RKI Instruments Gas Tracer - Manual (Page 225)

Gas Tracer Operator’s ManualCalibrating and Bump Testing the PPM Combustible Sensor
If the concentration matches, go to step 11. If the concentration
does not match, continue with step 6.
6. To adjust the value on the screen, hold down the (SHIFT)▼ button,
then press the DISPLAY(ADJ) button and release both. The
calibration gas value turns into three dashes.
7. Press and release the POWER ENTER button. The sensor’s
calibration gas value will flash.
8. If necessary, use the AIR▲ and (SHIFT)▼ buttons to set the correct
calibration gas value.
9. Press and release the POWER ENTER button to save the change.
10.Use the AIR▲ or (SHIFT)▼ buttons to scroll to ESCAPE and press
and release POWER ENTER to return to the calibration gas value
screen.
11.With the calibration value screen displayed, press the POWER
ENTER button. AUTO CAL begins to flash and the current gas
reading is displayed. If you want to exit back to the main menu
without completing a calibration, press and release the DISPLAY
(ADJ) button.
12.Connect the humidifier from the gas bag to the rigid tube on the
probe. Allow the gas to flow for two minutes.
13.Press and release the POWER ENTER button to set the calibration
to the programmed values.
If the ppm sensor passed calibration, PASS displays along the
bottom of the screen, then the AUTO CAL menu item displays.
- - -
ppm
MAINTENANCE
CH
4
AUTO CAL
0
ppm
MAINTENANCE
CH
4
AUTO CAL