NOSHOK 756 Series Digital Pressure Transmitters User Manual
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9.2
Warranty Conditions
The pressure transmitter has a 3 year warranty.
9.3
Glossary
Adjustment
Allocation of the signal output range (4 ... 20 mA) to the desired
pressure measurement range or level measurement range.
Integration
Also dampening: timely communication of the measurement
signal; 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
9.4
Units of Pressure Measurement
1 atm (atmospheres)
= 760 mm Hg = 760 Torr
= 1.033 kp/cm
2
= 0.1013 MPa
a
P
3
.
3
3
1
=
r
r
o
T
1
1 kp/mm
2
= 9.81 N/mm
2
= 9.81 MPa
a
P
M
1
.
0
=
r
a
b
1
)
l
a
c
s
a
p
o
t
k
e
H
(
a
P
h
1
=
r
a
b
m
1
1 psi (pound per square inch) = 6.895 · 10
3
Pa
r
e
t
a
w
f
o
t
e
e
f
5
.
3
3
=
r
a
b
1
Repairs may only be performed by the manufacturer. All other repairs and
device alterations are unauthorized and will void the warranty.
Attention