8-Pin Connector...................................................................67
CHAPTER 4
OPERATION.................................................................................................69
Getting Started........................................................................69
Display/Keypad (Optional).....................................................69
Basic Display.......................................................................69
Graphic History....................................................................70
Menus and Navigation.........................................................72
Changing the Language.................................................73
Rounding Setting............................................................73
Display Backlight Setting................................................73
Display Contrast Setting.................................................74
Keypad Lock (Key guard)...............................................74
Menu PIN Lock...............................................................74
Factory Settings .............................................................75
Display Alarms.....................................................................75
Configuring a Display Alarm...........................................76
MI70 Link Program for Data Handling ..................................78
Serial Line Communication...................................................79
User Port Connection..........................................................80
User Port Operating Modes............................................80
Service Port Connection......................................................81
Connection Cables.........................................................81
Installing the Driver for the USB Cable ..........................81
Using the Service Port....................................................82
LAN Communication..............................................................82
IP Configuration...................................................................83
Using Display/Keypad....................................................84
Using Serial Line............................................................85
Wireless LAN Configuration................................................86
Using Display/Keypad....................................................87
Using Serial Line............................................................88
Communication Protocol .....................................................89

________________________________________________________________________________
VAISALA________________________________________________________________________ 3
Web Configuration for LAN and WLAN...............................89
Terminal Program Settings .................................................90
Opening a Serial/USB connection .................................90
Opening a Telnet session (LAN/WLAN)........................91
List of Serial Commands.......................................................93
Getting Measurement Message from Serial Line................95
Starting Continuous Outputting......................................95
Stopping Continuous Outputting....................................96
Outputting Reading Once ..............................................96
Assign an Alias for the SEND Command ......................96
Communicating with a Transmitter in POLL Mode.............97
OPEN..................................................................................97
CLOSE................................................................................97
Formatting Serial Line Message...........................................98
FTIME and FDATE..............................................................98
FST......................................................................................99
General Settings...................................................................100
Changing Quantities and Units .........................................100
Using Display/Keypad..................................................100
Using Serial Line..........................................................101
FORM......................................................................101
UNIT........................................................................103
Pressure Compensation Setting .......................................104
Using Display/Keypad..................................................104
Using Serial Line..........................................................104
PRES and XPRES..................................................104
Date and Time...................................................................105
Using Display/Keypad..................................................105
Using Serial Line..........................................................106
Data Filtering.....................................................................106
FILT..............................................................................107
Device Information............................................................107
? ...................................................................................108
LIGHT...........................................................................108
HELP............................................................................109
ERRS...........................................................................109
VERS ...........................................................................109
Resetting Transmitter Using Serial Line ...........................109
RESET.........................................................................109
Locking Menu/Keypad Using Serial Line..........................110
LOCK ...........................................................................110
Serial Output Settings..........................................................110
Using Display/Keypad.......................................................111
Using Serial Line...............................................................112
SERI.............................................................................112
SMODE........................................................................113
ADDR...........................................................................113
INTV.............................................................................114
SDELAY.......................................................................114
ECHO...........................................................................115
Data Recording.....................................................................115
Selecting Data Recording Quantities................................115
DSEL............................................................................115
View Recorded Data.........................................................116
DIR...............................................................................116
PLAY............................................................................117

