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Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from differential pressure series
● Linear characteristic
curve
Effect of ambient temperature - gauge pressure from differential pressure series
In percent per 28 °C (50 °F)
20 mbar/2 kPa/8.031 inH
60 mbar/6 kPa/24.09 inH
250 mbar/25 kPa/3.6 psi
5000 mbar/500 kPa/2008 inH
600 mbar/60 kPa/240.9 inH
1600 mbar/160 kPa/642.4 inH
30 bar/3 MPa/435 psi
100 bar/10 MPa/1450.3 psi
Long-term stability at ±30 °C (±54 °F) - gauge pressure from differential pressure series
20 mbar/2 kPa/8.031 inH
60 mbar/6 kPa/24.09 inH
250 mbar/25 kPa/3.6 psi
600 mbar/60 kPa/240.9 inH
1600 mbar/160 kPa/642.4 inH
5000 mbar/500 kPa/2008 inH
30 bar/3 MPa/435 psi
100 bar/10 MPa/1450.3 psi
Step response time T
(without electrical damping) - gauge pressure from differential pressure series
63
20 mbar/2 kPa/8.031 inH
60 mbar/6 kPa/24.09 inH2O
250 mbar/25 kPa/3.6 psi
600 mbar/60 kPa/240.9 inH
1600 mbar/160 kPa/642.4 inH
5000 mbar/500 kPa/2008 inH
30 bar/3 MPa/435 psi
100 bar/10 MPa/1450.3 psi
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions, 06/2018, A5E38874562-AA
250 mbar/25 kPa/3.6 psi
600 mbar/60 kPa/240.9 inH
1600 mbar/160 kPa/642.4 inH
5000 mbar/500 kPa/2008 inH
30 bar/3 MPa/435 psi
100 bar/10 MPa/1450.3 psi
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
7.3 Measuring accuracy of SITRANS P420
≤ 0.04%
O
2
O
2
O
2
r ≤ 10
≤ 0.1%
≤ (0.15 • r + 0.1)%
≤ (0.075 • r + 0.1)%
≤ (0.025 • r + 0.0625)%
≤ (0.0125 • r + 0.0625)%
≤ (0.08 • r + 0.16)%
Per year ≤ (0.2 • r)%
In 5 years ≤ (0.25 • r)%
In 5 years ≤ (0.125 • r)%
In 10 years ≤ (0.15 • r)%
In 5 years ≤ (0.25 • r)%
In 10 years ≤ (0.35 • r)%
In 5 years ≤ (0.25 • r)%
Approx. 0.160 s
Approx. 0.150 s
Approx. 0.135 s
Approx. 0.145 s
Technical data
≤ (0.004 • r + 0.045)%
10 < r ≤ 30
≤ 0.2%
75
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