User Manual

HD755 V1.1 08/08
7
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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 Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451
Battery Replacement
When the low battery indicator BAT 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. Open the battery compartment by sliding the meter’s rear panel in the direction of the
embossed arrow.
2. Replace the 9V alkaline battery
3. Replace the battery compartment cover.
Conversions
Useful conversion Factors
From To Multiplier
in of H
2
O in of Hg 0.07355
in of H
2
O cm of Hg 2.54
mm of Hg in of H
2
O 0.03937
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX [phone] - TestEquipmentDepot.com
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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