Analytical-industries GPR-1600 Series Trace PPB Oxygen Analyzer Manuel d'utilisateur télécharger pdf (Page 41)

Advanced Instruments Inc.

Span Gas Calibration: Assure there are no restrictions in vent line.

Regulate the pressure between 5-30 psig and set the flow rate to 2 SCFH for Fuel Cell sensors.

If the analyzer is equipped with a SAMPLE/BYPASS valve, place it in the BYPASS position.

Disconnect the sample gas line and install the span gas line.

Keep the SAMPLE/BYPASS valve in the BYPASS position.

Allow the span gas to flow for 1-2 minutes to purge the gas lines inside the analyzer.

Place the SAMPLE/BYPASS valve in the SAMPLE position.

If the analyzer is not equipped with a SAMPLE/BYPASS valve:

Allow the span gas to flow for 1-2 minutes to purge the air trapped in the span gas line.

Disconnect the sample gas line and install the purged span gas line.

Air Calibration: Access the interior of the analyzer by opening the

front door of the analyzer.

Using the 5/16 wrench supplied loosen but do not

remove the clamp bolt located in the center of

the bracket attached to bottom section with the

elbow fittings.

Rotate the upper section of the sensor housing

90º to disengage from the clamp.

Remove the upper section by pulling it straight up and let it rest on your 1

and 2

fingers.

With your other hand remove the oxygen sensor, place it in the upper section of the sensor housing

ensuring the PCB contacts the two gold pins and use your thumb to hold the sensor and upper

section of the sensor housing together.

The sensor is now exposed to ambient air, connected to the analyzer electronics and ready for

calibration.

Allow the sample gas to continue to flow if possible, otherwise close the FLOW valve but do not

disconnect the sample gas line.

Caution: Allow the reading to stabilize before proceeding. A premature SPAN CALIBRATION adjustment can result in erroneous

readings, see the Span Calibration Adjustment section above.

It is highly recommended that the analyzer be connected to an external recording device, if practical, to ensure that the

analyzer reading reaches a stable value (10-20 minutes) before accepting the span calibration.

Advance the cursor (*) to the “Span” option as illustrated and press the green ENTER key to accept the selection.

MAIN MENU

Sample

* Span

Zero

Alarm

System

Standby

Sample

80.0 PPM

Auto Range

85⁰F 100Kpa

0 to 10 PPM

12/31/07 12:00:00

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 54 55

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Analytical-industries GPR-1600 Series Trace PPB Oxygen Analyzer Manuel d'utilisateur Page 41

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