Diaphragm seals (flange design) for pressure and absolute pressure, directly fitted on a transmitter

Nominal diameter

Nominal pressure

• DN 50

PN 40, PN 100

• DN 80

PN 40, PN 100

• DN 100

PN 16, PN 40

• 2 inch

Class 150, class 300, class 600, class 1500

• 3 inch

Class 150, class 300, class 600

• 4 inch

Class 150, class 300, class 400

Sealing face

• For stainless steel, mat. No. 1.4404/316L

To EN 1092-1, form B1 or ASME B16.5 RF 125 ... 250 AA

• For the other materials

Smooth to EN 1092-1, form B2 or ASME B16.5 RFSF

Materials

• Main body

Stainless steel, Mat. No. 1.4404/316L

• Wetted parts materials

Stainless steel, Mat. No. 1.4404/316L

• No coating

• PTFE coating (for low-pressure on request)

• ECTFE coating (for low-pressure on request)

• PFA coating (for low-pressure on request)

Monel 400, mat. No. 2.4360

Hastelloy C276, mat. No. 2.4819

Hastelloy C4, mat. No. 2.4610

Tantalum

• Capillary

Stainless steel 1.4571/316Ti

• Sealing material on the process connection

Copper

Maximum pressure

See above and the technical data of the transmitter

Tube length

• Without tube
• 50 mm (1.97 inch)
• 100 mm (3.94 inch)
• 150 mm (5.91 inch)
• 200 mm (7.87 inch)

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

• Silicone oil M5
• Silicone oil M50
• High-temperature oil
• Halocarbon oil (for measuring O₂)
• Food oil (FDA-listed)
• Glycerin/water (not suitable for use in low-pressure range)

Max. recommended process temperature

170 °C (338 °F)

Permissible ambient temperature

Dependent on the pressure transmitter and the filling liquid of the remote seal.

More information can be found in the technical specifications of the pressure transmitters and in the section "Technical data of filling liquid“ in the introduction to the remote seals.

Weight

Approx. 4 kg (8.82 lb)

Certificates and approvals

Classification according to pressure equipment directive (PED 97/23/EC)

For gases of fluid group 1 and liquids of fluid group 1; complies with requirements of article 3, paragraph 3 (sound engineering practice)