Differential Pressure And Flow - Siemens 7MF03 Series Compact Operating Instructions

8.2.8

Differential pressure and flow

Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow
Measuring span ratio r (spread, Turn-Down)
Linear characteristic curve
Linear characteristic curve
Linear characteristic curve
Root extraction characteris‐
tic
Root extraction characteris‐
tic
Root extraction characteris‐
tic
Root extraction characteris‐
tic
Root extraction characteris‐
tic
Root extraction characteris‐
tic
SITRANS P320/P420 with 4 to 20 mA/HART
Compact Operating Instructions, 09/2018, A5E38874562-AB
20 mbar/2 kPa/0.29 psi
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
Flow > 50%
20 mbar/2 kPa/0.29 psi
Flow > 50%
60 mbar/6 kPa/0.87 psi
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
Flow 25 ... 50%
20 mbar/2 kPa/0.29 psi
Flow 25 ... 50%
60 mbar/6 kPa/0.87 psi
8.2 Measuring accuracy of SITRANS P320
r = max. measuring span/set measuring span and nomi‐
nal measuring range
r ≤ 5
≤ 0.075%
r ≤ 5
≤ 0.075%
r ≤ 5
≤ 0.065%
r ≤ 5
≤ 0.075%
r ≤ 5
≤ 0.075%
r ≤ 5
≤ 0.065%
r ≤ 5
≤ 0.15%
r ≤ 5
≤ 0.15%
r ≤ 5
Technical data
5 < r ≤ 20
≤ (0.005 • r + 0.05)%
5 < r ≤ 60
≤ (0.005 • r + 0.05)%
5 < r ≤ 100
≤ (0.004 • r + 0.045)%
5 < r ≤ 20
≤ (0.005 • r + 0.05)%
5 < r ≤ 60
≤ (0.005 • r + 0.05)%
5 < r ≤ 100
≤ (0.004 • r + 0.045)%
5 < r ≤ 20
≤ (0.01 • r + 0.1)%
5 < r ≤ 60
≤ (0.01 • r + 0.1)%
5 < r ≤ 100
75