RKI Instruments GX-86A User Manual
Page 22
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Model GX-86A Instruction Manual
RKI Instruments, Inc.
Page 21
3. Demand Zero
Press and hold the AIR/▲ switch on the control panel until a tone
sounds. Follow the instructions on the display:
The instrument will automatically set the LEL and toxics circuits
to zero and the O
2
circuit to 20.9%.
Calibration Start-up
1. Preparation
Assemble the calibration cylinder (Four-Gas for Auto Calibration,
or a specific cylinder for separate gas calibration), valve/regulator,
flowmeter, and adapter cup.
Note
Allow adequate time for the GX-86A to respond to changes
in adjustment. Adjust the controls in small increments, then
wait approximately 3 seconds for a change in reading.
Ignore alarms during the calibration procedure.
DEMAND ZERO
HOLD AIR KEY
ADJUSTING ZERO
HOLD AIR KEY
ZERO ADJUSTED
RELEASE AIR KEY
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