Siemens SITRANS P - Absolute Pressure from the Differential Pressure Series

2)
The MAWP
value of the pressure transmitter can be lower than the PN value of the mounting
flange and vice versa. To determine the maximum permissible operating pressure and the
maximum permissible test pressure, use the lowest value as reference.
Absolute pressure measuring limits with front-flush diaphragm
Lower measuring limit
● Measuring cell with silicone oil filling
0 mbar a/kPa a/psi a
Upper measuring limit 100% of max. range
Lower range value Between the measuring limits (continuously adjustable)
13.1.6 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
1)
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
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 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
Technical data
13.1 Input
SITRANS P320/P420 with 4 to 20 mA/HART
204 Operating Instructions, 11/2019, A5E44852162-AC