407910 Datasheet, PDF (7/7 Pages) Extech Instruments Corporation. – Heavy Duty Differential Pressure Manometer

Battery Replacement
When the low battery indicator LBT appears on the display or if the meter does not switch
on when the POWER button is pressed, it is necessary to replace the battery.
To replace the battery:
1. Remove the meter's rubber protective jacket by stretching it over the bottom of the
meter.
2. Pry open the battery compartment located on the back of the meter using a small coin
or screwdriver.
3. Replace the 9V alkaline battery
4. Replace the battery compartment cover and the protective jacket.
Useful Conversions
Useful conversion Factors
From
In of H₂O
In of H₂O
mm of Hg
To
In of Hg
Cm of Hg
In of H₂O
Multiplier
0.07355
2.54
0.03937
Calibration and Repair Services
Extech offers repair and calibration services for the products we sell. Extech also
provides NIST certification for most products. Call the Customer Service Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.
Support line [phone]
Technical support: Extension 200; E-mail: [e-mail]
Repair & Returns: Extension 210; E-mail: [e-mail]
Product specifications subject to change without notice
For the latest version of this User’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451
Copyright © 2005 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.
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Model 407910 - Version 2.0 - March 2005