Analytical Industries GPR-1800 AIS ATEX Trace PPM Oxygen Analyzer - Manual (Page 16)

Advanced Instruments Inc.
16
2. Advance the reverse shade cursor using the ARROW keys to highlight MANUAL SAMPLE.
3. Press the ENTER key to select the highlighted menu option.
4. The following display appears:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
>>>
MANUAL RANGE
25%
1%
1000 PPM
100 PPM
10 PPM
5. Advance the reverse shade cursor using the ARROW keys to highlight the desired MANUAL RANGE.
6. Press the ENTER key to select the highlighted menu option.
7. The following displays appears with the range selected and oxygen concentration of the sample gas:
MANUAL RANGE
25%
1%
1000 PPM
100 PPM
10 PPM
>>> 3.3
PPM
MANUAL SAMPLING
10 PPM RANGE
24.5 C 100 KPA
LO1 2PPM 10PPM HI2
The display will not shift automatically. Instead, when the oxygen reading (actually the sensor’s signal output) exceeds 110% of
the upper limit of the current range an OVER RANGE warning will be displayed.
Note: 3.3 PPM displayed on ranges of 1000 PPM and below, 0.0% displayed on ranges of 1% and above.
3.3
PPM
OVERRANGE
MANUAL SAMPLING
1000 PPM RANGE
24.5 C 100 KPA
LO1 2PPM 10PPM HI2
Once the OVER RANGE warning appears the user must advance the transmitter to the next higher range via the menu and
keypad Press MENU, select MANUAL SAMPLING, press ENTER, select the appropriate MANUAL RANGE and press ENTER again.