Vaisala HUMICAP HMW90 SERIES User manual

USER'S GUIDE
Vaisala HUMICAP®Humidity and
Temperature Transmitters
HMW90 Series
M211399EN-F

PUBLISHED BY
Vaisala Oyj Phone (int.): [phone]
P.O. Box 26 Fax: [phone]
FI-00421 Helsinki
Finland
Visit our Internet pages at www.vaisala.com.
© Vaisala 2013
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............................................................................ 7
About This Manual ................................................................... 7
Contents of This Manual ....................................................... 7
Version Information ............................................................... 8
Related Manuals ................................................................... 8
Documentation Conventions ................................................. 8
Safety......................................................................................... 9
ESD Protection...................................................................... 9
Recycling .................................................................................. 9
Regulatory Compliances ....................................................... 10
Patent Notice .......................................................................... 10
Trademarks ............................................................................. 10
Software License.................................................................... 10
Warranty.................................................................................. 11
CHAPTER 2
PRODUCT OVERVIEW................................................................................ 13
Introduction to HMW90 Series .............................................. 13
HMW90 Series Transmitters.................................................. 14
Output Parameters Explained............................................... 15
Transmitter parts.................................................................... 16
CHAPTER 3
INSTALLATION............................................................................................ 21
Configuration Before Installation ......................................... 21
Configuration of Analog Output Models .............................. 21
DIP Switches of Analog Output Models ......................... 22
Relay Configuration in DIP Mode................................... 23
Configuration of Digital Output Models ............................... 25
DIP Switches of Digital Output Models .......................... 26
Addressing with BACnet Protocol .................................. 27
Addressing with Modbus Protocol.................................. 27
Selecting Location ................................................................. 28
Wiring ...................................................................................... 29
Wiring HMW92 .................................................................... 29
Wiring HMW93 .................................................................... 30
Wiring TMW92..................................................................... 31
Wiring TMW93..................................................................... 31
Connecting a Common AC Power Supply to Several
Transmitters ........................................................................ 32
Wiring HMW95 .................................................................... 33
Connecting Several Transmitters on Same
RS-485 Line (HMW95)................................................... 33

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CHAPTER 4
OPERATION .................................................................................................35
Display .....................................................................................35
Startup Screens...................................................................35
Measurement Screen ..........................................................36
Indicators on the Display .....................................................37
Service Port.............................................................................37
Connecting With an MI70 Indicator .....................................37
Connecting With a PC .........................................................38
Installing the Driver for the USB Service Cable .............38
Terminal Application Settings.........................................39
List of Serial Commands .......................................................41
Transmitter Information .........................................................42
Show Transmitter Information .............................................42
Show Transmitter Firmware Version ...................................42
Show Transmitter Serial Number ........................................42
Show Transmitter Status .....................................................43
Show Measured Parameters...............................................45
Show Command Help..........................................................45
Show Command List ...........................................................46
Measurement Settings ...........................................................46
Set Environmental Parameters ...........................................46
Select Units .........................................................................47
Analog Output Settings .........................................................47
Set Analog Output Mode .....................................................47
Set Analog Output Scaling ..................................................48
Set Output Clipping and Error Limit.....................................49
Display Settings......................................................................50
Select Parameters to Display ..............................................50
Serial Line Output Commands ..............................................51
Start Measurement Output ..................................................51
Stop Measurement Output ..................................................51
Output a Reading Once.......................................................52
Set Output Interval...............................................................52
Set Output Format ...............................................................53
Serial Line Settings ................................................................54
Set Remote Echo ................................................................54
Set Serial Line Response Time...........................................55
Relay Configuration in Custom Mode ..................................55
Set Relay Mode ...................................................................55
Set Relay Parameter and Limits..........................................56
Relay Configuration Examples ............................................57
Calibration and Adjustment Commands..............................58
Adjust Humidity Measurement ............................................58
Show Current RH Adjustment ........................................58
1-point Adjustment of RH Measurement ........................59
2-point Adjustment of RH Measurement ........................59
Clear User Adjustment of RH Measurement..................60
Adjust Temperature Measurement......................................60
Show Current T Adjustment ...........................................60
1-point Adjustment of T Measurement ...........................60
Clear User Adjustment of T Measurement.....................61
Enter Calibration and Adjustment Information ....................61
Testing Commands ................................................................62
Test Analog Outputs............................................................62

