RKI Instruments Gas Tracer 10,000 ppm - Manual (Page 61)

10,000 ppm Gas Tracer Operator’s Manual Using Maintenance Mode • 54
Performing a Bump Test
The bump menu item is not functionally available in the Gas Tracer
but will still appear in the Maintenance Mode menu.
Calibrating and Bump Testing the PPM Combustible
Sensor
The PPM sensor in the Gas Tracer cannot be calibrated using the
AUTO CAL
or ONE CAL menu items in the main menu or bump
tested using the BUMP menu item in the main menu. The PPM CAL
menu item must be used. In addition, a 6 inch humidifier tube must
be used to connect the zero air cylinder (if used for a WET fresh air
adjustment) and the ppm calibration cylinder to the instrument.
1. Use the AIR▲ or (SHIFT)▼ buttons to display the PPM CAL Mode
item.
2. Press and release the POWER ENTER button. The display will
indicate that the ppm sensor is warming up.
3. 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 zero air cylinder with a 6 inch humidifier
MAINTENANCE
PPM CAL
30
MAINTENANCE
sec
WARM UP