
C
Universal Pressure Transmitter UniTrans
Operation of Transmitters without Display
Published 16.2.04
Subject to change due to technical modifications. © Copyright WIKA Alexander Wiegand GmbH & Co. KG / BRD
WIKA Alexander Wiegand GmbH & Co. KG · Alexander-Wiegand-Str. · 63911 Klingenberg · (09372) 132 - 710 · Fax - 706 · E-mail: support-tronic@wika.de · www.wika.de
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Example:
A pressure transmitter with 0 ... 400 mbar (nominal pressure) is to be pro
rammed.
The liquid’s surface (with a densit
of 1) is 1 m above the diaphra
m at the zero point.
The maximum (span end-point) should be 3 m. The measurin
ran
e (span) is 200
mbar.
This means that the output must be set to 12 mA durin
pro
rammin
.
5.4.3 Mounting correction of the sensor
The position of the measurin
cell ist adjusted b
simultaneousl
pressin
(2 sec.) the
"zero" and "esc" buttons.
A change in the zero point has no effect on the adjusted span.
However, if the span end-point is higher than the peak value of the
transmitter’s nominal pressure range, then the span end-point is fixed
at this peak value and the span is reduced accordingly.
A change in the span setting has no effect on the zero point. The zero
point and span end-point must fall within the transmitter’s nominal
pressure range.
A test / correction of the zero point is suggested after adjusting the
span in order to maintain optimum accuracy.
A mounting correction should be carried out before or after making an
adjustment without pressure (dry adjustment) (see 5.4.3). The trans-
mitter must therefore be placed in the reference position for the mea-
surement (installation site) without pressure on the diaphragm.
I
pressure difference (span) (300 mbar -100 mbar)
Sensors nominal pressure 400 mbar
--------------------------------------------------------------------------------------------------------------------------------
Activate
Keypad
(2 sec.)
Calculate
Calibration Value
Calibration of span, without display, without pressure
027-DS-GB
current value decreases
I
calc
=
(2 sec.)
(2 sec.)
Important
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