RKI Instruments Gas Tracer - Manual (Page 229)

Gas Tracer Operator’s ManualCalibrating and Bump Testing the PPM Combustible Sensor
4. Use the AIR▲ or (SHIFT)▼ buttons to display the WET setting and
press and release the POWER ENTER button. The bump test gas
value will be displayed.
5. Before proceeding, confirm that the bump test gas value is the
same as the concentration in the calibration cylinder. If it is not,
adjust the bump test gas value by entering the AUTO CAL menu
item in the PPM CAL menu, changing the value there, and
reentering the BUMP menu.
6. Connect the humidifier from the gas bag to the rigid tube on the
probe and quickly press and release the POWER ENTER button.
The unit will begin counting down from 30.
7. When AUTO CAL in the BUMP--SET menu item in Maintenance
Mode is set to OFF:
• The instrument will display if the ppm combustible sensor
passed or failed with a P (pass) or an F (fail) to the right of the
gas.
1000
ppm
MAINTENANCE
CH
4
BUMP 30
P
ppm
MAINTENANCE
CH
4
BUMP