User manual VAISALA DM70

[. . . ] USER'S GUIDE Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70 M010091EN-F PUBLISHED BY Vaisala Oyj P. O. Box 26 FIN-00421 Helsinki Finland Phone (int. ): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2007 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. ________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Confirm the selection by pressing Select. To change the date format, select from the alternatives and press Select. Use the For the desired time, select Time and press arrow buttons to change the time. To change the time format, select 12-hour clock and press On/Off. To return to the basic display, press Exit. 5. 6. Measurement Settings 0602-006 Figure 16 Measurement Settings Menu Automatic Auto-Calibration To turn the feature on, press Off. To turn the feature off, press Automatic Purge To turn the feature on, press Off. To turn the feature off, press Molecular Weight The ppmw M setting is used to give the molecular weight of the measured gas. This value is required in ppmw (weight) calculation. 40 __________________________________________________________________ M010091EN-F Chapter 5 _____________________________________________________________ User Interface The default values are 28. 96 for DMP74A/B (air) and 146. 06 for DMP74C (SF6). Purge Interval The time interval at which the automatic sensor purge is performed can be changed between 1 . . . For instructions, refer to section Changing Automatic Sensor Purge Interval on page 30. Device Information 0403-040 Figure 17 Device Information Basic information about the indicator and the probe is found as follows: 1. Open the menu by pressing Select Settings and press . Open. Select Device information and press The first display gives the information on the MI70 indicator. For details on the probe, press See Figure 18 below. To return to the basic display, press Exit. 5. VAISALA _______________________________________________________________________ 41 USER'S GUIDE____________________________________________________________________ 0403-041 Figure 18 Indicator and Probe Information The following numbers refer to Figure 18 above. 1 2 3 4 5 = = = = = Software version of the MI70 indicator Serial number of the MI70 indicator Probe type Software version of the probe Serial number of the probe Factory Settings The factory settings can be restored to clear all the changed settings and data memory of the indicator. Restoring factory settings does not affect the probe calibration. Open the menu by pressing Select Settings and press . To confirm the Select Factory settings and press selection, press Yes. Power is turned off automatically. When turning on DM70 again, the factory settings are restored. You will have to set the language, date, and time again. 42 __________________________________________________________________ M010091EN-F Chapter 6 ____________________________________ Field Calibration Check of Fixed Transmitters CHAPTER 6 FIELD CALIBRATION CHECK OF FIXED TRANSMITTERS To compare measurement readings or to read the output of a fixed transmitter directly on the DM70 display, connect DM70 to a fixed Vaisala transmitter using the connection cable accessories. Vaisala DRYCAP® Dewpoint and Temperature Transmitter Series DMT340 can be adjusted in laboratory conditions using DM70 as a reference. Please refer to Chapter 9, Calibration, Adjustment, and Maintenance on page 65 for more information. Field Calibration Check of DMT340/DMT242/DMT142 You can use DM70 to display the reading of DMT340, DMT242 or DMT142 and to compare the readings of DM70 and DMT340/DMT242/DMT142. To connect DMT340 you need connection cable 211339. [. . . ] Before beginning to work, find out whether any of the parts especially the probe, filter, or sampling cell - have been contaminated (radioactive, toxic, caustic, or contains a biological hazard, etc. ) during the measurement process. Adhere to the relevant regulations and take the necessary precautions when handling contaminated parts. Contaminated components, if any, must be decontaminated according to the relevant national regulations. The battery packs and/or alkaline batteries must be removed as described in section Installing and Removing the Battery Pack on page 13 (MI70) and in section Changing the Battery on page 57 (DSS70A). Dismantled parts must be separated according to the materials and disposed of according to the local laws and regulations. VAISALA _______________________________________________________________________ 79 USER'S GUIDE____________________________________________________________________ This page intentionally left blank. 80 __________________________________________________________________ M010091EN-F Chapter 11 ____________________________________________________ Technical Specifications CHAPTER 11 TECHNICAL SPECIFICATIONS Measured Variables Dewpoint Temperature Measurement range DMP74A DMP74B DMP74C Accuracy -50 . . . [. . . ]