RKI Instruments Gas Tracer - Manual (Page 78)

70 • Calibration Mode Gas Tracer Operator’s Manual
5. Connect the tubing from the demand flow regulator to the rigid
tube on the probe. Allow the calibration gas to flow for one minute.
6. 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.
7. 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.
8. Disconnect the tubing from the Gas Tracer’s probe.
9. Repeat steps 3 through 8 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%.
10.After the last channel is calibrated, disconnect the calibration
tubing from the probe, then unscrew the demand flow regulator
from the calibration cylinder.
11.Use the AIR▲ and (SHIFT)▼ buttons to scroll to ESCAPE in the
ONE CAL menu.
12.Press and release the POWER ENTER button to exit ONE CAL.
13.With the ONE CAL menu option displayed, press the (SHIFT)▼
button until the NORMAL menu option is displayed.
14.Press and release the POWER ENTER button to return to
Measuring Mode.
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%LEL
MAINTENANCE
CH
4
ONE CAL