Analytical Industries GPR-7500 AIS Trace PPM Hydrogen Sulfide Analyzer - Manual (Page 27)

Advanced Instruments, Inc.
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4. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT SPAN.
5. Press the ENTER key to select the highlighted menu option.
The following displays appear and after 3 seconds the system returns to the SAMPLING mode:
Adjustment of 20 mA Analog Output
In rare instances the 4-20mA signal output may not agree to the reading displayed by the LCD. This feature
enables the user to adjust the 20mA signal output should the LCD display not agree.
Note: Adjust the 4mA signal output with the OUTPUT ZERO option described above.
1. Access the MAIN MENU by pressing the MENU key.
2. Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.
3. Press the ENTER key to select the highlighted menu option.
The following displays appear:
4. Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT SPAN.
5. Press the ENTER key to select the highlighted menu option.
The following display appears
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO
12 PPM
Auto Sampling
0-500 PPM Range
76 F 97 Kpa
LO1 0 PPM HI 40 PPM
FACTORY
DEFAULTS
SET
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATION
CONFIG ALARMS
BYPASS ALARMS
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
OUTPUT SPAN
OUTPUT ZERO