Vaisala HMM100 User Manual

USER'S GUIDE
Vaisala HUMICAP® Humidity Module
M211024EN-C
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 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 ............................................................................ 5
About This Manual ................................................................... 5
Contents of This Manual ....................................................... 5
Version Information ............................................................... 6
Related Manuals ................................................................... 6
Documentation Conventions ................................................. 6
Safety ......................................................................................... 7
ESD Protection ...................................................................... 7
Recycling .................................................................................. 7
Regulatory Compliances ......................................................... 8
Patent Notice ............................................................................ 8
Trademarks ............................................................................... 8
License Agreement .................................................................. 8
Warranty .................................................................................... 9
CHAPTER 2
PRODUCT OVERVIEW ................................................................................ 11
Introduction to HMM100 Series Humidity Modules ............ 11
Basic Features and Options .................................................. 12
Probe Types ............................................................................ 13
Filter Types ............................................................................. 14
Catalytic VHP Filter ............................................................. 15
Installation Accessories ........................................................ 16
Probe Mounting Flange ....................................................... 16
Mounting Bracket with Lid ................................................... 17
Module Housing (IP65) ....................................................... 18
Probe Mounting Clamp ....................................................... 19
CHAPTER 3
INSTALLATION ............................................................................................ 21
Dimensions ............................................................................. 21
Installing the Module .............................................................. 22
Installing the Probe ................................................................ 23
Wiring ...................................................................................... 24
2-wire Output ....................................................................... 24
3-wire Output ....................................................................... 24
Verifying the Installation........................................................ 25
CHAPTER 4
OPERATION ................................................................................................. 27
Using the Service Port ........................................................... 27
Installing the Driver for the USB Cable ............................... 27
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Terminal Application Settings .............................................. 28
List of Serial Commands ....................................................... 30
Device Information and Status .............................................. 31
Show Device Information..................................................... 31
Show Quantities .................................................................. 32
Show Calibration Info .......................................................... 32
Show Analog Output Status ................................................ 32
Show Firmware Version ...................................................... 33
Serial Line Output Commands .............................................. 33
Start Measurement Output .................................................. 33
Stop Measurement Output .................................................. 33
Set Output Interval ............................................................... 34
Output a Reading Once ....................................................... 34
Calibration Commands .......................................................... 35
Calibrate Temperature Measurement ................................. 35
Calibrate Humidity Measurement ........................................ 36
View User Adjustment Parameters ..................................... 37
Set User Adjustment Parameters ........................................ 37
Zero the Trimmers ............................................................... 38
Calibrate Analog Output ...................................................... 39
Configuring Serial Line Operation ........................................ 40
Set Serial Line Settings ....................................................... 40
Set Terminal Echo ............................................................... 40
Set Module Address ............................................................ 41
Set Serial Interface Mode .................................................... 41
Configuring Measurement Parameters ................................ 42
Set Environmental Compensation Values ........................... 42
Set Temporary Pressure Compensation Value ................... 43
Configuring Analog Output ................................................... 44
Set Analog Output Mode ..................................................... 44
Select Analog Output Quantity and Scaling ........................ 45
Test the Analog Output........................................................ 45
Other Commands.................................................................... 47
Display Command List......................................................... 47
Enable Advanced Commands ............................................. 47
Display the Currently Active Errors ..................................... 47
Connecting to the Module in POLL Mode ........................... 48
Closing the Connection in POLL Mode ............................... 48
Save Changed Settings ....................................................... 48
Restore Saved Settings ....................................................... 49
Reset the Module ................................................................ 49
Restore Factory Settings ..................................................... 49
CHAPTER 5
MAINTENANCE ............................................................................................ 51
Changing the Filter ................................................................. 51
Changing the Sensor ............................................................. 51
Calibration ............................................................................... 53
Calibration and Adjustment Using Trimmers ...................... 54
Calibration and Adjustment Using Serial Line .................... 55
Temperature Calibration (CT) ............................................. 56
Humidity Calibration (CRH) ................................................. 58
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CHAPTER 6
TROUBLESHOOTING ................................................................................. 61
Analog Output Error Notification .......................................... 61
Solving Typical Problems...................................................... 62
Technical Support .................................................................. 63
Product Returns ..................................................................... 63
CHAPTER 7
TECHNICAL DATA ...................................................................................... 65
Specifications ......................................................................... 65
Performance ........................................................................ 65
Relative Humidity ........................................................... 65
Dewpoint Temperature .................................................. 65
Operating Environment ....................................................... 66
Inputs and Outputs .............................................................. 66
Mechanics ........................................................................... 67
Options and Accessories ...................................................... 68
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List of Figures
Figure 1 HMM100 Humidity Module with Probe ..................................... 12
Figure 2 Probe Types ............................................................................. 13
Figure 3 Filter Types ............................................................................... 14
Figure 4 Optional Probe Mounting Flange .............................................. 16
Figure 5 Mounting Bracket with Lid ........................................................ 17
Figure 6 Optional Module Housing ......................................................... 18
Figure 7 Aligning Mounting Clamp Slots ................................................. 19
Figure 8 Sliding the Lower Clamp Part ................................................... 19
Figure 9 Securing the Upper Clamp Part ................................................ 20
Figure 10 Tightening the Lower Clamp Part ............................................. 20
Figure 11 HMM100 Dimensions ............................................................... 21
Figure 12 Component Board (3-wire version)........................................... 22
Figure 13 Wiring for 2-wire Output ............................................................ 24
Figure 14 Wiring for 3-wire Output ............................................................ 24
Figure 15 PuTTY Terminal Application ..................................................... 29
Figure 16 Changing the Sensor ................................................................ 52
Figure 17 Trimmers for Offset and Gain ................................................... 54
Figure 18 Loop Supply Voltage Versus Loop Resistance ........................ 67
List of Tables
Table 1 Manual Revisions ....................................................................... 6
Table 2 Related Manuals ......................................................................... 6
Table 3 Quantities Measured by HMM100 ............................................ 11
Table 4 Filter Properties ........................................................................ 14
Table 5 HMM100 Default Serial Interface Setting ................................. 28
Table 6 Basic Serial Commands ........................................................... 30
Table 7 Advanced Serial Commands .................................................... 31
Table 8 Error Levels for Analog Output Modes ..................................... 61
Table 9 Troubleshooting Table .............................................................. 62
Table 10 HMM100 3-wire Model Current Consumption .......................... 66
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Chapter 1 _________________________________________________________ General Information
CHAPTER 1

