Siemens SITRANS P DS III Operating Instructions Manual page 207

Absolute pressure measuring accuracy (from gauge and differential pressure series)
Linear characteristic curve
•
r ≤ 10
10 < r ≤ 30
Effect of ambient temperature
•
250 mbar/25 kPa/3.6 psi
•
1300 mbar a/130 kPa a/18.8
•
psi a
5 bar a/500 kPa a/72.5 psi a
30 bar a/3000 kPa a/435 psi a
100 bar a/10 MPa a/1450.3 psi a
160 bar a/16 MPa a/2321 psi a
400 bar a/40 MPa a/5802 psi a
700 bar a/70 MPa a/10152.6
psi a
Long-term stability at ±30 °C (±54 °F)
Step response time T without electrical
63
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
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
≤ 0.1%
≤ 0.2%
In percent per 28 °C (50 °F)
≤ (0.15 • r + 0.1)
≤ (0.08 • r + 0.16)
In 5 years ≤ (0.25 • r) %
Approx. 0.2 s
In pressure per change of angle
for absolute pressure (from the gauge pressure series): ≤
•
0.05 mbar/0.005 kPa/0.000725 psi per 10° incline
for absolute pressure (from the differential pressure series):
•
0.7 mbar/0.07 kPa/0.001015 psi per 10° incline
(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
13.5 Measuring accuracy of SITRANS P DS III
Technical data
207