RKI Instruments GX-86A - Manual (Page 25)

Model GX-86A Instruction Manual
Page 24 Hayward, California (510) 441-5656
END screen will appear:
d.After the end screen, the display automatically returns to the
first calibration screen.
e Turn off the Four-Gas Cylinder and disconnect it from the valve.
f. Press (SHIFT)/▼ to scroll through the options to “7.RETURN,”
then press ON/OFF/ENTER to return to normal operation.
Combustibles Span
Note
The combustible gas sensor is a general hydrocarbon sensor
that responds to most flammable vapors and gases; the
response will vary depending upon the substance. For best
results, calibrate the instrument to the gas or vapor intended
to be detected. See Appendix A for Relative Response
Curves for common gases and vapors.
1. At the Calibration Mode screen, press (SHIFT)/▼ to scroll to “2.
SET SPAN <HC>.” Press ON/OFF/ENTER to select. The display
will show:
2. Turn on the combustible gas calibration source, for example a
50% LEL cylinder. Wait approximately 1 minute while the LEL
AUTO CALIBRATION
NORMAL END
HC CAL. 0LEL
GAS/ADJ./ENTER