Analytical Industries GPR-2500 S Oxygen Analyzer - Manual (Page 19)

19
Note: The monitor display defaults to the sampling mode when 30 seconds elapses without user interface.
20.9
%
MANUAL SAMPLING
25% RANGE
24.5 C 100 KPA
Menu Navigation
The four (4) pushbuttons located on the front of the monitor operate the micro-processor:
¾ green ENTER (select)
¾ yellow UP ARROW
¾ yellow DOWN ARROW
¾ blue MENU (escape)
Main Menu
Access the MAIN MENU by pressing the MENU key:
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATE
24.5 C 100 KPA
Range Selection
The GPR-2500S Ambient Oxygen Monitor is equipped with four (4) standard measuring ranges (see specification)
and provides users with a choice of sampling modes. By accessing the MAIN MENU, users may select either the
AUTO SAMPLING (ranging) or MANUAL SAMPLING (to lock on a single range) mode.
Caution: For ambient monitoring, the user must use the MANUAL SAMPLE option to lock on to the 0-25% range.
Also, when ambient monitoring for oxygen deficiency in a confined space or room do not calibrate the unit in the
atmosphere to be monitored. Use a certified span gas of a known oxygen concentration approximating 20.9%
oxygen balance nitrogen or clean compressed air.
Procedure - Auto Sampling:
Access the MAIN MENU by pressing the MENU key.
Advance the reverse shade cursor using the ARROW keys to highlight AUTO SAMPLE.