Loading...

FANTINELLI Srl

Diaphragm differential pressure switches

Diaphragm differential pressure switch  
PS 399/499

• Models

- PS 399: ranges included between 1 and 10 bar;

- PS 499: ranges included between 250 and 600 mbar.


• Casing

- case and cover in AISI 304 stainless steel with bayonet lock.


• Protection degree (according to EN 60529)

- IP 65.


• Pressure connection AISI 316L stainless steel:

- 1/4-18 NPT (1/4 NPT female) - standard;

- G 1/2 B (1/2 Gas o BSP male) or 1/2-14 NPT EXT (1/2 NPT male) - on request.


• Pressure element

- AISI 316 stainlees steel diaphragm with 2 AISI 321 stainless steel bellows.


• Pressure element gasket

- di P.T.F.E..


• Setting ranges

- see table PS 3.


• Static pressure

- see table PS 3.


• Electrical specifications

- 1 or 2 microswitches with change-over contacts (SPDT) - see table PS 4.


• Differential

- Fixed, of adjustable 10÷.50% of setting range for ranges ? 1 bar - see tables PS 3 and PS 4.


• Repeatability

- ? 1% of Full scale deflection.


• Set-point adjustment

- internal, micrometric adjustable.


• Electrical wiring

- terminal box.


• Electrical connection

- R 1/2 (1/2 Gas or BSPT female) thread (others on request).


• Ambient temperature

- -25 ÷ +65 °C.


• Operating temperature

- max 100 °C.


• Thermal drift

- ? 0,05% ogni °C di variazione.

Diaphragm differential pressure switchs

  • watertight casing;
  • ranges included between 250 mbar and 10 bar.

This instrument has a diaphragm with double bellows, that acts directly on the microswitch, through a selfcentering pivot. The simple structure of the instrument grants a reliable mechanic switch and a long working life.