Siemens 7MF0400 - 8.1.6 Absolute pressure from the differential pressure series

8.1.6 Absolute pressure from the differential pressure series
Absolute pressure input from the differential pressure series
Measured variable Absolute pressure
Measuring span (continuous‐
ly adjustable) and maximum
operating pressure (accord‐
ing to 2014/68/EU Pressure
Equipment Directive)
Measuring span Maximum permissible
operating pressure
MAWP (PS)
Max. permissible
test pressure
8.3 … 250 mbar a
0.83 ... 25 kPa a
3 … 100 inH
2
O a
160 bar a
16 MPa a
2320 psi a
240 bar a
24 MPa a
3480 psi a
43 … 1300 mbar a
4.3 ... 130 kPa a
17 … 525 inH
2
O a
160 bar a
16 MPa a
2320 psi a
240 bar a
24 MPa a
3480 psi a
166 … 5000 mbar a
16.6 ... 500 kPa a
2.41 … 72.5 psi a
160 bar a
16 MPa a
2320 psi a
240 bar a
24 MPa a
3480 psi a
1 … 30 bar a
0.1 ... 3 MPa a
14.5 … 435 psi a
160 bar a
16 MPa a
2320 psi a
240 bar a
24 MPa a
3480 psi a
5 … 100 bar a
0.5 ... 10 MPa a
76.9 … 1450 psi a
160 bar a
16 MPa a
2320 psi a
240 bar a
24 MPa a
3480 psi a
Absolute pressure measuring limits from dif‐
ferential pressure series
Lower measuring limit
● Measuring cell with silicone oil filling
0 mbar a/kPa a/psi a
● Measuring cell with inert liquid
For process temperature -20 °C <
ϑ ≤ 60 °C (-4 °F < ϑ ≤ +140 °F)
30 mbar a/3 kPa a/0.44 psi a
For process temperature 60 °C < ϑ
≤ 100 °C (max. 85 °C for measur‐
ing cell 30 bar) (140 °F < ϑ ≤ 212 °F
(max. 185 °F for measuring cell
435 psi))
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
Upper measuring limit 100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/
1450 psi and 60 °C ambient temperature/medium temperature)
Start of scale value Between the measuring limits (continuously adjustable)
Technical data
8.1 Input
SITRANS P320/P420 with 4 to 20 mA/HART
66 Compact Operating Instructions, 09/2018, A5E38874562-AB