Gauge pressure measuring limits with front-flush diaphragm
● Measuring cell with FDA-compliant oil
100 mbar a/10 kPa a/1.45 psi a
Upper measuring limit
100% of max. range
13.1.3
Gauge pressure from the differential pressure series
Gauge pressure input from the differential pressure series
Measured variable
Gauge pressure and differential 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
1 ... 20 mbar
0.1 ... 2 kPa
0.4015 … 8.031 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
1 ... 60 mbar
0.1 ... 6 kPa
0.4015 … 24.09 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
2.5 ... 250 mbar
0.2 ... 25 kPa
1.004 … 100.4 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
6 ... 600 mbar
0.6 ... 60 kPa
2.409 … 240.9 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
16 ... 1600 mbar
1.6 ... 160 kPa
6.424 … 642.4 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
50 ... 5000 mbar
5 ... 500 kPa
20.08 … 2008 inH
2
O
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
0.3 … 30 bar
0.03 ... 3 MPa
4.35 … 435 psi
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
5 … 100 bar
0.5 ... 10 MPa
76.9 … 1450 psi
160 bar
16 MPa
2320 psi
240 bar
24 MPa
3480 psi
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.
Gauge pressure measuring limits from differential pressure
series
Lower measuring limit
● Measuring cell with silicone oil filling
30 mbar a/3 kPa a/0.44 psi a
Technical data
13.1 Input
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
201