21WIKA operating instructions pressure transmitter, model S-11
GB
14043046.01 06/2012 GB/D/F/E
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 (gure A)
To gain access to the potentiometers, open the instrument as follows:
■
Disconnect the electrical connection from the instrument.
■
Remove the clamping nut .
■
Carefully pull the instrument connector from the instrument.
■
Connect the instrument connector to the power supply and a
display unit (e.g. ammeter, voltmeter) according to the connection
diagram.
7.2 Adjustment of zero point (gure B)
■
Go to the start of the measuring range.
■
Using potentiometer "Z", adjust the minimum output signal
(e.g. 4 mA)
7.3 Setting the span (gure B)
■
Go to the end of the measuring range.
■
Using potentiometer "S", adjust the maximum output signal
(e.g. 20 mA)
■
Check the zero point and if there is any deviation, re-adjust it.
■
Repeat the procedure until the zero point and the span are set
correctly.
A
B
To Next Page
Loading...
Need help?
General
