Analytical Industries GPR-1600 Series Trace PPB Oxygen Analyzer - Manual (Page 39)

Advanced Instruments Inc.
39
ZERO CALIBRATION
IN PROGRESS . . .
5.00 PPM
After the oxygen reading has stabilized, press ENTER to complete the Zero Calibration. If the user attempts to initiate the ZERO
CALIBRATION function while the oxygen reading is above 50% of the most sensitive or lowest range, the system displays the
message “CALIBRATION FAILED” and returns to the “Sample” mode.
CALIBRATION
FAILED
CALIBRATION
COMPLETE