Vaisala HUMICAP MMT162 User manual

USER'S GUIDE
Vaisala HUMICAP
®
Moisture and
Temperature Transmitter for Oil
MMT162
M210934EN-B

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............................................................................5
About This Manual...................................................................5
Contents of This Manual.......................................................5
Version Information...............................................................6
Related Manuals...................................................................6
General Safety Considerations.............................................6
Feedback...............................................................................6
Product Related Safety Precautions......................................7
Recycling ..................................................................................7
Regulatory Compliances.........................................................7
Electromagnetic Compatibility...............................................7
Trademarks...............................................................................8
License Agreement..................................................................8
Warranty....................................................................................8
CHAPTER 2
PRODUCT OVERVIEW..................................................................................9
Introduction to MMT162...........................................................9
Basic Features and Options..................................................10
Transmitter Structure.............................................................10
Typical Applications ..............................................................12
Method Used for Measuring Moisture in Oil........................12
Lubrication Oil .....................................................................12
Transformer Oil...................................................................13
CHAPTER 3
INSTALLATION............................................................................................15
Installing the Transmitter ......................................................15
Wiring ......................................................................................17
Connection Cables..............................................................18
Power Supply Requirements...............................................20
CHAPTER 4
OPERATION.................................................................................................21
Getting Started .......................................................................21
Analog Output Operation Modes..........................................21
Normal Operation Mode and Malfunction Alarm.................22
Limit Alarm ..........................................................................22
Serial Communication ...........................................................23
Connecting to Serial Interface.............................................23
Installing the Driver for the USB Cable ...............................24
Terminal Program Settings .................................................25

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List of Serial Commands .......................................................27
Device Information and Status..............................................28
Show Device Information ....................................................28
Show Firmware Version ......................................................28
Configuring Serial Line Operation........................................29
Set Serial Line Settings.......................................................29
Set Serial Line Response Time...........................................30
Set Transmitter Address......................................................30
Format Measurement Output..............................................30
Select Unit...........................................................................32
Set Serial Interface Mode....................................................32
Configuring Measurement Parameters ................................32
Select Analog Output Quantity and Scaling........................32
Set Analog Output Mode (mA/V).........................................33
Calibrate Analog Output......................................................34
Set Malfunction Alarm Output for Analog Channels............34
Set Alarm Limits for Analog Outputs / LED Indication.........35
Set Voltage for LED Alarm..................................................35
Extend Analog Output Range..............................................36
Serial Line Output Commands..............................................36
Start Measurement Output..................................................36
Stop Measurement Output..................................................36
Set Output Interval...............................................................37
Output Reading Once..........................................................37
Troubleshooting Commands.................................................38
Display the Currently Active Errors .....................................38
Test Analog Outputs............................................................38
Other Commands ...................................................................39
Opening the Transmitter in POLL Mode .............................39
Closing the Connection to a Transmitter in POLL Mode.....39
Display Command List ........................................................40
Reset Transmitter................................................................41
Restore Factory Settings.....................................................41
ppm Conversion .....................................................................41
MMT162 ppm Conversion for Transformer Oils..................41
Conversion Model with Average Coefficients......................42
Conversion Model with Oil-specific Coefficients .................42
Setting Oil Coefficients Using Serial Line............................43
OIL..................................................................................43
Determination of Oil-Specific Coefficients...........................43
CHAPTER 5
MAINTENANCE............................................................................................47
Cleaning...................................................................................47
Changing the Probe Filter......................................................48
Changing the Sensor .............................................................48
Error States.............................................................................48
Technical Support ..................................................................49
Return Instructions ................................................................49
Vaisala Service Centers.........................................................50
CHAPTER 6
CALIBRATION AND ADJUSTMENT...........................................................51

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MM70 in Checking and Adjusting.........................................52
One-Point Relative Humidity Adjustment............................52
Using Serial Line.................................................................52
CRH ...............................................................................52
Using MI70..........................................................................53
One-Point Temperature Adjustment ....................................56
Using Serial Line.................................................................56
CT ..................................................................................56
Using MI70..........................................................................57
Analog Output Adjustment....................................................58
CHAPTER 7
TECHNICAL DATA......................................................................................59
Measured Values....................................................................59
Operating Environment .........................................................60
Inputs and Outputs ................................................................60
Mechanics...............................................................................60
Spare Parts and Accessories................................................61
Dimensions in mm (inches) ..................................................62
List of Figures
Figure 1 Moisture and Temperature Transmitter for Oil MMT162..........11
Figure 2 The Water Solubility of Transformer Oils versus Temperature14
Figure 3 Removing the Transportation Protection Cap..........................15
Figure 4 Installing the Transmitter..........................................................16
Figure 5 Connecting the Cable...............................................................16
Figure 6 Connectors I and II...................................................................17
Figure 7 Connector Pinout......................................................................17
Figure 8 Cable with Snap-On Connector ...............................................18
Figure 9 Cable with Threaded Connector ..............................................18
Figure 10 Cable with 90° Angle Threaded Connector..............................19
Figure 11 LED Cable................................................................................19
Figure 12 USB Serial Interface Cable ......................................................20
Figure 13 PuTTY Terminal Application ....................................................26
Figure 14 Main Menu................................................................................53
Figure 15 Functions Menu........................................................................53
Figure 16 Metal Housing Transmitter Dimensions...................................62
Figure 17 Plastic Housing Transmitter Dimensions .................................63
List of Tables
Table 1 Manual Revisions.......................................................................6
Table 2 Related Manuals ........................................................................6
Table 3 Quantities Measured and Calculated by MMT162.....................9
Table 4 Default Serial Interface Settings...............................................23
Table 5 Serial Line Commands.............................................................27
Table 6 Modifiers...................................................................................31
Table 7 Analog Output Modes...............................................................33
Table 8 Error Messages........................................................................49

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Chapter 1 ________________________________________________________ General Information
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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®Moisture and Temperature Transmitter
for Oil MMT162.
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
- Chapter 3, Installation, provides you with information that is intended
to help you install the product.
- Chapter 4, Operation, provides information that is needed in basic
maintenance of the product.
- Chapter 5, Maintenance, provides information that is needed in basic
maintenance of the product.
- Chapter 6, Calibration and Adjustment, provides information that is
needed in calibration and adjustment of the product.
- Chapter 7, Technical data, provides the technical data of the product.

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Version Information
Table 1 Manual Revisions
Manual Code Description
M210934EN-A September 2008 - First version
M210934EN-B March 2009 - Updated cable specification
Related Manuals
Table 2 Related Manuals
Manual Code Manual Name
M210935EN-A Vaisala HUMICAP®Moisture and Temperature
Transmitter for Oil MMT162 Quick Reference 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.
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]

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Product Related Safety Precautions
The Vaisala HUMICAP®Moisture and Temperature Transmitter for Oil
MMT162 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.
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®Moisture and Temperature Transmitter for Oil
MMT162 complies with the following performance and environmental
test standards:
Electromagnetic Compatibility
EN 61326-1:2006-04 + Am1:1998, Electrical equipment for
measurement, control and laboratory use - EMC requirements - Industrial
environment.
CISPR16/22 Class B, EN/IEC 61000-4-2, EN/IEC 61000-4-3, EN/IEC
61000-4-4, EN/IEC 61000-4-5, EN/IEC 61000-4-6

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Trademarks
HUMICAP®is a registered trademark of Vaisala Oyj.
Microsoft®, Windows®, Windows®2000, Windows Server®2003,
Windows®XP, and Windows®Vista are registered trademarks 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.
Warranty
For certain products Vaisala normally gives a limited one-year 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.