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FANTINELLI Srl

Test gauges

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Pressure gauge with bottom connection for local mounting  
CP 331-A

• Nominal sizes

- 150 and 260.


• Casing

- case and ring in AISI 304 stainless steel with bayonet bezel for NS 150;

- case and ring in AISI 304 stainless steel with bayonet bezel for solid front execution (for CP 331-A NS 150 only) - option V65 (for technical features and dimensions see SF series);

- aluminium case and ring painted with black epoxy powder with screw clamping, for NS 260.


• Protection degree (according to EN 60529)

- IP 55.


• Window

- glass for NS 150;

- methacrylate for NS 260;

- laminated safety glass (standard for solid front execution and on request for CP 330 and CP 331 NS 150 - option V17).


• Blow-out device

- rubber plug;

- solid front execution (see SF series).


• Pressure connection (according to EN 837-1)

- with G 1/2 B (1/2 Gas or BSP) or 1/2-14 NPT EXT (1/2 NPT) thread in AISI 316 stainless steel.


• Pressure element

- copper berillium for scale values up to 600 bar;

- Ni-Span C (Fe Ni Cr alloy) for scale value 1000 bar.


• Welding

- silver alloy for copper berillium pressure element;

- TIG for Ni-Span C pressure element.


• Movement

- high precision.


• Ranges (according to EN 837-1)

o Graduation:

- pressure gauges: 0 ÷ 1; 0 ÷ 1,6; 0 ÷ 2,5; 0 ÷ 4; 0 ÷ 6; 0 ÷ 10; 0 ÷ 16; 0 ÷ 25; 0 ÷ 40; 0 ÷ 60; 0 ÷ 100; 0 ÷ 160; 0 ÷ 250; 0 ÷ 400; 0 ÷ 600; 0 ÷ 1000;

- vacuum gauges: -1 ÷ 0; (divisions as per table C1 at page P04)

o Unit of pressure:

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

o Scale angle:

- 300 °.


• Working pressure (referred to full scale deflection)

- from1/10 to 3/4.


• Over-pressure, vibrations and hard pressure pulsations

- not allowed.


• Accuracy (according to EN 837 -1)

- class 0,25 (± 0,25% of full scale deflection).

note 1: instrument is calibrated at an ambient temperature included between +15 and +25 °C; over these values instrument accuracy is influenced by a thermal drift of about 0,05% every 10 °C;

note2: the instrument must be installed with dial in vertical position.


• Pointer

- balanced and knife edged.


• Dial

- dlight green aluminium with black figures, with anti-parallax mirror, for single range;

note: tall instruments are identified by a serial number written on the dial.


• Calibration certificate

rising and falling pressure:

- Fantinelli (standard);

- ACCREDIA (on request).


• Carrying case

to protect and transport the instrument; only on request for DN 150.

Test gauges

  • accuracy class 0,25;
  • C-Bourdon tube pressure element;
  • NS 150 - 260;
  • ranges included between -1 and 1000 bar.

Our metrological laboratory beside others testing equipment has two RUSKA deadweight testers with 0,0035% accuracy class and 0,0001% sensitivity with values ranging from absolute vacuum up to 5000 bar.