• Nominal sizes

- 100 and 150.

• Models

- MP 319/320/321: ranges included between 0,6 and 25 bar;

- MP 419/420/421: ranges included between 16 and 400 mbar.

• Casing

- case and ring in AISI 304 stainless steel (AISI 316 on request - option V61) with bayonet bezel.

• Protection degree (according to EN 60529)

- IP 55 for dry execution;

- IP 67 (option V66 and V72).

• Window

- glass for dry execution;

- methacrylate for liquid filled execution;

- laminated safety glass (on request - option V17).

• Blow-out device

- blow out plug.

• Pressure connection (according to EN 837-3)

o G 1/2 B (1/2 Gas or BSP) or 1/2-14 NPT EXT (1/2 NPT) thread (MP 319/419);

o flanged connection as per EN and ASME standards (see tables MP 1 and 2 at page MP06):

- flange with through holes (MP 320/420);

- flange with threaded blind or through holes (MP 321/421).

• Pressure connection material

- AISI 316L stainless steel, standard;

- AISI 316L stainless steel with P.T.F.E. coating;

- special materials (see specific heading).

• Pressure element

- AISI 316Ti stainless steel diaphragm;

- diaphragm coated (see specific heading).

• Movement

- stainless steel.

• Ranges (according to EN 837-3)

o Graduation:

- pressure gauges: 0 ÷ 16; 0 ÷ 25; 0 ÷ 40; 0 ÷ 60; 0 ÷ 100; 0 ÷ 160; 0 ÷ 250; 0 ÷ 400 (unit of pressure mbar); 0 ÷ 0,6; 0 ÷ 1; 0 ÷ 1,6; 0 ÷ 2,5; 0 ÷ 4; 0 ÷ 6; 0 ÷ 10; 0 ÷ 16; 0 ÷ 25 (unit of pressure bar);

- vacuum gauges: -16 ÷ 0; -25 ÷ 0; -40 ÷ 0; -60 ÷ 0; -100 ÷ 0;

-160 ÷ 0; -250 ÷ 0; -400 ÷ 0 (unità di vuoto mbar);

-1 ÷ 0 (unit of vacuum bar);

- compound gauges: -1 ÷ 0,6; -1 ÷ 1,5; -1 ÷ 3; -1 ÷ 5;

-1 ÷ 9; -1 ÷ 15; -1 ÷ 24 (unità di pressione bar) 

- su request (unit of pressure mbar). (divisions as per table C1 at page P04)

- other graduations not normalized for single or double range (on request).

o Unit of pressure:

- mbar, bar, kPa, kg/cm2 and psi for single or double range.

o Scale angle:

- 270 °.

• Working pressure (referred to full scale deflection)

- steady from 1/10 to 3/4;

- fluctuating from 1/10 to 2/3.

• Over-pressure (referred to full scale deflection)

- 115% standard (occasionally allowed);

- special, on request only – option V28.

• Pointer

- aluminium with micrometric adjustment for dry exection;

- aluminium not adjustable for filled execution.

• Dial

- white aluminium with black figures (for dial modifications see available options).

• Accuracy (according to EN 837-3)

- class 1,6 (± 1,6% of full scale deflection).

note: accuracy indicated on the pressure gauge does not consider the interference of an eventually applied electric contact.

• Ambient temperature

- -20 ÷ +60 °C.

• Thermal drift out of the optimum ambient temperature values included within +15 ÷ +25 °C, the thermal drift affects the instruments accuracy as follows:

- 0,4% every 10 °C for models MP 319/320/321;

- 0,8% every 10 °C for models MP 419/420/421.

• Operating temperature

- -20 ÷ +100 °C standard execution;

- -20 ÷ +150 °C execution with special gaskets (except compound pressure gauges) (option V74);

- -20 ÷ +100 °C P.T.F.E. coated diaphragm.