Siemens P technical specifications ≤ 0,1% ≤ 0,2% 10 r ≤, ≤ 0,2% ≤ 0,4% 30 r ≤ ≤ 0.005 ⋅ r + 0.05%

		© Siemens AG 2008
	SITRANS P measuring instruments for pressure
		Transmitters for food, pharmaceuticals and biotechnology
				SITRANS P300 for gage and absolute pressure
SITRANS P300 for gage pressure and absolute pressure
		HART				PROFIBUS PA and FOUNDATION Fieldbus
Input of absolute pressure, with front-flush diaphragm
Measured variable		Absolute pressure (front-flush)
								2
Spans (infinitely adjustable) or		Span	Max. perm. test pres-			Nominal measuring	Max. perm. test pres-
nominal measuring range and			sure			range	sure
max. pemissible test pressure		43 ... 1300 mbar a	10 bar a			1300 mbar a	10 bar a
		(0.62 ... 18.9 psi a)	(145 psi a)			(18.9 psi a)	(145 psi a)
		0.16 ... 5 bar a	30 bar a			5 bar a	30 bar a
		(2.32 ... 72.5 psi a)	(435 psi a)			(72,5 psi a)	(435 psi a)
		1 ... 30 bar a	100 bar a			30 bar a	100 bar a
		(14.5 ... 435 psi a)	(1450 psi a)			(435 psi a)	(1450 psi a)
		Depending on the process connection, the span				Depending on the process connection, the nomi-
		may differ from these values				nal measuring range may differ from these values
Lower measuring limit		0 bar a (0 psi a)
Upper measuring limit
• Measuring cell with silicone oil		100% der max. Messspanne				100% des max. Nennmessbereichs
Output
Output signal		4 ... 20 mA				Digital PROFIBUS PA signal
Physical bus		-				IEC 61158-2
With polarity reversal protection		No				Yes
Electrical damping T63 (step width 0.1 s)		Set to 0.1 s (0 ... 100 s)
Accuracy		To EN 60770-1
Reference conditions		Increasing characteristic, start-of-scale value 0 bar, stainless steel seal diaphragm, measuring cell
(All error data refer always refer to the set		with silicone oil, room temperature 25 °C (77 °F), span ratio (r = max. span / set span)
span)
Measurement deviation with cut-off point set-
ting, including hysteresis and repeatability.
		Gage pressure	Absolute		(Absolute	Gage pressure	Absolute	(Absolute
			pressure		pressure,		pressure	pressure,
					front-			front-
					flushed)			flushed)
Linear characteristic curve						≤ 0,075%	≤ 0,1%	≤ 0,2%
• r ≤ 10		≤ (0.0029 ⋅ r + 0.071)%	≤ 0,1%		≤ 0,2%
• 10 < r ≤ 30		≤ (0.0045 ⋅ r + 0.071)%	≤ 0,2%		≤ 0,4%
• 30 < r ≤ 100		≤ (0.005 ⋅ r + 0.05)%	-		-
Settling time T63 without electrical damping		Approx. 0.2 s
Long-term drift at ± 30 °C (± 54 °F)		≤ (0.25 ⋅ r)%/5 years	≤ (0.1 ⋅ r)%/year			≤ 0.25%/5 years	≤ 0.1%/year
Influence of ambient temperature
• at -10 ... +60 °C (14 ... 140 °F)		≤ (0.1 ⋅ r +0.2)%			≤ (0.2 ⋅ r	≤ 0,3%		≤ 0,5%
					+0.3)%
• at -40 ... -10 °C and +60 ... +85 °C		≤ (0.1 ⋅ r + 0.15)% / 10 K			≤ (0.2 ⋅ r +	≤ 0.25%/10 K		≤ 0.5%/
(-40 ... 14 °F and 140 ... 185 °F)					0.3)%/10 K			10 K
Influence of the medium temperature (only
with front-flush diaphragm)
• Temperature difference between medium		3 mbar/10 K (0.04 psi/10 K)
temperature and ambient temperature

Siemens FI 01 · 2009

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