Adjustment Of Zero Point And Span - WIKA S-11 Mode D'emploi

7. Adjustment of zero point and span

7. Adjustment of zero point and span
Only adjust the span-setting potentiometer if calibration equipment is available which has at
least three times the accuracy of the pressure transmitter.
7.1 Preparation (figure A)
To gain access to the potentiometers, open the instrument as follows:
Disconnect the electrical connection
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Remove the clamping nut
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Carefully pull the instrument connector
■
Connect the instrument connector
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display unit (e.g. ammeter, voltmeter) according to the connection
diagram.
7.2 Adjustment of zero point (figure B)
Go to the start of the measuring range.
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Using potentiometer "Z", adjust the minimum output signal
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(e.g. 4 mA)
7.3 Setting the span (figure B)
Go to the end of the measuring range.
■
Using potentiometer "S", adjust the maximum output signal
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(e.g. 20 mA)
Check the zero point and if there is any deviation, re-adjust it.
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Repeat the procedure until the zero point and the span are set
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correctly.
WIKA operating instructions pressure transmitter, model S-11
from the instrument.

.

from the instrument.

to the power supply and a

A



B
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