Analytical Industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter - Manual (Page 30)

Advanced Instruments, Inc
30
GAS CONCENTRATION
PERCENT
PPM
The following displays appear:
000.00 %
PRESS UP OR DOWN
TO CHANGE VALUE
ENTER TO SAVE
MENU TO RETURN
>>>
0.55%
SPAN
CLAIBRATION
ENTER TO CALIBRATE
MENU TO ABORT
Press the ENTER key to advance the underline cursor right or press the MENU key to advance the
underline cursor left to reach to the desired digit of the alarm value.
Repeat until the complete span value has been entered.
Press the ENTER key to accept SPAN CALIBRATION. After successful calibration, the analyzer will display
a message “PASSED CALIBRATION” and return to the Sample mode.
NOTE: The analyzer is allowed to accept calibration only when O2 reading is within 50% of the span gas
value. If the O2 reading is outside of this limit, by pressing ENTER to accept calibration will result in “FAILED
CALIBRATION” and the analyzer will return to the Sample mode without completing Span calibration.
PASSED CALIBRATION
OR
FAILED CALIBRATION
If the calibration is unsuccessful, return to the SAMPLING mode with span gas flowing through the
transmitter, make sure the reading stabilizes, reaches within 30-50% (see below) of the span gas value
(after factory default span setting) and repeat the calibration before concluding the equipment is defective.
Before disconnecting the span gas line and connecting the sample gas line (if the analyzer is not equipped
with a SPAN/SAMPLE vale option), flow the sample gas for 1-2 minutes to purge the air inside the sample
line.