User's Guide ______________________________________________________________________
4 ___________________________________________________________________ M210566EN-J
Deleting the Recorded Files..............................................118
UNDELETE..................................................................119
Analog Output Settings .......................................................119
Changing Output Mode and Range...................................119
Analog Output Quantities..................................................121
AMODE/ASEL..............................................................122
Analog Output Tests..........................................................123
ITEST ...........................................................................123
Analog Output Fault Indication Setting..............................124
AERR............................................................................124
Operation of Relays..............................................................125
Quantity for Relay Output..................................................125
Measurement-Based Relay Output Modes.......................125
Relay Setpoints............................................................125
Hysteresis.....................................................................127
Relay Indicating Transmitter Error Status .........................127
Enabling/Disabling Relays.................................................129
Setting Relay Outputs .......................................................129
RSEL............................................................................130
Testing Operation of Relays..............................................132
RTEST..........................................................................132
Sensor Functions .................................................................133
Chemical Purge (Optional)................................................133
Automatic Chemical Purge (Interval Purge).................134
Manual Chemical Purge...............................................134
Chemical Purge in Power Up.......................................134
Starting and Configuring Chemical Purge.........................135
Using Buttons on Motherboard ....................................135
Using Display/Keypad (Optional).................................135
Using Serial Line..........................................................136
PURGE....................................................................136
PUR.........................................................................136
Sensor Heating..................................................................137
Setting Humidity Sensor Heating.................................138
XHEAT ....................................................................138
CHAPTER 5
MODBUS ....................................................................................................139
Overview of MODBUS Protocol Support............................139
Taking MODBUS into Use.................................................140
Enabling Serial MODBUS.....................................................141
Using Display/Keypad (Optional) ......................................141
Using Serial Line ...............................................................141
Enabling Ethernet MODBUS................................................143
Using Display/Keypad (Optional) ......................................143
Using Serial Line ...............................................................144
Diagnostic MODBUS Counters ...........................................146
Viewing Counters Using Display/Keypad..........................146
Viewing Counters Using Service Port ...............................146
Disabling MODBUS ..............................................................147

________________________________________________________________________________
VAISALA________________________________________________________________________ 5
CHAPTER 6
MAINTENANCE .........................................................................................149
Periodic Maintenance ..........................................................149
Cleaning............................................................................149
Changing the Probe Filter.................................................149
Changing the Sensor...........................................................150
Error States.......................................................................151
Technical Support................................................................153
Product Returns...................................................................153
CHAPTER 7
CALIBRATION AND ADJUSTMENT.........................................................155
Opening and Closing the Adjustment Mode .....................155
Relative Humidity Adjustment ............................................157
Using Push Buttons...........................................................157
Using Display/Keypad.......................................................158
Using Serial Line...............................................................159
CRH .............................................................................159
Relative Humidity Adjustment after Sensor Change........160
Using Display/Keypad.......................................................160
Using Serial Line...............................................................160
FCRH...........................................................................160
Temperature Adjustment.....................................................161
Using Display/Keypad.......................................................161
Using Serial Line...............................................................161
Analog Output Adjustment..................................................163
Using Display/Keypad.......................................................163
Using Serial Line...............................................................163
ACAL............................................................................163
Feeding Adjustment Information........................................164
Using Display/Keypad.......................................................164
Using Serial Line...............................................................164
CTEXT .........................................................................164
CDATE.........................................................................164
CHAPTER 8
TECHNICAL DATA....................................................................................165
Specifications.......................................................................165
Performance......................................................................165
Relative Humidity.........................................................165
Temperature (+ Operating Pressure Ranges).............166
Optional Temperature Probe .......................................166
Calculated Variables....................................................167
