RKI Instruments Gas Tracer 10,000 ppm - Manual (Page 107)

10,000 ppm Gas Tracer Operator’s Manual Calibrating and Bump Testing the PPM Com-
on page 79. If you enter an incorrect password, an error screen will
display.
To return to normal operation, press and release the RESET SILENCE
button. You may then try to reenter Calibration Mode.
MAINTENANCE will appear along the top of the screen once you
have entered Calibration Mode. The first item in the calibration menu,
AIR CAL, displays.
The recommended calibration sequence for a quarterly calibration is
WET fresh air adjustment, WET span adjustment. The recommended
calibration sequence for a biannual calibration (every 6 months) is
DRY fresh air adjustment, WET fresh air adjustment, WET span
adjustment.
Performing a Wet Fresh Air Adjustment
This section describes how to perform a fresh air adjustment on the
PPM combustible gas sensor using the WET setting. Using the WET
setting and fresh air or a gas bag filled with zero air with a 6 inch
humidifier tube is appropriate for a quarterly calibration.
NOTE: It is recommended that you perform a fresh air adjust on the
ppm sensor using a zero air cylinder and the DRY setting
once every 6 months to maintain the accuracy of the ppm
combustible gas reading. When performing a DRY fresh air
adjustment, be sure to not use the humidifier tube. See
“Performing a Dry Fresh Air Adjustment” on page 102 for
instructions to perform a dry fresh air adjustment.
Err
PASSWORD
MAINTENANCE
AIR CAL