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Test Relay Operation .......................................................... 63
Other Commands ................................................................... 63
Enable Advanced Serial Commands .................................. 63
Reset Transmitter................................................................ 64
Set BACnet Parameters...................................................... 64
CHAPTER 5
MAINTENANCE ........................................................................................... 67
Periodic Maintenance ............................................................ 67
Cleaning .............................................................................. 67
Calibration and Adjustment ................................................. 68
Adjustment Using Display and Trimmers....................... 69
Adjustment Using an HM70 ........................................... 70
Adjustment Using a PC .................................................. 71
Repair Maintenance ............................................................... 72
Replacing the Measurement Module .................................. 72
CHAPTER 6
TROUBLESHOOTING ................................................................................. 75
Problem Situations................................................................. 75
Error Messages ...................................................................... 76
Error Messages on the Display ........................................... 76
Error Messages on the Serial Line...................................... 76
View Currently Active Errors .......................................... 76
View Error Table ............................................................ 77
Error State............................................................................... 78
Reverting to Factory Settings ............................................... 79
Reverting to Factory Settings Using DIP Switches ............. 79
Reverting to Factory Settings Using Service Port............... 80
Technical Support .................................................................. 81
Product Returns ..................................................................... 81
CHAPTER 7
TECHNICAL DATA ...................................................................................... 83
Specifications ......................................................................... 83
Spare Parts and Accessories................................................ 85
Dimensions in mm ................................................................. 86
APPENDIX A
BACNET REFERENCE................................................................................ 87
BACnet Protocol Implementation Conformance
Statement ................................................................................ 87
Device Object.......................................................................... 90
Object_Identifier .................................................................. 91
Object_Name ...................................................................... 91
System_Status .................................................................... 91
Protocol_Services ............................................................... 92
Database_revision .............................................................. 92
Relative Humidity object........................................................ 92
Status Flags ........................................................................ 93
Reliability ............................................................................. 93

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Event State ..........................................................................93
Out of Service......................................................................93
Temperature Object................................................................94
Units.....................................................................................94
Status Flags.........................................................................94
Reliability .............................................................................95
Event State ..........................................................................95
Out of Service......................................................................95
Calculated Humidity Objects.................................................96
Status Flags.........................................................................97
Reliability .............................................................................97
Event State ..........................................................................97
Out of Service......................................................................97
Operation Pressure Object..................................................98
Present Value ......................................................................98
Status Flags.........................................................................98
Event State ..........................................................................98
Out of Service......................................................................98
Operation Altitude Object ......................................................99
Present Value ......................................................................99
Units.....................................................................................99
Status Flags.........................................................................99
Event State ..........................................................................99
Out of Service......................................................................99
BIBBs Supported ..................................................................100
Application Services Supported .........................................101
APPENDIX B
MODBUS REFERENCE .............................................................................103
Function Codes.....................................................................103
Register Map .........................................................................104
Data Encoding ...................................................................104
32-Bit Floating Point Format.........................................104
16-Bit Integer Format ...................................................105
Measurement Data (Read-Only) .......................................105
Status Registers (Read-Only) ...........................................106
Configuration Registers .....................................................106
Device Identification Objects ..............................................107
Exception Responses ..........................................................107