Accuracies of Calculated Variables ..................................167
Accuracy of Dewpoint Temperature °C .......................167
Accuracy of Mixing Ratio g/kg (Ambient Pressure
1013 mbar)...................................................................167
Accuracy of Wet Bulb Temperature °C........................168
Accuracy of Absolute Humidity g/m³............................168
Dewpoint Temperature (HMT337 Warmed Probe Option)169
Operating Environment.....................................................169
Inputs and Outputs............................................................170
Mechanics.........................................................................170

User's Guide ______________________________________________________________________
6 ___________________________________________________________________ M210566EN-J
Transmitter Weight.......................................................171
Technical Specifications of Optional Modules...................171
Power Supply Module ..................................................171
Analog Output Module..................................................171
Relay Module ...............................................................172
RS-485 Module ............................................................172
LAN Interface Module...................................................172
WLAN Interface Module...............................................172
Data Logger Module.....................................................173
Options and Accessories ....................................................173
Dimensions (mm/inch).........................................................175
HMT331.............................................................................177
HMT333.............................................................................178
HMT334.............................................................................178
HMT335.............................................................................179
HMT337.............................................................................179
HMT338.............................................................................180
Temperature Probe ...........................................................180
APPENDIX A
PROBE INSTALLATION KITS AND INSTALLATION EXAMPLES .........181
Duct Installation Kits (for HMT333/337/335).......................181
Duct Installation Kit for Temperature Probe
(for HMT337)..........................................................................182
Pressure Tight Swagelok Installation Kits (for HMT337)..183
RH Probe Installation.........................................................183
Temperature Probe Installation.........................................183
Examples of Vapor Tight Installations with Cable Gland.184
RH-Probe Installations (for HMT333/337).........................184
T- Probe Installations (HMT337).......................................185
Example of Climate Chamber Installation.........................186
Example of Installation Through Roof...............................187
Ball Valve Installation Kit for HMT338................................188
Meteorological Installation Kit (for HMT337).....................190
APPENDIX B
CALCULATION FORMULAS.....................................................................191
APPENDIX C
MODBUS REFERENCE.............................................................................195
Function Codes.....................................................................195
Register Map.........................................................................196
Data Encoding...................................................................196
32-Bit Floating Point Format ........................................196
16-Bit Integer Format ...................................................197
Measurement Data (Read-Only).......................................198
Status Registers (Read-Only) ...........................................199
Configuration Registers.....................................................199
Exception Status Outputs....................................................200
Diagnostic Sub-Functions...................................................201
Device Identification Objects ..............................................202
Exception Responses..........................................................202

________________________________________________________________________________
VAISALA________________________________________________________________________ 7
List of Figures
Figure 1 Transmitter Body......................................................................21
Figure 2 Inside the Transmitter...............................................................22
Figure 3 HMT331 Fixed Probe...............................................................23
Figure 4 HMT331 Short Cable Probe.....................................................23
Figure 5 Probe Options ..........................................................................24
Figure 6 Standard Mounting...................................................................27
Figure 7 Mounting with Wall Mounting Kit..............................................28
Figure 8 Dimensions of the Plastic Mounting Plate (mm/inch)...............28
Figure 9 Dimensions of the Probe Holder Plate (mm/inch)....................29
Figure 10 Mounting with the DIN Rail Installation Kit...............................30
Figure 11 Vertical Pole.............................................................................30
Figure 12 Horizontal Pole.........................................................................31
Figure 13 Mounting with Metal Wall Mounting Plate................................31
Figure 14 Dimensions of the Metal Mounting Plate (mm/inch) ................32
Figure 15 Mounting the Rain Shield with the Installation Kit....................32
Figure 16 Panel Mounting Frame.............................................................33
Figure 17 Panel Mounting Dimensions (mm/inch) ...................................34
Figure 18 Cable Bushings........................................................................34
Figure 19 Grounding the Screen of Electrical Cable................................35
Figure 20 Screw Terminal Block on Motherboard....................................37
Figure 21 Connections to 24 VAC Power Supply.....................................39
Figure 22 Measurement Error at 100 %RH..............................................40
Figure 23 Horizontal Mounting of Probe...................................................41
Figure 24 Vertical Mounting of Probe.......................................................42
Figure 25 HMT344 Probe.........................................................................44
Figure 26 Tightening the Nut....................................................................44
Figure 27 Cleaning of Tightening Cone....................................................45
Figure 28 HMT338 Probe.........................................................................47
