Vaisala Drycap DMT152 User manual

USER'S GUIDE
Vaisala DRYCAP®Dewpoint Transmitte
r
DMT152
M210865EN-D

PUBLISHED BY
Vaisala Oyj Phone (int.): [phone]
P.O. Box 26 Fax: [phone]
FIN-00421 Helsinki
Finland
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2008
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
Trademarks...............................................................................7
Warranty....................................................................................8
CHAPTER 2
PRODUCT OVERVIEW..................................................................................9
Introduction to Dewpoint Transmitter DMT152.....................9
Basic Features and Options..................................................10
Transmitter Structure.............................................................10
CHAPTER 3
FUNCTIONAL DESCRIPTION.....................................................................13
Advanced DRYCAP®Technology.........................................13
Auto-Calibration ..................................................................13
Sensor Purge ......................................................................14
Sensor Warming .................................................................14
CHAPTER 4
INSTALLATION............................................................................................15
Selecting the Location...........................................................15
Installing the Transmitter .....................................................16
Wiring ......................................................................................18
Connection Cables..............................................................19
Power Supply Requirements...............................................20
Sampling from a Process......................................................21
Pressure.........................................................................21
Leak tightness and materials.........................................21
Flow................................................................................22
Sampling Cell Types..............................................................22
DMT242SC Sampling Cell..................................................22
DMT242SC2 Sampling Cell with Swagelok Connectors ....22
DSC74 Sampling Cell with Quick Connector and
Leak Screw..........................................................................23

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DSC74B Two Pressure Sampling Cell................................24
DSC74C Two-Pressure Sampling Cell with Coil............26
CHAPTER 5
OPERATION.................................................................................................29
Serial Communication............................................................29
Connecting to the Serial Interface.......................................29
Installing the Driver for the USB Cable ..........................29
Terminal Application Settings..............................................30
List of Serial Commands .......................................................32
Device Information and Status..............................................33
Show Device Information ....................................................33
Show Transmitter Status.....................................................34
Show Firmware Version ......................................................34
Configuring Analog Outputs.................................................35
Limit Alarm...........................................................................36
Self-Diagnostic Alarm..........................................................37
Malfunction Alarm................................................................38
Select Analog Output Quantity and Scaling........................38
Configuring Serial Line Operation........................................39
Set Serial Line Settings.......................................................39
Set Serial Line Response Time...........................................39
Set Transmitter Address......................................................40
Format the Measurement Output........................................40
Select Unit...........................................................................42
Set Serial Interface Mode....................................................42
Configuring Measurement Parameters ................................43
Enable or Disable Sensor Purge.........................................43
Set Pressure Value for ppm Calculation .............................43
Set Molar Mass for ppmw Calculation.................................45
Serial Line Output Commands..............................................45
Start Measurement Output..................................................45
Stop Measurement Output..................................................46
Set Output Interval...............................................................46
Output a Reading Once.......................................................47
Troubleshooting and Maintenance Commands..................47
Display the Currently Active Errors .....................................47
Test Analog Outputs............................................................47
Calibrate Analog Output......................................................48
Extend Analog Output Range..............................................49
Other commands....................................................................49
Opening the Transmitter in POLL Mode .............................49
Closing the Connection to a Transmitter in POLL Mode.....50
Display Command List ........................................................50
Set Time..............................................................................50
Reset Transmitter................................................................51
Restore Factory Settings.....................................................51
CHAPTER 6
MAINTENANCE............................................................................................53
Cleaning the Transmitter.......................................................53

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Changing the Filter.................................................................53
Calibration and Adjustment ..................................................55
Field Check using DM70.....................................................55
Troubleshooting.....................................................................57
Error State...........................................................................58
Error Codes.........................................................................59
Unknown Serial Settings.....................................................60
Technical Support..................................................................60
Vaisala Service Centers.........................................................61
CHAPTER 7
TECHNICAL DATA......................................................................................63
Measured Variables................................................................63
Operating Environment .........................................................63
Outputs....................................................................................64
General....................................................................................64
Output Cable Specifications .................................................65
Spare Parts and Accessories................................................65
Dimensions in mm (inches) ..................................................66

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List of Figures
Figure 1 Dewpoint Transmitter DMT152.................................................11
Figure 2 DMT152 Installed Directly to Pipeline ......................................16
Figure 3 Removing the Transport Protection Cap..................................16
Figure 4 Installing the Transmitter..........................................................17
Figure 5 Connecting the Cable...............................................................17
Figure 6 Connectors I and II...................................................................18
Figure 7 Connector Pinout......................................................................19
Figure 8 Cable with Snap-On Connector................................................20
Figure 9 Cable with Threaded Connector...............................................20
Figure 10 Sampling Cells DMT242SC2 (left) and DMT242SC (right)......23
Figure 11 DSC74 Sampling Cell with Accessories...................................24
Figure 12 DSC74B....................................................................................25
Figure 13 Removing the Leak Screw........................................................25
Figure 14 Default Assembly of DSC74C ..................................................26
Figure 15 Alternative Assembly of DSC74C (for Tight Spaces)...............27
Figure 16 PuTTY Terminal Application.....................................................31
Figure 17 Filter Structure..........................................................................54
Figure 18 Supply Voltage Too Low for mA Output Error..........................56
Figure 19 DMT152 Dimensions................................................................66
List of Tables
Table 1 Manual Revisions .......................................................................6
Table 2 Related Manuals.........................................................................6
Table 3 Quantities Measured by the DMT152.........................................9
Table 4 DMT152 Default Serial Interface Setting..................................30
Table 5 DMT152 Serial Commands......................................................32
Table 6 FORM Command Quantities....................................................41
Table 7 FORM Command Modifiers......................................................41
Table 8 Pressure Conversion Coefficients............................................44
Table 9 Error codes...............................................................................59

