Siemens SITRANS P300 Operating Instructions Manual page 122

Specifications
9.2 SITRANS P300 gauge pressure / absolute pressure (flush-mounted)
Output
Load
Without HART communication
With HART communication
•
•
Characteristic curve
Measuring accuracy
Reference conditions
Measurement deviation with cut-off point setting,
including hysteresis and repeatability.
Linear characteristic curve
•
•
•
Settling time T
Long-term drift at ±30 °C (±54 °F)
Influence of ambient temperature
•
•
Influence of process temperature
•
Influence of installation position
Influence of auxiliary power
9-6
HART Communicator
SIMATIC PDM
r ≤ 10
10 < r ≤ 30
30 < r ≤ 100
without electrical damping
63
at -10 ... +60 °C (14 ... 140 °F)
at -40 ... -10 °C and +60 ... +85 °C
(-40 ... 14 °F and 140 ... 185 °F)
Temperature difference between the process
temperature and the ambient temperature
Resistor R [Ω]
U Auxiliary power
H
R =230 ... 500 Ω
R =230 ... 1100 Ω
Linearly rising or linearly falling
Rising characteristic curve
•
Zero point 0 bar
•
Seal diaphragm: stainless steel
•
Measuring cell with silicone oil
•
Room temperature 25 °C (77 °F)
•
Measuring span ratio r
•
r = maximum measuring span or set
measuring span
≤ (0.0029 • r + 0.071) %
≤ (0.0045 • r + 0.071) %
≤ (0.005 • r +0.05) %
Approx. 0.2 s
In 5 years
≤ (0.25 • r) %
As percentage
≤ (0.1 • r +0.2) %
≤ (0.1 • r + 0.15) % per 10 K
(≤ (0.1 • r + 0.15) % per 10 K)
In pressure per change of temperature
3 mbar per 10 K (0.04 psi per 10 K)
In pressure per change of angle
0.4 mbar (0.006 psi) per 10°
Correction via zero point calibration
In percent per change of voltage
0.005% per 1 V
SITRANS P300 with HART communication
Operating Instructions, 06/2005, A5E00359579-02