• Nominal sizes
- 63, 100, 150, 200 e 250.
• Casing
- case and ring in AISI 304 stainless steel with bayonet bezel (execution B).
• 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
- tempered glass for NS 63, 100 and 150;
- methacrylate for NS 200 and 250;
- laminated safety glass (option V17).
• Blow-out device
- blow out plug.
• Filling liquid
- glycerine (standard);
- silicone fluid (on request - option V64).
• Pressure connection (according EN 837-1) Gas (BSP), BSPT or NPT thread as F dimension shown in SP tables, otherwise only 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).
• Welding
- TIG.
• Movement
- stainless steel.
• Ranges (according to EN 837-1)
o Maximum value:
- 1600 bar.
o Scale ranges for pressure values between –1 and 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.
• Pointer
- aluminium with micrometer adjustment;
- aluminium not adjustable for NS 63.
• 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) for NS 100, 150, 200 and 250;
- class 1,6 (± 1,6% of full scale deflection) for NS 63.
• 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.
• Operating temperature
- -40 ÷ +250 °C dry execution;
- -20 ÷ +100 °C glycerine filled execution;
- -40 ÷ +120 °C silicone fluid filled execution.