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List of Figures
Figure 1 HMW90 Series Transmitters .................................................... 13
Figure 2 Transmitter Parts - Outside ...................................................... 16
Figure 3 Opening the Transmitter........................................................... 17
Figure 4 Transmitter Parts – Inside (Analog Output Models)................. 18
Figure 5 Transmitter Parts – Inside (Digital Output Models) .................. 19
Figure 6 DIP Switch Settings of Analog Output Models ......................... 22
Figure 7 Relay High in DIP Mode (HMW93) .......................................... 24
Figure 8 Relay Low in DIP Mode (HMW93) ........................................... 24
Figure 9 DIP Switch Settings of Digital Output Models .......................... 26
Figure 10 Example of Transmitter Addressing ......................................... 27
Figure 11 Selecting Transmitter Location................................................. 28
Figure 12 Wiring HMW92 ......................................................................... 29
Figure 13 Three-Wire Wiring for HMW92................................................. 29
Figure 14 Wiring HMW93 ......................................................................... 30
Figure 15 Three-Wire Wiring for HMW93................................................. 30
Figure 16 Wiring TMW92.......................................................................... 31
Figure 17 Wiring TMW93.......................................................................... 31
Figure 18 Three-Wire Wiring for TMW93 ................................................. 31
Figure 19 Connecting a Common AC Power Supply (HMW93)............... 32
Figure 20 Wiring HMW95 ......................................................................... 33
Figure 21 Several Transmitters on Same RS-485 Line............................ 33
Figure 22 HMW93 Startup Screens.......................................................... 35
Figure 23 HMW93 Measurement Screen – Normal Operation ................ 36
Figure 24 HMW93 Measurement Screen – Problem With
Measurement ........................................................................... 36
Figure 25 PuTTY Terminal Application..................................................... 40
Figure 26 Relay Hi_Active in Custom Mode (HMW93) ............................ 57
Figure 27 Relay Lo_active in Custom Mode (HMW93)............................ 57
Figure 28 Trimmer Centering Screen ....................................................... 69
Figure 29 Trimmer Centering Screen ....................................................... 69
Figure 30 HTM10 and TM10 Modules...................................................... 72
Figure 31 Replacing the HTM10 Module (HMW93) ................................. 73
Figure 32 DIP Switches in Factory Reset Position................................... 79
Figure 33 DIP Switches in Factory Reset Position (HMW95) .................. 80
Figure 34 HMW90 Series Dimensions ..................................................... 86
Figure 35 Dimensions of the Mounting Base ........................................... 86

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List of Tables
Table 1 Manual Revisions .......................................................................8
Table 2 Related Manuals.........................................................................8
Table 3 HMW90 Series Transmitters ....................................................14
Table 4 Parameters Supported by HMW90 Series ...............................15
Table 5 Rotary Switch and Relay Setpoint ............................................23
Table 6 Serial Interface Settings ...........................................................39
Table 7 Basic Serial Commands ...........................................................41
Table 8 Advanced Serial Commands ....................................................41
Table 9 FORM Command Parameters..................................................54
Table 10 FORM Command Modifiers......................................................54
Table 11 Troubleshooting Table ..............................................................75
Table 12 Error Messages on the Display ................................................76
Table 13 Error Messages on the Serial Line ...........................................77
Table 14 Performance .............................................................................83
Table 15 Operating Environment.............................................................83
Table 16 Inputs and Outputs ...................................................................84
Table 17 Mechanics.................................................................................84
Table 18 HMW90 Series Spare Parts and Accessories..........................85
Table 19 Device Object Properties..........................................................90
Table 20 Relative Humidity Object Properties.........................................92
Table 21 Status Flags..............................................................................93
Table 22 Reliability ..................................................................................93
Table 23 Event State ...............................................................................93
Table 24 Temperature Object Properties ................................................94
Table 25 Status Flags..............................................................................94
Table 26 Reliability ..................................................................................95
Table 27 Event State ...............................................................................95
Table 28 Calculated Humidity Objects ....................................................96
Table 29 Calculated Humidity Object Properties.....................................96
Table 30 Status Flags..............................................................................97
Table 31 Reliability ..................................................................................97
Table 32 Event State ...............................................................................97
Table 33 Operation Pressure Object Properties .....................................98
Table 34 Status Flags..............................................................................98
Table 35 Operation Altitude Object Parameters......................................99
Table 36 Status Flags..............................................................................99
Table 37 BACnet Smart Sensor BIBBs Support....................................100
Table 38 BACnet Standard Application Services Support ....................101
Table 39 Supported Function Codes.....................................................103
Table 40 HMW90 Modbus Register Blocks...........................................104
Table 41 16-bit signed integer format details ........................................105
Table 42 HMW90 Modbus Measurement Data Registers.....................105
Table 43 HMW90 Modbus Status Registers .........................................106
Table 44 HMW90 Modbus Configuration Parameter Registers ............106
Table 45 HMW90 Modbus Device Identification....................................107
Table 46 HMW90 Modbus Exception Responses .................................107

