C1 HIGH PRECISION PRESSURE TRANSDUCER
The pressure transducers cover all pressure ranges from 100
mbar to 1000 bar. They are all delivered with engraved serial
number and electrical lead outs. Several millions of these
pressure transducers are in use worldwide in a variety of
different applications. The main fields of application are
level technology, pneumatics, hydraulics, and avionics. A
high-sensitivity piezo-resistive silicon chip is used for
pressure sensing. The chip is protected against ambient
influences by a stainless steel housing sealed with a
concentrically corrugated diaphragm. The housing is filled
with silicone oil so as to ensure the transfer of the pressure
from the diaphragm to the sensing component. All metallic
parts in contact with the pressure media are made of
stainless steel AISI316L. The fully welded housing is vacuum-tight. Each pressure transducer is subject
to comprehensive tests as to its pressure response and temperature characteristic, and is delivered with
an individual calibration certificate stating the characteristics as well as the results of all tests that were
performed.
C1.1 TECHNICAL SPECIFICATIONS
Standard Pressure Ranges (FS) and Overpressure in Bar
Available ranges: 0,8…1,2 3 10 30 100 300 1000
Overpressure: 2 5 20 60 200 400 1000
Output : RS 485
Supply (V): 8…28 Vcc
Accuracy, Error Band (-10…80 °C): 0,1 % FS
Precision (10…40 °C): 0,01 %FS ranges ³ 10 bar
Output Rate: 400 Hz
Resolution: 0,002 %FS
Long-term Stability typ.: Gauges:1 mbar or 0,05 %FS
Absolute: 0,5 mbar or 0,025 %FS (10…40 °C)
Load Resistance (ohm): <(U-7V) / 0,02A (2-wire) > 5’000 (3-wire)
Electrical Connection: - MIL C-26482-Plug (6 pole)
- Binder-Plug 723 (5 pole)
- DIN 43650 Plug (4 pole)
Insulation : 100 Mohm / 50 V
Storage/Operating T. range: -40…120 °C
Pressure Endurance: 10 Million Pressure Cycles 0…100 %FS at 25 °C
Vibration Endurance: 20 g (5...2000 Hz, max. amplitude ± 3 mm),
according to IEC 68 2-6
Shock Endurance: 20 g (11 ms)
Protection: IP65 optional: IP 67 or IP68 (with cable)
CE-Conformity: EN 50081-2, EN 50082-2
Material in Contact with Media: HASTELLOY
Weight: 30 g;
Dead Volume Change: < 0,1 mm3
Connector: Molex Milli-Grid 2 mm.
C1.2 ACCURACY AND PRECISION
“Accuracy” is an absolute term, “Precision” a relative term. Deadweight testers are primary standards
for pressure, where the pressure is defined by the primary values of mass, length and time. Higher-class
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