Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow
Linear characteristic curve r ≤ 5 5 < r ≤ 60
60 mbar/6 kPa/0.87 psi ≤ 0.075% ≤ (0.005 • r + 0.05)%
Linear characteristic curve r ≤ 5 5 < r ≤ 100
250 mbar/25 kPa/3.63 psi (PN160)
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
≤ 0.04% ≤ (0.004 • r + 0.045)%
250 mbar/25 kPa/3.63 psi (PN420)
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
≤ 0.065%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 20
Flow > 50%
● 20 mbar/2 kPa/0.29 psi
≤ 0.075% ≤ (0.005 • r + 0.05)%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 60
Flow > 50%
● 60 mbar/6 kPa/0.87 psi
≤ 0.075% ≤ (0.005 • r + 0.05)%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 100
Flow > 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
≤ 0.04% ≤ (0.004 • r + 0.045)%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 20
Flow 25 ... 50%
● 20 mbar/2 kPa/0.29 psi
≤ 0.15% ≤ (0.01 • r + 0.1)%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 60
Flow 25 ... 50%
● 60 mbar/6 kPa/0.87 psi
≤ 0.15% ≤ (0.01 • r + 0.1)%
Root extraction characteris‐
tic
r ≤ 5 5 < r ≤ 100
Technical data
13.3 Measuring accuracy of SITRANS P420
SITRANS P320/P420 with 4 to 20 mA/HART
224 Operating Instructions, 11/2019, A5E44852162-AC
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