Siemens SITRANS P DS III Operating Instructions Manual page 212

Technical data
13.6 Measuring accuracy of SITRANS P410
Measuring accuracy (as per EN 60770-1) gauge pressure
Long-term stability at ±30 °C (±54 °F)
1 bar/100 kPa/14.5 psi
•
4 bar/400 kPa/58 psi
16 bar/1.6 MPa/232 psi
•
63 bar/6.3 MPa/914 psi
160 bar/16 MPa/2321 psi
Step response time T (without elec-
63
trical damping)
Effect of mounting position
Effect of auxiliary power supply
Measured value resolution for
PROFIBUS PA or FOUNDATION
Fieldbus
Differential pressure and flow rate measuring accuracy
Reference conditions
Measuring span ratio r (spread,
Turn-Down)
Conformity error at limit point set-
ting, including hysteresis and re-
peatability
Linear characteristic curve
•
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
Root extraction characteristic
•
Flow > 50 %
250 mbar/25 kPa/3.63 psi
•
600 mbar/60 kPa/8.70 psi
1600 mbar/160 kPa/23.21 ps
i
5 bar/500 kPa/72.52 psi
30 bar/3 MPa/435.11 psi
Flow 25 ... 50%
212
In 5 years ≤ (0.25 • r) %
In 5 years ≤ (0.125 • r) %
Approx. 0.15 s
≤ 0.05 mbar/0.005 kPa/0.02 inH
(zero point correction is possible with position error compensation)
In percent per change in voltage
0.005 % per 1 V
3 • 10 of the nominal measuring range
-5
Rising characteristic curve
•
Start of scale value 0 bar/kPa/psi
•
Seal diaphragm stainless steel
•
Measuring cell with silicone oil filling
•
Room temperature 25 °C (77 °F)
•
r = max. measuring span/set measuring span and nominal measuring range
r ≤ 5
≤ 0.04%
r ≤ 5
≤ 0.04%
r ≤ 5
O per 10° incline
2
5 < r ≤ 100
≤ (0.004 • r + 0.045) %
5 < r ≤ 30
≤ (0.004 • r + 0.045) %
5 < r ≤ 30
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08