Siemens SITRANS P300 Operating Instructions Manual page 118

Specifications
9.1 SITRANS P300 gauge pressure / absolute pressure
Absolute pressure input
•
Lower measuring limit
•
Upper measuring limit
•
Output
Output signal
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•
•
•
•
•
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)
9-2
1 ... 30 bar a (14.5 ... 435 psi a)
Measuring cell with silicone oil
Measuring cell with silicone oil
Lower limit (infinitely adjustable)
Upper limit (infinitely adjustable)
Ripple (without HART communication)
Electrical damping T (step width 0.1 s)
63
Current sensor
Failure signal
HART Communicator
SIMATIC PDM
r ≤ 10
10 < r ≤ 30
30 < r ≤ 100
without electrical damping
63
45 bar a (653 psi a)
0 mbar a (0 psi a)
100% of maximum measuring span
4 ... 20 mA
Set to 3.84 mA (min. 3.55 mA)
Set to 20.5 mA (max. 23 mA)
I ≤ 0.5% of maximum output current
SS
Set to 0.1 s (0 ... 100 s)
3.55 mA ... 23 mA
3.55 mA ... 23 mA
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
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Room temperature 25 °C (77 °F)
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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) %
SITRANS P300 with HART communication
Operating Instructions, 06/2005, A5E00359579-02