Vaisala HUMICAP HMM212 User manual

USER'S GUIDE
Vaisala HUMICAP
®
Humidity and
Temperature Module
HMM212
U338EN-1.2

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 2009
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.

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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
General Safety Considerations.............................................8
Feedback...............................................................................9
Product Related Safety Precautions......................................9
ESD Protection .........................................................................9
Recycling ................................................................................10
Regulatory Compliances.......................................................10
Patent Notice ..........................................................................11
Trademarks.............................................................................11
Warranty..................................................................................11
CHAPTER 2
PRODUCT OVERVIEW................................................................................13
Introduction to HMM212 ........................................................13
CHAPTER 3
TO BE NOTED WHEN MEASURING HUMIDITY........................................15
CHAPTER 4
INSTALLATION............................................................................................17
Selecting Location .................................................................17
Dimensions.............................................................................18
Electrical Connections...........................................................18
CHAPTER 5
CALIBRATION.............................................................................................21
One-Point Humidity Calibration............................................21
With the HMI41 Indicator and Calibration Cable.................21
With Pushbuttons and a Jumper.........................................23
Two-Point Humidity Calibration...........................................23
Two-Point Humidity Calibration Procedure....................23
Calibration Table....................................................................25
Temperature Calibration........................................................26
Temperature Calibration of an RH and T Module...............26
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CHAPTER 6
MAINTENANCE............................................................................................27
Replacing the HUMICAP®180R Sensor and the Filter.........27
Replacing Consumables........................................................27
Parts List for Consumables .................................................27
CHAPTER 7
TROUBLESHOOTING..................................................................................29
Troubleshooting Procedure ..................................................29
Technical Support ..................................................................29
Return Instructions ................................................................30
Vaisala Service Centers.........................................................31
CHAPTER 8
TECHNICAL DATA ......................................................................................33
Specifications .........................................................................33
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List of Figures
Figure 1 Measurement Error at 100 %RH when the Temperature
Difference between the Ambient Air and the Sensor is 1 °C...16
Figure 2 Dimensions in mm (inches)......................................................18
Figure 3 Electrical Connections of HMM212 Module.............................19
Figure 4 Calibration Connector for the HMI41........................................22
Figure 5 Calibration Pins and Pushbuttons............................................24
Figure 6 Offset and Gain Calibration Examples.....................................26
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List of Tables
Table 1 Manual Revisions .......................................................................8
Table 2 Related Manuals.........................................................................8
Table 3 Emission Tests .........................................................................10
Table 4 Immunity Tests .........................................................................10
Table 5 Greenspan's Calibration Table with Output Values According
to the Chosen Scale.................................................................25
Table 6 Available Spare Parts...............................................................27
Table 7 Relative Humidity Specifications ..............................................33
Table 8 Temperature Specifications......................................................33
Table 9 Analog Output Specifications ...................................................33
Table 10 General Specifications..............................................................34
Table 11 Power Supply Specifications....................................................34
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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 and Temperature Module
HMM212.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the manual
and the product.
- Chapter 2, Product Overview, introduces the features and advantages
of the Vaisala HUMICAP®Humidity and Temperature Module
HMM212.
- Chapter 3, To Be Noted When Measuring Humidity, describes issues
that need to be noted in the measurement of humidity.
- Chapter 4, Installation, provides you with information that is intended
to help you install this product.
- Chapter 5, Calibration, contains information that is needed to calibrate
this product.
- Chapter 6, Maintenance, provides information that is needed in basic
maintenance of the product.
- Chapter 7, Troubleshooting, describes common problems, their
probable causes and remedies, and contact information for technical
support.
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Version Information
Table 1 Manual Revisions
Manual Code Description
U338EN-1.1 June 1999
U338EN-1.2 This manual, December 2009 - HUMICAP®sensor
type has been changed.
Related Manuals
Table 2 Related Manuals
Manual Code Manual Name
M210316EN-A Vaisala HUMICAP®Indicator HMI41 and Probes
HMP41/45/46 User's Guide
M210777EN-B Calibration of Digital Transmitters with Vaisala
HUMICAP®Humidity Indicator HMI41 Cables
19164ZZ and 25917ZZ User's Guide
M210185EN-C Vaisala Humidity Calibrator HMK15 User's Guide
General Safety Considerations
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.
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Chapter 1 ________________________________________________________ General Information
Feedback
Vaisala Customer Documentation Team welcomes your comments and
suggestions on the quality and usefulness of this publication. If you find
errors or have other suggestions for improvement, please indicate the
chapter, section, and page number. You can send comments to us by e-
mail: [email protected]
Product Related Safety Precautions
The Vaisala HUMICAP®Humidity and Temperature Module HMM212
delivered to you has been tested for safety and approved as shipped from
the factory. Note the following precautions:
WARNING Ground the product, and verify outdoor installation grounding
periodically to minimize shock hazard.
CAUTION Do not modify the unit. Improper modification can damage the product
or lead to malfunction.
CAUTION Do not touch the sensor element.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent damage to
electronic circuits. Vaisala products are adequately protected against
ESD for their intended use. However, it is possible to damage the product
by delivering electrostatic discharges when touching, removing, or
inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages yourself:
- Handle ESD sensitive components on a properly grounded and
protected ESD workbench. When this is not possible, ground yourself
to the equipment chassis before touching the boards. Ground yourself
with a wrist strap and a resistive connection cord. When neither of the
above is possible, touch a conductive part of the equipment chassis
with your other hand before touching the boards.
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- Always hold the boards by the edges and avoid touching the
component contacts.
Recycling
Recycle all applicable material.
Dispose of batteries and the unit according to statutory regulations. Do
not dispose of with regular household refuse.
Regulatory Compliances
The Vaisala HUMICAP®Humidity and Temperature Module HMM212
complies with the following performance and environmental test
standards:
The emission and immunity tests have been performed according to
standard EN61326-1.
Table 3 Emission Tests
Test Setup According to
RF field emission CISPR 22 Class B (EN55022)
Conducted emissions CISPR 22 B (EN55022)
Table 4 Immunity Tests
Test Setup According to
Electrostatic discharge IEC 1000-4-2 (EN 61000-4-2)
Fast transient burst IEC 1000-4-4 (EN 61000-4-4)
RF field immunity IEC 1000-4-3 (EN 61000-4-3)
Conducted RF immunity
NOTE: cable length max. 8
meters
IEC 1000-4-6 (EN 61000-4-6)
Surge IEC 1000-4-5 (EN 61000-4-5)
Voltage dips, short
interrupts IEC 1000-4-11 (EN 61000-4-11)
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