Analytical Industries GPR-2500 S Oxygen Analyzer - Manual (Page 25)

25
MAIN MENU
AUTO SAMPLE
MANUAL SAMPLE
CALIBRATE
24.5 C 100 KPA
>>>
CALIBRATION
SPAN CALIBRATE
ZERO CALIBRATE
DEFAULT SPAN
DEFAULT ZERO
24.5 C 100 KPA
Manual Span
The user must ascertain that the oxygen reading (actually the sensor’s signal output) has reached a stable value
within the limits entered below before entering the span adjustment. Failure to do so will result in an error.
Preparation - Required components: Refer to Installing Span Gas section above.
Procedure – Integral and Remote Sensor:
Caution: Do not change the factory setting until instructed to do in this manual.
Connect the calibration gas lines - review the illustration below and locate Item A-2344 Calibration Flow Through
Adapter and the installed Item FITN-1029 Connector, Barbed Tubing.
Review Span Gas Preparation section above – regulate the pressure and control the flow rate as directed.
Caution: When ambient monitoring of 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.
Apply a little lubricant to the o-ring, a dry o-ring can make insertion difficult, of the Calibration Flow Through
Adapter Assembly, A-2344.
Insert the flow through adapter into the throat of the sensor.
Connect the 1/8” ID Tygon tubing from the flow meter vent to Item #4 Connector, Barbed Tubing.
Proceed to Span Calibration section.
Legend:
1. CONN-1014 Sensor Cable
2. GPR-11-32-4R Oxygen Sensor
3. A-2079 Bracket Sensor Mounting
4. FITN-1029 Connector, Barbed Tubing
5. A-2344 Calibration Flow Through Adapter
(Calibration use only)
6. A-2781 Nut Sensor Retaining
Confirm the monitor is in the MANUAL SAMPLE mode –
Access the MAIN MENU by pressing the MENU key.
Advance the reverse shade cursor using the ARROW keys to highlight MANUAL SAMPLE.