Model 421501 Version 1.3 February 2006
4
Support line (781) 890-7440
Technical support: Extension 200; E-mail: [email protected]
Repair & Returns: Extension 210; E-mail: [email protected]
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
Maintenance
Battery Replacement
When the low battery symbol appears on the display, replace the 9V battery. Follow the
steps below:
1.
Remove the rubber protective jacket that encases the meter. If this jacket is not
removed, the battery compartment cannot be accessed.
2.
Remove the two rear screws that secure the battery compartment.
3.
Open the compartment and replace the 9V battery.
4.
Secure the meter’s battery compartment and rubber jacket before using the
meter.
WARNING!
To avoid possible electrical shock, disconnect the thermocouple before
removing the battery cover.
Cleaning
Use a damp cloth with a mild detergent to periodically wipe the meter housing and display
area. Do not use abrasives or solvents to clean the meter.
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.
Copyright
©
2006 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.