Chapter 1 _________________________________________________________ General Information
VAISALA_________________________________________________________________________ 7
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the manual and HMW90 series
transmitters.
About This Manual
This manual provides information for installing, operating, and
maintaining HMW90 series transmitters. All transmitter models in the
HMW90 series are covered, which means that some information in the
manual is model-specific.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the manual
and HMW90 series transmitters.
- Chapter 2, Product Overview, introduces the features, advantages, and
the product nomenclature.
- Chapter 3, Installation, provides you with information that is intended
to help you install the HMW90 series transmitters.
- Chapter 4, Operation, contains information that is needed to operate
the HMW90 series transmitters.
- Chapter 5, Maintenance, provides information that is needed in basic
maintenance of the HMW90 series.
- Chapter 6, Troubleshooting, describes common problems, their
probable causes and remedies, and provides contact information for
technical support.
- Chapter 7, Technical Data, provides the technical data of the HMW90
series transmitters.
- Appendix A, BACnet Reference,describes the BACnet protocol
implementation of the HMW90 series digital transmitters.
- Appendix B, Modbus Reference, describes the Modbus protocol
implementation of the HMW90 series digital transmitters.

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Version Information
Table 1 Manual Revisions
Manual Code
Description
M211399EN-F
February 2013. This manual. Updated description
of DIP switch settings for the digital output models.
Updated description of UNIT command.
M211399EN-E
February 2013. Previous version. Updated
description of BACnet protocol implementation.
M211399EN-D
January 2013. Added HMW95 model. Added
description of BACnet and Modbus protocol
implementations. Updated configuration and wiring
instructions.
Related Manuals
Table 2 Related Manuals
Manual Code
Manual Name
M211511EN
HMW90 Series Quick Guide for Digital Output
models
M211398EN
HMW90 Series Quick Guide for Analog Output
Models
Documentation Conventions
Throughout the manual, important safety considerations are highlighted
as follows:
WARNING 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 or even
death.
CAUTION Caution warns you of a potential hazard. If you do not read and follow
instructions carefully at this point, the product could be damaged or
important data could be lost.
NOTE Note highlights important information on using the product.

Chapter 1 _________________________________________________________ General Information
VAISALA_________________________________________________________________________ 9
Safety
The HMW90 series transmitter delivered to you has been tested and
approved as shipped from the factory. Note the following precautions:
WARNING
Connect only de
-energized wires.
CAUTION
Do not modify the unit. Improper modification can damage the product
or lead to malfunction.
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. It is possible to damage the product,
however, 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.
- Always hold component boards by the edges and avoid touching the
component contacts.
Recycling
Recycle all applicable material.
Dispose of the unit acco
rding to statutory regulations.
Do not dispose of with regular household refuse.

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10 ___________________________________________________________________ M211399EN-F
Regulatory Compliances
The HMW90 series complies with the following performance and
environmental test standards:
- EMC-Directive
Conformity is shown by compliance with the following standards:
- 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.
Patent Notice
The HMW90 series is protected by, for example, the following patents
and their corresponding national rights:
Finnish patent 98861, French patent 6650303, German patent 69418174,
Japanese patent 3585973, UK patent 0665303, U.S. patent 5607564.
Trademarks
HUMICAP®is a registered trademark of Vaisala Oyj.
Windows®is a registered trademark of Microsoft Corporation in the
United States and/or other countries.
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.

Chapter 1 _________________________________________________________ General Information
VAISALA________________________________________________________________________ 11
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
VAISALA________________________________________________________________________ 13
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the features, advantages, and the product
nomenclature.
Introduction to HMW90 Series
The HMW90 series transmitters are wall-mount transmitters for building
automation applications. Transmitter models in the series share the
following common features:
- Detachable mounting base for easy installation and wiring.
- Display (visible or hidden behind the cover).
- Sliding cover for accessing maintenance functions.
- Adjustment trimmers.
- DIP switches for most common configuration tasks.
- RS-485 line for temporary service use with hand-held MI70 indicator
or PC.
- User exchangeable measurement module available as a spare part.
1111-062
Figure 1 HMW90 Series Transmitters