GENERAL INFORMATION

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

About This Manual

This manual provides information for installing, operating, and maintaining Vaisala HUMICAP® Humidity Module HMM100.

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, advantages, and the product nomenclature of the HMM100.
- Chapter 3, Installation, provides you with information that is intended to help you install the HMM100.
- Chapter 4, Operation, contains information that is needed to operate the HMM100.
- Chapter 5, Maintenance, provides information that is needed in basic maintenance of the HMM100.
- Chapter 6, Troubleshooting, describes the analog output error notification behavior, some common problems, their probable causes and remedies, and provides contact information for technical support.
- Chapter 7, Technical Data, provides the technical data of the HMM100.
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Manual Code
Description
M211024EN-C
November 2013. Removed RHCAL command.
automatically.
M211024EN-B
October 2012. Previous version. Added VHP filter
specifications.
Manual Code
Manual Name
M211002EN
HMM100 Quick Reference Guide
M211078EN
Module Housing for Humidity Module HMM10 Quick Reference Guide
M211079EN
Mounting Bracket for Humidity Module HMM10 Quick Reference Guide
M211080EN
Mounting Flange for Humidity Probes Quick Reference Guide

Version Information

Table 1 Manual Revisions
Added information on which parameter changes must be saved separately and which are saved
option and new pictures to the installation instructions, edited commands and technical

Related Manuals

Table 2 Related Manuals
WARNING
CAUTION
NOTE

Documentation Conventions

Throughout the manual, important safety considerations are highlighted as follows:
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 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 highlights important information on using the product.
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Chapter 1 _________________________________________________________ General Information
Ground the product, and verify installation grounding periodically to minimize shock hazard.
Do or lead to malfunction.
Recycle all applicable material.
Dispose of the unit with regular household refuse.

