Siemens P Quick-release diaphragm seals, For gage, absolute and differential pressure, 170

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Quick-release diaphragm seals

For gage, absolute and differential pressure

■Overview

2

Quick-release diaphragm seals, to DIN 11851 with slotted union nut

Quick-release diaphragm seals, with clamp connection

Quick-release diaphragm seals are available for the following SITRANS P pressure transmitter series:

•For pressure: MK II, DS III, DS III PA, DS III FF

•For differential pressure and flow: DS III, DS III PA, DS III FF

The quick-release remote seals are common designs in the food industry. Their design means that the measured medium cannot accumulate in dead volumes. The quick-release clamp present on the remote seal means that quick dismounting is possible for cleaning.

■Technical specifications

Quick-release diaphragm seal

Connection, nominal diameter	Nominal pressure
For pressure
• To DIN 11851 with slotted union nut
- DN 25	PN 40
- DN 32	PN 40
- DN 40	PN 40
- DN 50	PN 25
- DN 65	PN 25
- DN 80	PN 25
• To DIN 11851 with threaded socket
- DN 25	PN 40
- DN 32	PN 40
- DN 40	PN 40
- DN 50	PN 25

- DN 65	PN 25
- DN 80	PN 25
• Clamp connection
- 1½ inch	PN 40
- 2 inch	PN 40
- 2½ inch	PN 25
- 3 inch	PN 25
For differential pressure and flow
• To DIN 11851 with slotted union nut
- DN 50	PN 25
- DN 65	PN 25
- DN 80	PN 25
• To DIN 11851 with threaded socket
- DN 50	PN 25
- DN 65	PN 25
- DN 80	PN 25
• Clamp connection
- 2 inch	PN 40
- 2½ inch	PN 25
- 3 inch	PN 25
Sealing face
• For stainless steel, mat. No.	To EN 1092-1, form B1 or
1.4404/316L	ASME B 16.5RF 125 ... 250 AA
• For the other materials	To EN 1092-1, form B2 or
	ASME B16.5 RFSF
Materials
• Main body	Stainless steel 316L
• Wetted parts	Stainless steel 316L
• Capillary	Stainless steel, mat.
	No. 1.4571/316Ti
• Sheath	Spiral hose made of stainless
	steel, mat. No. 1.4301/316
Maximum pressure	See above and the technical data
	of the pressure transmitter
Tube length	Without tube
Capillary
• Length	Max. 10 m (32.8 ft), longer
	lengths on request
• Internal diameter	2 mm (0.079 inch)
• Minimum bending radius	150 mm (5.9 inch)
Filling liquid	Food oil (FDA listed)
	Glycerin/water (not suitable for
	use in low-pressure range)
Permissible ambient temperature	Dependent on the pressure trans-
	mitter and the filling liquid of the
	remote seal
	More information can be found in
	the technical data of the pressure
	transmitters and in the section
	"Technical data of filling liquid" in
	the Technical description to the
	remote seals
Weight	Approx. 4 kg (8.82 lb)
Certificates 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 requirements of article 3,
	paragraph 3 (sound engineering
	practice)

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Siemens FI 01 · 2009