Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow
Flow 25 ... 50%
● 250 mbar/25 kPa/3.63 psi
600 mbar/60 kPa/8.70 psi
1600 mbar/160 kPa/23.21 psi
5 bar/500 kPa/72.52 psi
30 bar/3 MPa/435.11 psi
≤ 0.08% ≤ (0.008 • r + 0.09)%
Effect of ambient temperature - differential pressure and flow
In percent per 28 °C (50 °F)
20 mbar/2 kPa/0.29 psi ≤ (0.15 • r + 0.1)%
60 mbar/6 kPa/0.87 psi ≤ (0.075 • r + 0.1)%
250 mbar/25 kPa/3.63 psi ≤ (0.025 • r + 0.0625)%
600 mbar/60 kPa/8.70 psi
1600 mbar/160 kPa/23.21 psi
≤ (0.0125 • r+0.0625)%
5 bar/500 kPa/72.52 psi ≤ (0.025 • r + 0.0625)%
30 bar/3 MPa/435.11 psi ≤ (0.0125 • r+0.0625)%
Effect of static pressure - differential pressure and flow
● On the lower range value
20 mbar/2 kPa/0.29 psi ≤ (0.15 • r)% per 70 bar (zero-point correction is possible with
position error compensation)
60 mbar/6 kPa/0.87 psi
250 mbar/25 kPa/3.63 psi
600 mbar/60 kPa/8.70 psi
1600 mbar/160 kPa/23.21 psi
30 bar/3 MPa/435.11 psi
≤ (0.1 • r)% per 70 bar (zero-point correction is possible with
position error compensation)
5 bar/500 kPa/72.52 psi
≤ (0.15 • r)% per 70 bar (zero-point correction is possible with
position error compensation)
● On the measuring span
20 mbar/2 kPa/0.29 psi ≤ 0.2% per 70 bar
60 mbar/6 kPa/0.87 psi
250 mbar/25 kPa/3.63 psi
600 mbar/60 kPa/8.70 psi
1600 mbar/160 kPa/23.21 psi
5 bar/500 kPa/72.52 psi
30 bar/3 MPa/435.11 psi
≤ 0.1% per 70 bar
Long-term stability at ±30 °C (±54 °F) - differential pressure and flow
Static pressure max. 70 bar/7 MPa/1015 psi
20 mbar/2 kPa/0.29 psi Per year ≤ (0.2 • r)%
60 mbar/6 kPa/0.87 psi In 5 years ≤ (0.25 • r)%
Technical data
8.3 Measuring accuracy of SITRANS P420
SITRANS P320/P420 with 4 to 20 mA/HART
86 Compact Operating Instructions, 09/2018, A5E38874562-AB
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