66 • Calibration Mode
Gas Tracer Operator’s Manual, CSA Version
5. To adjust the values on the screen, hold down the (SHIFT)
▼
button, then press
the DISPLAY(ADJ) button and release both. The %LEL sensor is shown here.
6. Use the AIR
▲
and (SHIFT)
▼
buttons to scroll through the sensors and select
the sensor whose calibration gas value you want to adjust.
7. Press and release the POWER ENTER button. The sensor’s calibration gas
value will begin to flash.
8. If necessary, use the AIR
▲
and (SHIFT)
▼
buttons to set the correct calibration
gas value.
9. Press and release POWER ENTER button to save the change.
10. Repeat steps 6 through 9 to set the correct values for any additional sensors.
11. After the last calibration gas value is set, use the AIR
▲
button to scroll to
ESCAPE and press POWER ENTER to return to the calibration gas values
screen.
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.
12. 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.
13. 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.
14. Connect the tubing from the demand flow regulator to the rigid tube on the
probe. Allow the gas to flow for one minute.
- - -
%LEL
MAINTENANCE
CH
4
AUTO CAL
0
20.9
0
%LEL
%
ppm
MAINTENANCE
CH
4
O
2
AUTO CAL
CO
