RKI Instruments GX-82A - Manual (Page 30)

Model GX-82A Instruction Manual
062796 RKI Instruments, Inc. 27
H
2
S and CO Span
1. Connect a H
2
S or CO calibration cylinder to the adapter.
2. From the calibration menu, scroll to “4.SET SPAN <H2S>,” or
“5.SET SPAN <CO>.” Press ON/OFF/ENTER to start the selected
calibration.
3. Adjust the calibration value following the procedure in Combusti-
bles Span, steps 2 - 6.
Note
The GX-82A will display up to 99 ppm H
2
S, but the limit of
linear response is 60 ppm, well above acceptable exposure
levels.
The GX-82A will display up to 499 ppm CO, but the limit
of linear response is 150 ppm, well above acceptable expo-
sure levels.
If any reading cannot be set to agree with the calibrating gas sample,
replace the sensor.