406800 V2.1 11/06
5
RS-232 PC Communications Interface
The meter has a built-in RS-232 serial port for use with the optional PC Interface Data
Acquisition Software/Hardware kit (407752).
Error Codes
An error message will appear on the display if the meter fails an internal diagnostic test.
Note
: Error messages E10L and E2UL will not display on the LCD. They will be transmitted
to the PC via the RS-232 cable.
1.
Err.1
: Pressure value is over the range.
2.
Err.2
: Pressure is below the range.
3.
Err.3
: DIF function, the differential pressure value is over range.
4.
Err.4
: Zero function, disconnect tubing or repair/replacement necessary.
5.
E10L
: RS-232 error, Pressure value is over the range.
6.
E2UL
: RS-232 error, Pressure is below the range.
Maintenance
Cleaning and storage
1. The meter should be cleaned with a damp cloth and mild detergent when necessary.
Do not use solvents or abrasives.
2. Store the meter in an area with moderate temperature and humidity (refer to the
operating and storage range in the specifications chart earlier in this manual).
Battery Replacement
When the battery power falls low, “
BAT
” will appear on the LCD. Replace the 9V battery by
removing the Phillips screw on the battery compartment door and accessing the battery
compartment. Ensure that the compartment cover is securely fastened when finished.
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.