Chapter 1 ________________________________________________________ General Information
VAISALA________________________________________________________________________ 5
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the manual and the Dewpoint
Transmitter DMT152.
About This Manual
This manual provides information for installing, operating, and
maintaining Dewpoint Transmitter DMT152.
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the
manual and the Dewpoint Transmitter DMT152.
- Chapter 2, Product Overview, introduces the features and
advantages of Dewpoint Transmitter DMT152.
- Chapter 3, Functional Description, describes the advanced
functionality of Dewpoint Transmitter DMT152, including the
auto-calibration, sensor purge and sensor warming functions.
- Chapter 4, Installation, provides you with information that helps
you install the Dewpoint Transmitter DMT152.
- Chapter 5, Operation, contains the operating instructions and serial
line commands for the Dewpoint Transmitter DMT152.
- Chapter 6, Maintenance, provides information on the maintenance
of Dewpoint Transmitter DMT152.
- Chapter 7, Technical Data, provides the technical data of Dewpoint
Transmitter DMT152.

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Version Information
Table 1 Manual Revisions
Manual Code Description
M210865EN-A March 2008 – First version.
M210865EN-B July 2008 – Changed default serial line mode.
Added instructions for field checking with
DM70. Added troubleshooting instructions.
M210865EN-C August 2008 – Updated analog output ranges.
M210865EN-D October 2008 – Revised instructions for alarm
configuration in chapter 5.
Related Manuals
Table 2 Related Manuals
Manual Code Manual Name
M210866EN-A Vaisala DRYCAP®Dewpoint Transmitter
DMT152 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 Dewpoint Transmitter DMT152 delivered to you has been tested
for safety and approved as shipped from the factory. Note the
following precautions:
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
Vaisala DRYCAP® Dewpoint Transmitter DMT152 is in conformity
with the following EU directives, including the latest amendments,
and with national legislation implementing these directives:
- EMC-Directive (2004/108/EC)
- RoHS-Directive (2002/96/EEC)
The conformity is shown by compliance with the following standards:
- EN 61326-1:1997 + A1:1998 + A2:2001 + A3:2003, Electrical
equipment for measurement, control and laboratory use - EMC
requirements - industrial environment.
- CISPR 22: 2006 Class B, EN 61000-4-2: 2001, EN 61000-4-3:
2002, EN 61000-4-4: 2004, EN 61000-4-5: 2001, EN 61000-4-6:
2003
- EN 50419 (2005-01)
Trademarks
DRYCAP®is a registered trademark of Vaisala.

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Warranty
Vaisala hereby represents and warrants all Products
manufactured by Vaisala and sold hereunder to be
free from defects in workmanship or material
during a period of twelve (12) months from the date
of delivery save for products for which a special
warranty is given. If any Product proves however to
be defective in workmanship or material within the
period herein provided Vaisala undertakes to the
exclusion of any other remedy to repair or at its
own option replace the defective Product or part
thereof free of charge and otherwise on the same
conditions as for the original Product or part
without extension to original warranty time.
Defective parts replaced in accordance with this
clause shall be placed at the disposal of Vaisala.
Vaisala also warrants the quality of all repair and
service works performed by its employees to
products sold by it. In case the repair or service
works should appear inadequate or faulty and
should this cause malfunction or nonfunction of the
product to which the service was performed Vaisala
shall at its free option either repair or have repaired
or replace the product in question. The working
hours used by employees of Vaisala for such repair
or replacement shall be free of charge to the client.
This service warranty shall be valid for a period of
six (6) months from the date the service measures
were completed.
This warranty is however subject to following
conditions:
a) A substantiated written claim as to any alleged
defects shall have been received by Vaisala
within thirty (30) days after the defect or fault
became known or occurred, and
b) The allegedly defective Product or part shall,
should Vaisala so require, be sent to the works
of Vaisala or to such other place as Vaisala may
indicate in writing, freight and insurance
prepaid and properly packed and labelled,
unless Vaisala agrees to inspect and repair the
Product or replace it on site.
This warranty does not however apply when the
defect has been caused through
a) normal wear and tear or accident;
b) misuse or other unsuitable or unauthorized use
of the Product or negligence or error in storing,
maintaining or in handling the Product or any
equipment thereof;
c) wrong installation or assembly or failure to
service the Product or otherwise follow
Vaisala's service instructions including any
repairs or installation or assembly or service
made by unauthorized personnel not approved
by Vaisala or replacements with parts not
manufactured or supplied by Vaisala;
d) modifications or changes of the Product as well
as any adding to it without Vaisala's prior
authorization;
e) other factors depending on the Customer or a
third party.
Notwithstanding the aforesaid Vaisala's liability
under this clause shall not apply to any defects
arising out of materials, designs or instructions
provided by the Customer.
This warranty is expressly in lieu of and excludes
all other conditions, warranties and liabilities,
express or implied, whether under law, statute or
otherwise, including without limitation any implied
warranties of merchantability or fitness for a
particular purpose and all other obligations and
liabilities of Vaisala or its representatives with
respect to any defect or deficiency applicable to or
resulting directly or indirectly from the Products
supplied hereunder, which obligations and
liabilities are hereby expressly cancelled and
waived. Vaisala's liability shall under no
circumstances exceed the invoice price of any
Product for which a warranty claim is made, nor
shall Vaisala in any circumstances be liable for lost
profits or other consequential loss whether direct or
indirect or for special damages.