Analytical Industries GPR-1900 Series Trace PPB Oxygen Analyzer - Manual (Page 16)

Advanced Instruments Inc.
16
Procedure:
1. With the span gas cylinder valve closed, install the regulator on the cylinder.
2. Open the regulator’s exit valve and partially open the pressure regulator’s control knob.
3. Open slightly the cylinder valve.
4. Loosen the nut connecting the regulator to the cylinder and bleed the pressure regulator.
5. Retighten the nut connecting the regulator to the cylinder
6. Adjust the regulator exit valve and slowly bleed the pressure regulator.
7. Open the cylinder valve completely.
8. Set the pressure between 5-30 psig using the pressure regulator’s control knob.
9. Caution: Do not exceed the recommended flow rate. Excessive flow rate could cause the backpressure on the sensor
and may result in erroneous readings and permanent damage to the sensor.
Establishing Power to the Electronics:
Once the power to the electronics is established, the digital display responds instantaneously. When power is applied, the
analyzer performs several diagnostic system status checks termed “START-UP TEST” as illustrated below:
START-UP TEST
ELECTRONICS – PASS
TEMP SENSOR – PASS
BAROMETRIC SENSOR – PASS
REV. 1.61
Note: The analyzer display defaults to the sampling mode when 30 seconds elapses without user interface.
Note: At installation expect the range to default to 25% range, thereafter, 100 ppm range but only if properly isolated.
3.3
PPM
AUTO SAMPLING
100 PPM RANGE
24.5 C
LO1 2 PPM 10 PPM HI2
Menu Navigation
The four (4) pushbuttons located on the front of the analyzer operate
the
micro-processor:
1. blue ENTER (select)
2. yellow UP ARROW
3. yellow DOWN ARROW
4. green MENU (escape)
Main Menu
Access the MAIN MENU by pressing the MENU key: