WIKA UT-11 - Manual (Page 42)

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Universal Pressure Transmitter UniTrans
Appendix
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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: [email protected] · www.wika.de
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9.3 Warranty Conditions
The pressure transmitter has a 24 month warranty in accordance with the WIKA
General Terms of Delivery.
9.4 Glossary
Adjustment Allocation of the signal output range (4 ... 20 mA) to the desired
pressure measurement range or level measurement range.
Integration Also damping: timely communication of the measurement sig-
nal; rise time of the current output signal after a signal surge
Inversion Conversion of the output signal from 4 ... 20 mA to 20 ... 4 mA
Nom. pressure range The operating pressure range for which the sensor was de-
signed
Zero point Start of the pressure measurement range
Parameterization Also configuration: programming of the relevant parameters
and the pressure measurement range specific to the application
and measurement location.
Span The programmed pressure measurement range
Span end point The highest pressure value of the programmed measurement
span (end-point of the span)
Tank linearization Determination of approximate volume/pressure ratio values
with non-linear correlations based on varying container designs
For example, a non-linear correlation exists between the fill lev-
el and the volume in spherical containers. During linearization,
the non-linear volume is assigned the 4 ... 20 mA output signal
from a table of values (proximity process by means of up to 32
support points).
Defaults The sensor parameters are pre-programmed by the manufac-
turer
9.5 Units of Pressure Measurement
1 atm (atmospheres) = 760 mm Hg = 760 Torr
= 1.033 kp/cm
2
= 0.1013 MPa
1 Torr = 133.3 Pa
1 kp/mm
2
= 9.81 N/mm
2
= 9.81 MPa
1 bar = 0.1 MPa
1 mbar = 1 hPa (Hektopascal)
1 psi (pound per square inch) = 6.895 · 10
3
Pa
1 bar = 33.5 feet of water
1 PA = 1.0 x 10
-5
bar
1 mmHG = 1.333 mbar
Repairs may only be carried out by the manufacturer. All other repairs and
device modifications are unauthorized and will void the warranty.
Attention