RKI Instruments Gas Tracer - Manual (Page 211)

Gas Tracer Operator’s Manual Calibrating the Gas Tracer • 203
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 tubing from the filled gas bag to the rigid tube on the
probe. Allow the calibration gas to flow for one minute.
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 tubing from the probe.
10.Repeat steps 4 through 9 for any other sensors you want to
calibrate. Make sure you use an appropriate calibration cylinder for
each sensor.
CAUTION: When calibrating the oxygen channel, verify the concentration
of oxygen listed on the cylinder’s label. For oxygen-free samples
(100% nitrogen for example), set the oxygen zero setting to
0.0%.
0
%LEL
MAINTENANCE
CH
4
ONE CAL
- - -
%LEL
MAINTENANCE
CH
4
ONE CAL