Analytical Industries GPR-2500 S Oxygen Analyzer - Manual (Page 20)

20
Press the ENTER key to select the highlighted menu option.
The display returns to the sampling mode WHEN THE SENSOR IS EXPOSED TO AMBIENT AIR:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATE
24.5 C 100 KPA
20.9%
AUTO SAMPLING
25% RANGE
24.5 C 100 KPA
The display will shift to the next higher range when the oxygen reading (actually the sensor’s signal output)
exceeds 99.9% of the upper limit of the current range. The display will shift to the next lower range when the
oxygen reading drops to 85% of the upper limit of the next lower range.
For example, if the monitor is reading 1% on the 0-10% range and an upset occurs, the display will shift to the 0-
25% range when the oxygen reading exceeds 9.9%. Conversely, once the upset condition is corrected, the display
will shift back to the 0-10% range when the oxygen reading drops to 8.5%.
Procedure - Manual Sampling:
Access the MAIN MENU by pressing the MENU key.
Advance the reverse shade cursor using the ARROW keys to highlight MANUAL SAMPLE.
Press the ENTER key to select the highlighted menu option.
The following displays appears:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATE
24.5 C 100 KPA
>>>
MANUAL RANGE
25%
10%
5%
1%
Advance the reverse shade cursor using the ARROW keys to highlight the desired RANGE.
Press the ENTER key to select the highlighted menu option.
The following display appears with the range selected and oxygen concentration of the sample gas:
20.9%
MANUAL SAMPLING
25% RANGE
24.5 C 100 KPA