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7
Technical data
General information
Application
Operation and system design Measuring principle
Input
Manufacturer
Instrument
Designation
Measurement of absolute and gauge pressure in gases, vapours, liquids
Barcon PPC-M20, LHC-M20 with ceramic sensor
Barcon PPC-M10, LHC-M40 with metal sensor
Measuring system
Construction
Signal transmission
Measured variables
Measuring ranges
PPC-M20, LHC-M20
Type of
Measure-
Min. span
pressure
ment limits
(TD 10:1)
bar
bar
gauge
0 ... 0.1
0.01
gauge
0 ... 0.4
0.04
gauge
0 ... 1
0.1
gauge
0 ... 4
0.4
gauge
0 ... 10
1
gauge
0 ... 40
4
gauge
-0.1 ... 0.1
0.02
gauge
-0.4 ... 0.4
0.08
gauge
-1 ... +1
0.2
gauge
-1 ... +10
0.5
absolute
0 ... 0.4
0.04
absolute
0 ... 1
0.1
absolute
0 ... 4
0.4
absolute
0 ... 10
1
absolute
0 ... 40
4
Barcon LHC/PPC (HART)
Pepperl+Fuchs
Pressure transmitter
PPC-M10, PPC-M20, LHC-M20, LHC-M40
The pressure causes a slight deflection of the ceramic
diaphragm of the sensor. The change in the
capacitance is proportional to the pressure and is
measured by the electrodes of the ceramic sensor.
Volume of chamber: approx. 2 mm³ (0.078 in³)
The process pressure acting on the metallic
separating diaphragm of the sensor is transmitted via
a filling fluid to a resistance bridge. The change in the
output voltage of the bridge is proportional to the
pressure and is then measured.
Volume of chamber: smaller than 1 mm³ (0.039 in³)
Barcon and power supply e. g. via transmitter power
pack and operation via
• two keys on the instrument and a plug-in display
module
• handheld terminal
• PC with the PACTware operating program via HART
modem
Standard SS housing, for process connections see
Seite 9
4 mA ... 20 mA signal with superposed HART
communications signal, 2-wire
Absolute or gauge pressure
PPC-M10, LHC-M40
Overload
Type of
Measure-
pressure
ment limits
bar
4
gauge
0 ... 1
7
gauge
0 ... 4
10
gauge
0 ... 10
25
gauge
0 ... 40
40
gauge
0 ... 100
60
gauge
0 ... 400
4
gauge
-1 ... +1
7
gauge
-1 ... +4
10
gauge
-1 ... +10
40
7
absolute
0 ... 1
10
absolute
0 ... 4
25
absolute
0 ... 10
40
absolute
0 ... 40
60
absolute
0 ... 100
absolute
0 ... 400
Technical data
Min. span
Overload
(TD 10:1)
bar
bar
0.1
4
0.4
16
1
40
4
160
10
400
40
600
0.2
4
0.5
16
1.0
40
0.1
4
0.4
16
1
40
4
160
10
400
40
600
37
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