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Pressure gauges Premium class
HOME | PRODUCTS | PRESSURE GAUGES | PRESSURE GAUGES PREMIUM CLASS | SP 311
Pressure gauge with back connection for flush mounting with 3 fixing holes SP 311
• Nominal size
- 100, 150, 200 and 260.
• Casing- execution B:case and ring in AISI 304 stainless steel (AISI 316 on request for NS 100 and 150 - option V61) with bayonet bezel;- execution A:aluminium case and ring NS 260 painted with black epoxy powder with screw clamping.
• Protection degree (according to EN 60529)- IP 55 for execution D (dry);- IP 67 for execution F (liquid filled) and for execution P (fillable).
• Window- glass for dry execution NS 100 and 150;- methacrylate for liquid filled, fillable and for NS 200 and 260;- laminated safety glass (on request - option V17).
• Blow-out device- blow out plug for NS 100, 150 and 200 and for execution D (dry) NS 260;- calibrated valve for execution F (liquid filled) and for execution P (fillable) for NS 260.note: see SF SERIES for solid front execution.
• Filling liquid - glycerine (standard);- silicone fluid, standard if the instrument is provided with electrical contact or, on request, as alternative to glycerine - option V64;- special fluids (on request).note: see also headings “Service conditions” and “Ambient temperature”.
• Pressure connection (according to EN 837-1)G 1/2 B (1/2 Gas or BSP) or 1/2-14 NPT EXT (1/2 NPT) thread (others on request):- AISI 316L stainless steel (execution 2);- Monel 400 (option W04).
• Pressure element- AISI 316L stainless steel (execution 2);- Monel 400 (option M04 and W04).note: pressure element pierced inside connection body for a depth 7 mm, according to petrol-chemical industry specification.
• Welding- TIG.
• Movement- stainless steel.
• Ranges (according to EN 837-1)o Maximum values referred to NS:- 1600 bar for NS 100 and 150;- 1000 bar for NS 200 and 260.o Divisions related to pressure values between -1 e 1600 bar:- pressure gauges: see table C1 at page P04;- vacuum gauges and compound gauges: see table C1 at page P04;- other graduations not normalized for single or double range (on request).o Unit of pressure:- bar, kPa, MPa, 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;- pulsating from 1/10 to 1/2.
• Over-pressure (occasionally allowed)- 130% of full scale value (standard);- 160% of full scale value (option V25);- 250% of full scale value (option V27);- for others over-pressure values use over-pressure protectors (see AM series).
• Pointer- aluminium with micrometer adjustment for dry execution and for execution with electric contacts;- aluminium not adjustable for liquid filled or fillable execution.
• Dialwhite aluminium with black figures (for dial modifications see available options).
• Accuracy (according to EN 837-1)- class 1 (± 1% of full scale deflection) standard.note 1: accuracy indicated on the pressure gauge does not consider the interference of an eventually applied electric contact.note 2: diaphragm seal can affect instrument accuracy according with the service conditions because of the pressure/temperature ratio.
• Ambient temperature- -40 ÷ +60 °C dry execution;- -20 ÷ +60 °C glycerine filled execution;- -40 ÷ +60 °C silicone fluid filled execution.
• Thermal drift- out of optimum ambient temperature values included within +15 ÷ +25°C, the thermal drift affects the instruments accuracy of 0,3% every 10°C.
• Service conditions- see table SP 5 at page SP10.
Bourdon tube pressure gauges
- stainless steel tube or Monel;
- watertight casing, dry or liquid filled execution;
- NS 100 - 150 - 200 - 260;
- ranges included between -1 and 1600 bar.
Instruments of SP 300 series are designed for special executions; with dial NS 100 and 150 are the base for the electric contact pressure gauges.
• Nominal size
- 100, 150, 200 and 260.
• Casing
- execution B:
case and ring in AISI 304 stainless steel (AISI 316 on request for NS 100 and 150 - option V61) with bayonet bezel;
- execution A:
aluminium case and ring NS 260 painted with black epoxy powder with screw clamping.
• Protection degree (according to EN 60529)
- IP 55 for execution D (dry);
- IP 67 for execution F (liquid filled) and for execution P (fillable).
• Window
- glass for dry execution NS 100 and 150;
- methacrylate for liquid filled, fillable and for NS 200 and 260;
- laminated safety glass (on request - option V17).
• Blow-out device
- blow out plug for NS 100, 150 and 200 and for execution D (dry) NS 260;
- calibrated valve for execution F (liquid filled) and for execution P (fillable) for NS 260.
note: see SF SERIES for solid front execution.
• Filling liquid
- glycerine (standard);
- silicone fluid, standard if the instrument is provided with electrical contact or, on request, as alternative to glycerine - option V64;
- special fluids (on request).
note: see also headings “Service conditions” and “Ambient temperature”.
• Pressure connection (according to EN 837-1)
G 1/2 B (1/2 Gas or BSP) or 1/2-14 NPT EXT (1/2 NPT) thread (others on request):
- AISI 316L stainless steel (execution 2);
- Monel 400 (option W04).
• Pressure element
- AISI 316L stainless steel (execution 2);
- Monel 400 (option M04 and W04).
note: pressure element pierced inside connection body for a depth 7 mm, according to petrol-chemical industry specification.
• Welding
- TIG.
• Movement
- stainless steel.
• Ranges (according to EN 837-1)
o Maximum values referred to NS:
- 1600 bar for NS 100 and 150;
- 1000 bar for NS 200 and 260.
o Divisions related to pressure values between -1 e 1600 bar:
- pressure gauges: see table C1 at page P04;
- vacuum gauges and compound gauges: see table C1 at page P04;
- other graduations not normalized for single or double range (on request).
o Unit of pressure:
- bar, kPa, MPa, 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;
- pulsating from 1/10 to 1/2.
• Over-pressure (occasionally allowed)
- 130% of full scale value (standard);
- 160% of full scale value (option V25);
- 250% of full scale value (option V27);
- for others over-pressure values use over-pressure protectors (see AM series).
• Pointer
- aluminium with micrometer adjustment for dry execution and for execution with electric contacts;
- aluminium not adjustable for liquid filled or fillable execution.
• Dial
white aluminium with black figures (for dial modifications see available options).
• Accuracy (according to EN 837-1)
- class 1 (± 1% of full scale deflection) standard.
note 1: accuracy indicated on the pressure gauge does not consider the interference of an eventually applied electric contact.
note 2: diaphragm seal can affect instrument accuracy according with the service conditions because of the pressure/temperature ratio.
• Ambient temperature
- -40 ÷ +60 °C dry execution;
- -20 ÷ +60 °C glycerine filled execution;
- -40 ÷ +60 °C silicone fluid filled execution.
• Thermal drift
- out of optimum ambient temperature values included within +15 ÷ +25°C, the thermal drift affects the instruments accuracy of 0,3% every 10°C.
• Service conditions
- see table SP 5 at page SP10.
Bourdon tube pressure gauges
- stainless steel tube or Monel;
- watertight casing, dry or liquid filled execution;
- NS 100 - 150 - 200 - 260;
- ranges included between -1 and 1600 bar.
Instruments of SP 300 series are designed for special executions; with dial NS 100 and 150 are the base for the electric contact pressure gauges.
