Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur télécharger pdf (Page 28)

Advanced Instruments, Inc

Analog Output with Zero O2

In rare instances the 4-20mA signal output may not agree to the reading displayed on the LCD. This feature

enables the user to adjust the 4mA signal output when the LCD displays 00.00.

Note Adjust the 20mA signal output with the OUTPUT SPAN option described below.

Access 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 and 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

Advance the reverse shade cursor using the ARROW keys to highlight DEFAULT ZERO.

Press the ENTER key to select the highlighted menu option and the following display appears:

100.0

OUTPUT ZERO OFFSET

PRESS UP OR DOWN

TO CHANGE VALUE

ENTER TO SAVE

MENU TO RETURN

The default setting of 100 illustrates no adjustment to the analog output signal. Compute the adjustment

value as described in Appendix B or consult the factory. The true adjustment value must be determined

empirically by trial and error. Adjust the initial value to above 100 to increase the analog signal value or

decrease it below 100 to decrease the analog signal.

090.0

OUTPUT ZERO OFFSET

PRESS UP OR DOWN

TO CHANGE VALUE

ENTER TO SAVE

MENU TO RETURN

Press the ENTER key to advance the underline cursor right or press the MENU key to advance the

underline cursor left to reach to the desired digit of the OUTPUT ZERO OFFSET value.

Press the ARROW keys to enter the OUTPUT ZERO OFFSET value.

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Analytical-industries GPR-1800 IS ATEX Trace PPM Oxygen Transmitter Manuel d'utilisateur Page 28

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