Siemens SITRANS P, Руководство по эксплуатации, Страница: 203 / 280

1)
For devices with functional safety, the minimum permissible measuring span is limited by the
spread. Therefore, ensure that the configured spread is no higher than 5:1.
Absolute pressure measuring limits from
gauge pressure series
Lower measuring limit
● Measuring cell with silicone oil filling
0 mbar a/kPa a/psi a
● Measuring cell with inert oil
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 measuring 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)
Lower range value Between the measuring limits (continuously adjustable)
13.1.5 Absolute pressure with front-flush diaphragm
Absolute pressure with front-flush diaphragm
Measured variable
Absolute pressure
Measuring span (continuous‐
ly adjustable) or measuring
range, max. operating pres‐
sure and max. test pressure
Measuring span
1)
Maximum permissible
operating pressure MAWP
(PS)
Maximum test
pressure
43 … 1300 mbar a
4.3 ... 130 kPa a
17 … 525 inH
2
O a
Refer to the information on the nameplate of the pressure
transmitter and the data on the mounting flange
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
Depending on the process connection, the measuring span may differ from these values
1)
For devices with functional safety, the minimum permissible measuring span is limited by the
spread. Therefore, ensure that the configured spread is no higher than 5:1.
Technical data
13.1 Input
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
203