Siemens P technical specifications 173, Miniature diaphragm seals, Vacuum-proof design V01

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Miniature diaphragm seal

■Overview

Miniature diaphragm seals

The miniature diaphragm seals are available for the following SITRANS P pressure transmitter series for pressure:

• P300, DS III, DS III PA, DS III FF

Suitable for high pressures, contaminated, fibrous and viscous media in the chemical, paper, food and drink industries.

■Design

•Flush-mounted diaphragm

•No dead spaces

•Fixed threaded stems

For gage and absolute pressure

■Technical specifications

Miniature diaphragm seals
Span with
• G1B	> 6 bar (> 87 psi)
• G1½B	> 2 bar (> 29 psi)	2
• G2B	> 600 mbar (> 8.7 psi)
Filling liquid	Silicone oil M5 or food oil (FDA listed)
Material
• Main body	Stainl. steel mat No. 1.4404/ 316L
• Diaphragm	Stainl. steel mat No. 1.4404 / 316L
Maximum pressure	100% of nominal pressure of pressure
	transmitter, up to maximum of PN 400
	(5802 psi) (depending on the seal
	used)
Temperature of use	Same as pressure transmitter
Temperature range of medium	Same as pressure transmitter
Max. recommended process	150 °C (302 °F)
temperature
Weight
• G1B	Approx. 0.3 kg (approx. 0.66 lb)
• G1½B	Approx. 0.5 kg (approx. 1.10 lb)
• G2B	Approx. 0.8 kg (approx. 1.76 lb)
Certificate and approvals
Classification according to	For gases of fluid group 1 and liquids
pressure equipment directive	of fluid group 1; complies with
(DRGL 97/23/EC)	requirements of article 3, para-
	graph 3 (sound engineering practice)

■Dimensional drawings	Selection and Ordering data		Order No. Ord. code
	Miniature diaphragm seals	D)	7 M F 4 9 6 0 -
	directly fitted to SITRANS P pressure transmitters		1 77 0 7	777
	for pressure; type, 7MF403 7 and 7MF4237
	together with Order code "V01" (vacuum-proof
	design) and 7MF80271); must be ordered sepa-
	rately
	Material: Stainless steel, mat. No. 1.4401
	Pressure rating, see "Pressure transmitters"
	Process connection
(5.75)	• G1B		C
	• G1½B		D
146	• G2B		E
	• 1“ - NPT		K
	• 1½“ - NPT		L
	• 2“ - NPT		M
	Other version, add Order code and plain text:		Z	J 1 Y
	Process connection: ...
	Wetted parts materials
	• Stainless steel 316L		A
	Other version, add Order code and plain text:		Z	K 1 Y
	Wetted parts materials: ...
SW	Filling liquid
	• Silicone oil M5		1
H	• Food oil (FDA listed)		7
	Other version, add Order code and plain text:		9	M 1 Y
L	Filling liquid: ...
	1) With 7MF8027 and the measuring cells Q, S, T and U also order the
d M	vacuum-tight version.
	D) Subject to export regulations AL: N, ECCN: EAR99H.
G
d	Selection and Ordering data		Order code

G	Ø dM		SW		Ø d		L		H
	mm	(inch)	mm	(inch)	mm	(inch)	mm	(inch)	mm	(inch)
G1B	25	(0.98)	41	(1.61)	39	(1.53)	28	(1.1)	56	(2.21)
G1½B	40	(1.57)	55	(2.17)	60	(2.36)	30	(1.18)	50	(1.97)
G2B	50	(1.97)	60	(2.36)	70	(2.76)	30	(1.18)	63	(2.48)

dM: Effective diaphragm diameter

Miniature diaphragm seal, dimensions in mm (inch)

Further designs

Please add "-Z" to Order No. and specify Order code.

Quality inspection certificate (Factory calibration) to	C11
IEC 60770-2
Acceptance test certificate	C12

to EN 10204, section 3.1
Vacuum-proof design	V01
for use in low-pressure range

Siemens FI 01 · 2009

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