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14 ___________________________________________________________________ M211399EN-F
HMW90 Series Transmitters
Table 3 below lists the most important differences between the HMW90
series transmitter models. For technical specifications, see Chapter 7,
Technical Data, on page 83.
Table 3 HMW90 Series Transmitters
Product Code
Short Description
HMW92
Humidity and temperature transmitter with
- two current outputs (4 ... 20 mA)
- display hidden under sliding cover
HMW92D
Humidity and temperature transmitter with
- two current outputs (4 ... 20 mA)
- visible display
HMW93
Humidity and temperature transmitter with
- two voltage outputs (0 ... 5 V or 0 ... 10 V)
- relay
- display hidden under sliding cover
HMW93D
Humidity and temperature transmitter with
- two voltage outputs (0 ... 5 V or 0 ... 10 V)
- relay
- visible display
TMW92
Temperature transmitter with
- one current output (4 ... 20 mA)
- display hidden under sliding cover
TMW93
Temperature transmitter with
- one voltage output (0 ... 5 V or 0 ... 10 V)
- relay
- display hidden under sliding cover
HMW95
Humidity and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol
(DIP switch setting)
- display hidden under sliding cover
HMW95D
Humidity and temperature transmitter with
- digital output (isolated RS-485)
- BACnet MS/TP or Modbus protocol
(DIP switch setting)
- visible display
HMW90
TMW90
HMW90 series wall-mount transmitter that has been
customized at Vaisala. Check type label on transmitter
body and terminal label on the mounting base.
Note for customized transmitters with analog outputs:
Keep the transmitter in custom mode (DIP switch 8 set to
custom) to retain the custom configuration.

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VAISALA________________________________________________________________________ 15
Output Parameters Explained
Table 4 Parameters Supported by HMW90 Series
Parameter
Symbol
Unit(s)
Description
Temperature
T
°C
°F
Temperature in Celsius or
Fahrenheit scale.
Relative
humidity
RH
%
Ratio of the partial pressure of
water vapor in the air to the
saturation vapor pressure of air
at the current temperature.
Dewpoint
Td
°C
°F
Temperature at which the water
vapor in the air will condense into
water at the current pressure.
Dewpoint
Tdf
°C
°F
Same as Td, except when the
dewpoint is below 0 °C, the
transmitter outputs frostpoint (Tf)
instead of dewpoint.
Dewpoint
depression
dTd
°C
°F
Difference between ambient
temperature and dewpoint (Tdf).
Wet bulb
temperature
Tw
°C
°F
The minimum temperature that
can be reached by evaporative
cooling in the current conditions.
Absolute
humidity
a
g/m3
gr/ft3
Quantity of water in a cubic meter
(or cubic foot) of air.
Mixing ratio
x
g/kg
gr/lb
Ratio of water vapor mass per
kilogram (or pound) of dry air.
Enthalpy
h
kJ/kg
btu/lb
Sum of the internal energy of a
thermodynamic system.
NOTE
Humidity
parameters are not measured by TMW92, TMW93, and
TMW90
transmitters even though the parameters can be selected using
the service port (serial line and MI70 indic
ator use).

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Transmitter parts
1201-004
Figure 2 Transmitter Parts - Outside
where
1
=
Locking screw for mounting base.
Not included, M3×6 recommended.
2
=
Adjustment trimmers
3
=
Service port
4
=
Window for display (only in models where the display is visible)
5
=
Locking screw for slide. Not included, M3×6 recommended.
6
=
Display
7
=
Type label
8
=
Grip for slide
6
7
8
1
2
3
4
5

Chapter 2 ___________________________________________________________ Product Overview
VAISALA________________________________________________________________________ 17
1201-005
Figure 3 Opening the Transmitter
where
1
=
Push tab down with a screwdriver to open the transmitter.
1

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1201-006
Figure 4 Transmitter Parts – Inside (Analog Output Models)
where
1
=
Mounting base
2
=
Opening for cable (wiring from top)
3
=
Terminal label
4
=
Opening for cable (wiring from behind)
5
=
Orientation arrow – should point up after the mounting base has
been installed.
6
=
Place for zip tie (for cable strain relief)
7
=
Transmitter body
8
=
DIP switches for common configuration options; see section DIP
Switches of Analog Output Models on page 22.
9
=
HTM10 module with HUMICAP®sensor (HMW models) or
TM10 module (TMW models, measures temperature only).
10
=
Rotary switch for relay setpoint (only for models with relay);
see section Relay Configuration in DIP Mode on page 23.
Non - M et r ic
T d
0. .. 5 V
R e la y O n
R e la y H i g h
C u s to m
RelaySetPoint
Met ri c
R H
0. .. 1 0 V
R e la y O ff
R e la y Lo w
D IP
8
2
3
410
5
6
9
17