Figure 29 Sealing of Fitting Body into Process ........................................47
Figure 30 Tightening the Clasp Nut..........................................................48
Figure 31 Power Supply Module ..............................................................49
Figure 32 Galvanic Output Isolation Module............................................54
Figure 33 Third Analog Output.................................................................54
Figure 34 Third Analog Output Selection.................................................55
Figure 35 Relay Module ...........................................................................57
Figure 36 RS-422/485 Module .................................................................58
Figure 37 4-Wire RS-485 Bus ..................................................................60
Figure 38 2-Wire RS-485 Bus ..................................................................61
Figure 39 LAN Interface Module...............................................................63
Figure 40 WLAN Interface Module...........................................................64
Figure 41 Data Logger Module.................................................................66
Figure 42 Pinout of the Optional 8-Pin Connector....................................67
Figure 43 Basic Display............................................................................70
Figure 44 Graphical Display.....................................................................70
Figure 45 Graphical Display with Data Logger.........................................71
Figure 46 Main Menus..............................................................................72
Figure 47 Alarm Limits Shown on Graph Screen.....................................76
Figure 48 Display Alarm Active ................................................................76
Figure 49 Display Alarms .........................................................................77
Figure 50 Modifying an Alarm Limit..........................................................77
Figure 51 Service Port Connector and User Port Terminal
on Motherboard........................................................................79
Figure 52 Connection Example between PC Serial Port and
User Port..................................................................................80

User's Guide ______________________________________________________________________
8 ___________________________________________________________________ M210566EN-J
Figure 53 Network Interface Menu ...........................................................84
Figure 54 IP Configuration Menu..............................................................84
Figure 55 Wireless LAN Settings..............................................................87
Figure 56 Entering Network SSID.............................................................87
Figure 57 Selecting the Wireless Network Type.......................................87
Figure 58 Web Configuration Interface for LAN .......................................90
Figure 59 Opening a Serial Connection....................................................91
Figure 60 Opening a Telnet Connection...................................................92
Figure 61 Device Information on Display...............................................107
Figure 62 Current/Voltage Switches of Output Modules ........................120
Figure 63 Measurement-Based Relay Output Modes............................126
Figure 64 FAULT/ONLINE STATUS Relay Output Modes.....................128
Figure 65 Relay Indicators on Display....................................................130
Figure 66 Decrease of Sensor Gain.......................................................133
Figure 67 Purge Buttons on Motherboard ..............................................135
Figure 68 Chemical Purge Settings........................................................135
Figure 69 Performing Chemical Purge ...................................................136
Figure 70 Serial Interface Settings .........................................................141
Figure 71 IP Configuration......................................................................143
Figure 72 Wireless LAN Settings............................................................143
Figure 73 Communication Protocol ........................................................144
Figure 74 MODBUS Counters................................................................146
Figure 75 Changing the Sensor..............................................................150
Figure 76 Error Indicator and Error Message.........................................151
Figure 77 Adjustment and Purge Buttons...............................................156
Figure 78 Adjustment Menu....................................................................156
Figure 79 Selecting Point 1 Reference Type..........................................158
Figure 80 Accuracy over Temperature Range........................................166
Figure 81 Accuracy in Dewpoint Measurement......................................169
Figure 82 Transmitter Body Dimensions ................................................175
Figure 83 WLAN Antenna Dimensions...................................................176
Figure 84 HMT331 Fixed Probe Dimensions..........................................177
Figure 85 HMT331 Short Cable Probe Dimensions...............................177
Figure 86 HMT333 Probe Dimensions ...................................................178
Figure 87 HMT334 Probe Dimensions ...................................................178
Figure 88 HMT335 Probe Dimensions ...................................................179
Figure 89 HMT337 Probe Dimensions ...................................................179
Figure 90 HMT338 Probe Dimensions ...................................................180
Figure 91 Optional Temperature Probe Dimensions..............................180
Figure 92 Duct Mounting Installation Kit.................................................181
Figure 93 Duct Mounting Installation Kit for T-Probe..............................182
Figure 94 Swagelok Installation Kit for RH-probe...................................183
Figure 95 Swagelok Installation Kit for T-Probe.....................................183
Figure 96 Cable Installation with Cable Gland .......................................184
Figure 97 Probe Installation with Cable Gland .......................................184
Figure 98 Vapor Tight Installation...........................................................185
Figure 99 Wall Mounting Installation.......................................................185
Figure 100 Climate Chamber Installation (not Available from Vaisala)....186
Figure 101 Example of Installation through Roof .....................................187
Figure 102 Installing the HMT338 Probe Through a Ball Valve
Assembly................................................................................188
Figure 103 Meteorological Installation Kit for Outdoor Installation...........190