Safety

The HMM100 module delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions:
WARNING
CAUTION
not modify the unit. Improper modification can damage the product

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 exposed components.
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.

Recycling

according to statutory regulations. Do not dispose of
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Regulatory Compliances

The HMM100 is in conformity with the provisions of the following EU directive(s):
- RoHS Directive
- WEEE Directive
The electromagnetic compatibility of the HMM100 has been tested according to the following product family standard:
EN61326-1 Electrical equipment for measurement, control and laboratory use - EMC requirements - for use in light industrial environments.
The Electrostatic Discharge test (EN 61000-4-2) was not applied to the open frame module. In the final product the module PC-board should be installed in a user restricted location / enclosure for continued ESD protection.

Patent Notice

The HMM100 is protected by the following patents and patent applications 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

Vaisala HUMICAP® is a registered trademark of Vaisala Oyj.
Windows® is a registered trademark of Microsoft Corporation in the United States and/or other countries.

License Agreement

All rights to any software are held by Vaisala or third parties. The customer is allowed to use the software only to the extent that is provided by the applicable supply contract or Software License Agreement.
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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
Quantity
Range
Relative humidity (RH)
0 ... 100%
Dewpoint (Td)
-20 ... +100 ºC (-4 ... +212 ºF)
CHAPTER 2

PRODUCT OVERVIEW

This chapter introduces the features, advantages, and the product nomenclature of the HMM100.

Introduction to HMM100 Series Humidity Modules

The HMM100 series humidity measurement modules are open frame modules intended for integration into environmental chambers and other chambers where high temperature tolerance is important. The modules provide a single analog output channel for relative humidity (RH) or dewpoint (Td). Dewpoint is the recommended quantity if the measurement environment has significant temperature differences.
Table 3 Quantities Measured by HMM100
All HMM100 modules include automatic temperature compensation across the operating temperature range using an integrated PT1000 sensor. No external temperature compensation should be applied to the output.
HMM100 modules do not incorporate probe heating or chemical purge functionality. If the measurement environment is prone to condensation, or likely to cause chemical contamination of the sensor, other Vaisala instruments may be more suitable to the application.
The cable and probe of the HMM100 are attached at the factory. They should remain connected to the module at all times; do not cut and re­connect the cable.
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0905-042
Figure 1 HMM100 Humidity Module with Probe

Basic Features and Options

- Vaisala HUMICAP® 180R humidity sensor
- Plastic or stainless steel probe
- Analog output options:
- 4 ... 20 mA loop powered (2-wire output model)
- 0 ... 20 mA or 0 ... 1 / 5 / 10 V (3-wire output model, user-configurable using service port)
- Cable lengths:
- 0.65 m, 1.55 m, or 2.9 m for plastic probe
- 1.55 m or 2.9 m for stainless steel probe
- Various filter types: see section Filter Types on page 14
- Optional installation accessories:
- Probe mounting flange
- Probe mounting clamp
- Mounting bracket with lid
- Module housing (IP65)
- Service port for maintenance
- Optional USB cable for easy access
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Probe Types

The HMM100 can be ordered with a plastic or stainless steel probe. The plastic probe is suitable for most applications.
Both probe types have the same operational temperature range. Note that the operational temperature range is also affected by the filter; see section Filter Types on page 14.
Figure 2 below shows the plastic probe with a membrane filter (top), and the stainless steel probe with a sintered stainless steel filter (bottom).
Figure 2 Probe Types
0909-021
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No.
Filter
Diameter
Pore Size
Temperature Range
1
Plastic grid filter
(fastest response time)
12 mm
-
-20 ... +80 ºC
(-4 ... +176 ºF)
2
Membrane filter
12 mm
0.2 µm
-20 ... +80 ºC
(-4 ... +176 ºF)
3
Porous PTFE filter
(general purpose)
12 mm
8 µm
-70 ... +180 ºC
(-94 ... +356 ºF)
4
Stainless steel
sintered filter
12 mm
38 µm
-70 ... +180 ºC
(-94 ... +356 ºF)
5
Catalytic VHP filter (VHP applications)
12 mm
38 µm
-70 ... +180 ºC
(-94 ... +356 ºF)

