DeltaOHM HD31, Operating Manual

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HD31
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V1.6
PP473 S0 SICRAM probe for the measurement of relative pressure with respect to the at-
mosphere or differential pressure in the range ± 250 Pa.
The probe uses a silicon piezoresistive sensor with high accuracy and temperature
compensation, which has excellent linearity, repeatability and stability over the
time.
A special
auto-zero circuit periodically equalizes the differential pressure at the
sensor input and corrects the offset; this feature makes the probe insensitive to
the mounting position and compensates the sensor aging and the deviation of the
zero with temperature changes, virtually eliminating maintenance operations.
A typical application of the probe is clean rooms monitoring.
Measuring range ± 250 Pa (± 2.5 mbar)
Maxuimum overpressure 50 kPa
Resolution 0.1 Pa
Accuracy @ 25 °C ± (0.2 Pa + 1.5% of the measure)
Accuracy @ 0…50 °C ± (0.2 Pa + 3% of the measure)
Operating temperature -10…+60 °C
Response time 0.125 s
Long-term stability ± 0.5% f.s. nominal (1000 h @ 25 °C)
Fluid in contact with Non-corrosive dry gas or air
the membrane
Connection
Ø 5 mm Tube
PP473 S1...PP473 S8 SICRAM probes for the measurement of the differential pressure
Measuring range S1 =f.s. 10 mbar S2 =f.s. 20 mbar S3 =f.s. 50 mbar
S4 =f.s. 100 mbar S5 =f.s. 200 mbar S6 =f.s. 500 mbar
S7 =f.s. 1 bar S8 =f.s. 2 bar
Max overpressure S1,S2,S3 =200 mbar S4 =300 mbar S5,S6 =1 bar
S7 =3 bar S8 =6 bar
Accuracy @ 25 °C S1,S2,S3 =0.5% f.s. S4 =0.25% f.s. S5,S6,S7,S8 =0.15% f.s.
Operating temperature -10...+60 °C
Fluid in contact with Air or non-corrosive dry gases
the membrane
Connection
Pipe Ø 5 mm