Absolute Pressure From The Differential Pressure Series - Siemens SITRANS P Compact Operating Instructions

Technical data
8.1 Input
8.1.6

Absolute pressure from the differential pressure series

Absolute pressure input from the differential pressure series
Measurand
Measuring span (continuous‐
ly adjustable) and maximum
operating pressure (accord‐
ing to 2014/68/EU Pressure
Equipment Directive)
For devices with functional safety, the minimum permissible measuring span is limited by the
1)
turndown. Therefore, ensure that the configured turndown is no higher than 5:1.
Absolute pressure measuring limits from
differential pressure series
Lower measuring limit
• Measuring cell with silicone oil filling
• Measuring cell with inert liquid
For process temperature -20 °C < ϑ
≤ 60 °C (-4 °F < ϑ ≤ +140 °F)
For process temperature 60 °C < ϑ
≤ 100 °C (max. 85 °C for measuring
cell 30 bar) (140 °F < ϑ ≤ 212 °F
(max. 185 °F for measuring cell
435 psi))
Upper measuring limit
Lower range value
66
Absolute pressure
Measuring span
1)
8.3 ... 250 mbar a
0.83 ... 25 kPa a
3 ... 100 inH O a
2
43 ... 1300 mbar a
4.3 ... 130 kPa a
17 ... 525 inH O a
2
166 ... 5000 mbar a
16.6 ... 500 kPa a
2.41 ... 72.5 psi a
1 ... 30 bar a
0.1 ... 3 MPa a
14.5 ... 435 psi a
8 ... 160 bar a
0.8 ... 16 MPa a
116 ... 2320 psi a
0 mbar a/kPa a/psi a
30 mbar a/3 kPa a/0.44 psi a
30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C
3 kPa a + 2 kPa a • (ϑ - 60 °C)/°C
0.44 psi a + 0.29 psi a • (ϑ - 140 °F)/°F
100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/
1450 psi and 60 °C ambient temperature/medium temperature)
Between the measuring limits (continuously adjustable)
Maximum permissible
operating pressure MAWP (PS)
160 bar a
16 MPa a
2320 psi a
160 bar a
16 MPa a
2320 psi a
160 bar a
16 MPa a
2320 psi a
160 bar a
16 MPa a
2320 psi a
160 bar a
16 MPa a
2320 psi a
Compact Operating Instructions, 01/2021, A5E38874562-AC
Max. permissible
test pressure
240 bar a
24 MPa a
3480 psi a
240 bar a
24 MPa a
3480 psi a
240 bar a
24 MPa a
3480 psi a
240 bar a
24 MPa a
3480 psi a
160 bar a
16 MPa a
2320 psi a
SITRANS P320/P420