Analytical Industries GPR-2500 Series Oxygen Transmitter - Manual (Page 22)

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Procedure - Manual Sampling:
1. Access the MAIN MENU by pressing the MENU key.
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 displays appears:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATE
24.5 C 100 KPA
>>>
MANUAL RANGE
25%
10%
5%
1%
5. Advance the reverse shade cursor using the ARROW keys to highlight the desired RANGE.
6. Press the ENTER key to select the highlighted menu option.
7. The following display appears with the range selected and oxygen concentration of the sample gas:
3.3
%
MANUAL SAMPLING
10% RANGE
24.5 C 100 KPA
8. 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.
13.00
%
OVERRANGE
MANUAL SAMPLING
10% RANGE
24.5 C 100 KPA
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.