Siemens P technical specifications Technical specifications

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for gage, absolute and differential pressure, flow and level

DS III series for absolute pressure (from differential pressure series)

■Technical specifications

SITRANS P, DS III series for absolute pressure (from differential pressure series)

		HART		PROFIBUS PA or FOUNDATION Fieldbus
2	Input
	Measured variable	Absolute pressure pressure
	Spans (infinitely adjustable) or	Span	Maximum working pres-	Nominal measuring	Maximum working pres-
	nominal measuring range and		sure	range	sure
	max. permissible working pressure
		8.3 ... 250 mbar a	32 bar a	250 mbar a	32 bar a
		(0.12 ... 3.6 psi a)	(464 psi a)	(3.6 psi a)	(464 psi a)
		43 ... 1300 mbar a	32 bar a	1300 bar a	32 bar a
		(0.62 ... 18.9 psi a)	(464 psi a)	(18.9 psi a)	(464 psi a)
		160 ... 5000 mbar a	32 bar a	5 bar a	32 bar a
		(2.32 ... 72.5 psi a)	(464 psi a)	(72.5 psi a)	(464 psi a)
		1 ... 30 bar a	160 bar a	30 bar a	160 bar a
		(14.5 ... 435 psi a)	(2320 psi a)	(435 psi a)	(2320 psi a)
		5.3 ... 100 bar a	160 bar a	100 bar a	160 bar a
		(77 ... 1450 psi a)	(2320 psi a)	(1450 psi a)	(2320 psi a)
			(for connection thread		(for connection thread
			M10 and 7/16-20 UNF in		M10 and 7/16-20 UNF in
			the process flanges)		the process flanges)
	Lower measuring limit
	• Measuring cell with silicone oil filling	0 mbar a (0 psi a)
	Upper measuring limit	100% of max. span
	Output
	Output signal	4 ... 20 mA		Digital PROFIBUS PA or FOUNDATION Fieldbus
				signal
	• Lower limit (infinitely adjustable)	3.55 mA, factory preset to 3.84 mA		-
	• Upper limit (infinitely adjustable)	23 mA, factory preset to 20.5 mA or optionally set		-
		to 22.0 mA
	Load
	• Without HART communication	RB ≤ (UH - 10.5 V)/0.023 A in Ω,
				-
		UH : Power supply in V
	• With HART communication	RB = 230 ... 500 Ω (SIMATIC PDM) or		-
		RB = 230 ... 1100 Ω (HART Communicator)
	Physical bus	-		IEC 61158-2
	With polarity reversal protection	-		Yes
	Accuracy	To EN 60770-1
	Reference conditions	Increasing characteristic, start-of-scale value 0 bar, stainless steel seal diaphragm, silicone oil filling,
	(All error data refer always refer to the set	room temperature 25 °C (77 °F)) r: Span ratio (r = max. span / set span)
	span)
	Error in measurement and fixed-point setting
	(including hysteresis and repeatability)
	• Linear characteristic			≤ 0.1%
	- r ≤ 10	≤ 0.1%
	- 10 < r ≤ 30	≤ 0.2%
	Long-term drift (temperature change ± 30 °C	≤ (0.1 ⋅ r)%/year		≤ 0.1%/year
	(± 54 °F))
	Influence of ambient temperature
	• at -10 ... +60 °C (14 ... 140 °F)	≤ (0.1 ⋅ r +0.2)%		≤ 0.3%
	• at -40 ... -10 °C and +60 ... +85 °C	≤ (0.1 ⋅ r + 0.15)%/10 K		≤ 0.25%/10 K
	(-40 ... +14 °F and 140 ... 185 °F)
	Measured Value Resolution	-		3 ⋅ 10-5of nominal measuring range

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Siemens FI 01 · 2009