WIKA IUT-11 - Manual (Page 61)

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Universal IS Pressure Transmitter UniTrans
Transmitter Operation with HART®-functionality
Subject to change due to technical modifications. © Copyright WIKA Alexander Wiegand GmbH & Co. KG / Germany
WIKA Alexander Wiegand GmbH & Co. KG · Alexander-Wiegand-Str. · 63911 Klingenberg · (09372) 132 - 710 · Fax - 706 · E-mail: [email protected] · www.wika.de
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10.2.4 Submenu 'Parameter' - Calibration
Calibration with pressure:
The calibration with pressure is only possible when the cyclic measurement is activated.
Set zero :
Before starting the calibration make sure that the pressure applied to the transmitter
has the value you want to set as zero point (P 0 %).
Set span :
Make sure that the pressure applied to the transmitter has the value you want to set
as upper end of span (P 100 %). The measuring range between zero point and upper
end of span will be saved as span.
In general the preset span is not affected when the zero point is changed. When,
however, the zero point is increased in a way that the upper end of span would reach
beyond the maximum nominal pressure of the transmitter, this maximum nominal
pressure value is defined as new upper end of span and the span is reduced
respectively. A modification of the span settings does not affect the zero point.
During a calibration under pressure two pressure values are set respectively for zero
and upper end point of span. These values, which must lie within the nominal
pressure range of the transmitter are respectively assigned to an output current
signal. When the applied pressure lies beyond the nominal pressure range of the
transmitter an error message is displayed. In this case the value is not saved.
Cyclic measurement (measured value):
The actual measured value for the calibration under pressure is displayed
(automatic actualisation).