RKI Instruments Gas Tracer - Manual (Page 133)

Gas Tracer Operator’s Manual Using Maintenance Mode • 125
additional sensors.
15.After the last calibration value is set, use the AIR▲ button to scroll
to ESCAPE and press POWER ENTER to return to the calibration
gas values screens.
NOTE: The RKI Three Gas Cylinder typically contains 12% O
2
by
volume. Be sure to set the “OXY” reading to agree with the
concentration listed on the cylinder’s label, not zero.
16.Use the AIR▲ or (SHIFT)▼ button to select which sensor(s) you
want to calibrate, the standard 3 sensors or the %volume
combustible gas sensor.
The following instructions illustrate calibrating the standard 3
sensors first, then the %volume combustible gas sensor.
17.With the 3-gas calibration values screen displayed, press the
POWER ENTER button. AUTO CAL begins to flash and the
current gas readings are displayed. If you want to exit back to the
main menu without completing a calibration, press and release the
DISPLAY (ADJ) button.
18.Connect the tubing from the demand flow regulator to the rigid
tube on the probe. Allow the gas to flow for one minute.
19.Press and release the POWER ENTER button to set the calibration
to the programmed values.
If all channels passed calibration, PASS displays along the bottom
of the screen, then the calibration menu displays.
0
20.9
0
%LEL
%
ppm
MAINTENANCE
CH
4
O
2
AUTO CAL
CO