RKI Instruments Gas Tracer - Manual (Page 227)

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 gas reading will
be replaced by 3 dashes.
5. Press and release the POWER ENTER button. The single
calibration screen displays for the sensor you selected. The gas
reading flashes.
6. Connect the humidifier from the gas bag to the rigid tube on the
probe. Allow the calibration gas to flow for two minutes.
7. If necessary, use the AIR▲ and (SHIFT)▼ buttons to adjust the
reading to match the concentration listed on the calibration
cylinder.
If the reading already matches the concentration listed on the
calibration cylinder, press and release the AIR▲ button then press
and release the (SHIFT)▼ button so that the instrument sees a
change and resets the calibration date.
8. Press and release the POWER ENTER button to save the span
value. The LCD will indicate that the calibration has ended, then
the single calibration menu displays.
9. Disconnect the humidifier from the probe.
NOTE: Grasp the humidifier tube assembly by the clear tubing at the
end, not the humidifier tube itself.
10.Use the (SHIFT)▼ button to navigate to the ESCAPE menu item,
then press and release the POWER ENTER button to return to the
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ppm
MAINTENANCE
CH
4
ONE CAL
0
ppm
MAINTENANCE
CH
4
ONE CAL