Siemens P technical specifications Transmitters for food, pharmaceuticals and biotechnology

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for food, pharmaceuticals and biotechnology

SITRANS P Compact

for gage and absolute pressure

	■Function
			The process pressure acts on a piezo-resistive semiconductor
			measuring bridge through a remote seal and a transmission liq-
			uid. The pressure transmitter converts the pressure values into a
2			load-independent current.
			A compensation network makes the output signal largely inde-
			pendent of the ambient temperature. As a result of a specially
			adapted remote seal connection with minimized volume, the in-
			fluence of the process temperature on the output signal is
			greatly reduced compared to a conventional screw connection.
			The pressure transmitters can be powered with a non-regulated
			DC voltage of 10 to 30 V. Output signals common to measuring
			technology are available.
	■Technical specifications
			Pressure transmitters for food, pharmaceuticals and biotechnology
			Mode of operation
			Measuring principle	Piezo-resistive
			Input
			Measured variable	Gage or absolute pressure
			Measured range	0 ... 160 mbar (0 ... 2.32 psi)
				...
				0 ... 40 bar (0 ... 580 psi)
			Output
			Output signal
			• Two-wire system	4 ... 20 mA
			• Three-wire system	0 ... 20 mA
			Measuring accuracy	To EN 60770-1
			Linearity error including hysteresis	≤ 0.2% of full-scale value
			(reference point adjustment)
			Adjustment accuracy	≤ ± 0.2% of full-scale value
			Adjustment time	< 20 ms
			Influence of ambient temperature
			On th enclosure
			• Zero	< 0.2%/10 K of full-scale value
			• Measured span	< 0.2%/10 K of full-scale value
			On the process connection (remote	Zero error (depends on design)
			seal)
			• Flange remote seal
			- DN 25 / 1"	4.8 mbar/10 K (0.070 psi/10 K)
			- DN 32 / 1¼”	2.3 mbar/10 K (0.033 psi/10 K)
			- DN 40 / 1½”	1.6 mbar/10 K (0.023 psi/10 K)
			- DN 50 / 2"	0.6 mbar/10 K (0.009 psi/10 K)
			• Clamp-on seal
			- DN 25 / 1"	9.5 mbar/10 K (0.138 psi/10 K)
			- DN 32 / 1¼”	4.1 mbar/10 K (0.060 psi/10 K)
			- DN 40 / 1½”	3.9 mbar/10 K (0.057 psi/10 K)
			- DN 50 / 2"	3.9 mbar/10 K (0.057 psi/10 K)

The zero error specified for the process connection should be consid- ered as a guideline for a standard design. We will produce a detailed system calculation on request. Systems with reduced remote seal errors are available on request.

Rated conditions
Installation conditions
• Mounting position	Any, vertical as standard
Ambient conditions
• Ambient temperature	-10 ... +70 °C (14 ... 158 °F)
• Storage temperature	-10 ... +90 °C (14 ... 194 °F)
• Process temperature	Max. 200 °C (392 °F), depends
	on design
• Degree of protection (to EN 60529)	IP65, optional IP67
• Electromagnetic compatibility
- Emitted interference	To EN 50081 Part 1, issue 1993
	(residential and industrial areas).
	The unit has no own emissions.
- Interference immunity to	EN 50082 Part 2, issue March
	1995 (industrial areas)
Design
Weight (without remote seal)
• Field housing	≈ 460 g (≈ 1.01 lb)
• Housing with plug	≈ 200 g (≈ 0.44 lb)
Housing
• Designs	• Field housing IP65 or IP67, with
	screwed gland
	• Angled plug DIN 43650, IP65
	• Cable connection, IP67
	• Round plug connector M12,
	IP65
• Material	Stainless steel, mat.
	No. 1.4404/1.4305
Material of union nut	Polyamide (with electrical con-
	nection using plug or cable)
	Electronics unit potted with sili-
	cone
	Internal ventilation for measuring
	ranges < 16 bar (< 232 psi),
	through housing thread or con-
	nection cable depending on
	design
Process connection
• Versions	See Ordering data
• Material of coupling	Stainless steel, mat.
	No. 1.4404/316L
Power supply
Terminal voltage on transmitter	10 ... 30 V DC
Rated voltage	24 V DC
Certificate and approvals
Classification according to pressure	For gases of fluid group 1 and liq-
equipment directive	uids of fluid group 1; complies
(DRGL 97/23/EC)	with the requirements of article 3,
	paragraph 1 (appendix 1);
	assigned to category III, confor-
	mity evaluation module H by the
	TÜV Nord
Explosion protection
• Intrinsic safety "i"	TÜV 03 ATEX 2099 X
- Identification	Ex II 2G EEx ib IIC T6

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Siemens FI 01 · 2009