Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur télécharger pdf (Page 29)

Advanced Instruments, Inc

Repeat the OUTPUT ZERO OFFSET routine until the output is 4 mA .

Save the adjustment value by pressing the ENTER key or abort by pressing the MENU key.

After adjustment, the system returns to the SAMPLING mode.

Span Calibration Procedure

This procedure assumes a span gas under positive pressure and is recommended for a transmitter without

an optional sampling pump, which if installed downstream of the sensor should be placed in the OFF

position and disconnected so the vent is not restricted during calibration.

To assure an accurate calibration, the temperature and pressure of the span gas must closely match with

the sample gas.

For calibration purposes, use of the AUTO SAMPLE mode is recommended.

Access the MAIN MENU by pressing the MENU key.

Advance the reverse shade cursor using the ARROW keys to highlight AUTO SAMPLE.

Press the ENTER key to select the highlighted menu option.

The following displays appear:

MAIN MENU

AUTO SAMPLE

MANUAL SAMPLE

CALIBRATION

CONFIG ALARMS

BYPASS ALARMS

0.3 PPM

AUTO SAMPLING

0-10 PPM RANGE

76 F 100 KP

Return to the MAIN MENU by pressing the MENU key.

Advance the reverse shade cursor using the ARROW keys to highlight CALIBRATION.

Press the ENTER key to select the highlighted menu option.

Repeat to select SPAN CALIBRATE

The following displays appear:

MAIN MENU

AUTO SAMPLE

MANUAL SAMPLE

CALIBRATION

CONFIG ALARMS

BYPASS ALARMS

>>>

CALIBRATION

SPAN CALIBRATE

ZERO CALIBRATE

DEFAULT SPAN

DEFAULT ZERO

OUTPUT SPAN

OUTPUT ZERO

After selecting the SPAN CALIBRATION, enter appropriate span gas value.

Advance the reverse shade cursor using the ARROW keys to highlight the desired GAS

CONCENTRATION.

Press the ENTER key to select the highlighted menu option.

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Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur Page 29

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