Filter Types

The available filters for HMM100 are shown in Figure 3 below. All filters are 12 mm in diameter, and can be used in both the plastic and stainless steel probe. Note the operational temperature range of each filter.
For order codes, see section Options and Accessories on page 68.
1204-001
Figure 3 Filter Types
Table 4 Filter Properties
The catalytic VPH filter is recommended for environments where vaporized hydgoren peroxide (VHP) is used. It is mechanically similar to the stainless steel sintered filter, but it can be identified by the line that has been machined to its base; see Figure 3 above. For more information, see section Catalytic VHP Filter on page 15.
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Catalytic VHP Filter

Vaporized hydrogen peroxide (VHP) is a gaseous form of hydrogen peroxide that is commonly used in decontamination and sterilization of environmental chambers. Hydrogen peroxide has relatively low saturation pressure which increases the possibility of saturation when used in humid conditions. When saturation conditions occur, liquid hydrogen peroxide will form on surfaces in the decontaminated space.
Vaisala HUMICAP® sensor is compatible with direct VHP exposure even at high concentrations and hundreds of VHP cycles up to saturation. The long term performance is very good at concentrations higher than typically used for sterilization. However, for the applications where full saturation is possible, Vaisala recommends using the catalytic VHP filter to protect the sensor and extend the calibration interval.
The catalytic filter is based on a generally known method where the H2O2 is split to H2O and O2. This reaction is produced by the catalyst layer that has been applied to the filter. As the filter prevents the VHP from reaching the humidity sensor, the sensor responds to humidity only. The catalytic filter affects the reading approximately +1 %RH at 300 pmm VHP, or +3 %RH at 900 ppm VHP (at 23 °C / 73.4 °F).
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Installation Accessories

For order codes of the installation accessories, see section Options and Accessories on page 68.

Probe Mounting Flange

The probe mounting flange is used to seal the cable pass-through in the chamber wall. The flange can also be used to hold the probe itself, in case the probe cannot be mouted on the chamber wall otherwise. This mounting is not ideal since leaving the probe cable completely outside the measurement environment may cause heat conduction that affects the measurement.
0911-109
Figure 4 Optional Probe Mounting Flange
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Mounting Bracket with Lid

The optional mounting bracket includes a metal backplate and a plastic lid for the component board. The bracket does not provide IP rated protection. The bracket can be installed on a DIN rail.
Figure 5 Mounting Bracket with Lid
0911-105
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Module Housing (IP65)

The optional module housing is an IP65 rated housing. The module is installed inside the housing in a mounting bracket (provided with the housing). The housing has two cable glands. A coaxial plug is provided for sealing the gland for the probe cable.
0911-096
Figure 6 Optional Module Housing
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Chapter 2 ___________________________________________________________ Product Overview

Probe Mounting Clamp

The optional mounting clamp makes it easy to install the probe on the wall of the measurement environment. The probe can be detached for calibration simply by loosening the lower screw.
Installing the entire probe in the measurement environment prevents heat conduction to the sensor, and is the recommended installation method.
To mount the HMM100 probe to the mounting clamp:
1. Align the slots on the clamp parts as shown in Figure 7 below.
1209-001
Figure 7 Aligning Mounting Clamp Slots
2. Slide the lower clamp part over to the bottom end of the upper part
as shown in Figure 8 below.
1209-002
Figure 8 Sliding the Lower Clamp Part
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3. Place the clamp to the intended location and secure the upper clamp part with a screw. See Figure 9 below.
1209-003
Figure 9 Securing the Upper Clamp Part
4. Place the probe in the clamp.
5. Tighten the lower clamp part with a screw as shown in Figure 10 below.
1209-004
Figure 10 Tightening the Lower Clamp Part
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