Siemens DS III series with PMC connection, Profibus PA or Foundation Fieldbus, Signal

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for gage pressure for the paper industry

DS III series with PMC connection

■Technical specifications

	SITRANS P, DS III series for gage pressure with PMC connection for the paper industry
		HART		PROFIBUS PA or FOUNDATION Fieldbus
2	Input
	Measured variable	Gage pressure
	Spans (infinitely adjustable) or	Span	Max. perm. test pres-	Nominal measuring	Max. perm. test pres-
	nominal measuring range and		sure	range	sure
	max. permissible test pressure	0.01 ... 1 bar g	6 bar g	1 bar g	6 bar g
		(0.145 ... 14.5 psi g)	(87 psi g)	(14.5 psi g)	(87 psi g)
		0.04 ... 4 bar g	10 bar g	4 bar g	10 bar g
		(0.58 ... 58 psi g)	(145 psi g)	(58 psi g)	(145 psi g)
		0.16 ... 16 bar g	32 bar g	16 bar g	32 bar g
		(2.32 ... 232 psi g)	(464 psi g)	(232 psi g)	(464 psi g)
	Lower measuring limit
	• Measuring cell with silicone oil filling	100 mbar a (1.45 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		≤ 0,075%
- r ≤ 10	≤ (0.0029 ⋅ r + 0.071)%
- 10 < r ≤ 30	≤ (0.0045 ⋅ r + 0.071)%
- 30 < r ≤ 100	≤ (0.005 ⋅ r + 0.05)%
Long-term drift (temperature change ± 30 °C	≤ (0.25 ⋅ r)% every 5 years	≤ 0.25% every 5 years
(± 54 °F))
Influence of ambient temperature
• at -10 ... +60 °C (14 ... 140 °F)	≤ (0.08 ⋅ r + 0.1)%	≤ 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)
Influence of medium temperature
• Temperature difference between medium	3 mbar/10 K (0.04 psi/10 K)
temperature and ambient temperature
Influence of mounting position	≤ 0.1 mbar g (0.00145 psi g) per 10° inclination
Measured Value Resolution	-	3 ⋅ 10-5of nominal measuring range

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Siemens FI 01 · 2009