Description
Design
- EN 837-3
Sizes
- 4″
- 6″
Accuracy class
- ± 1.5% of span
Ranges
- Vacuum / Compound to 600 psi (40 bar)
- Pressure from 6” H2O (16 mbar) to 100″ H2O (250 mbar), 6″ (160 mm) flange diameter
- Pressure from 6 psi (400 mbar) to 600 psi (40 bar), 4” (100 mm) flange diameter or other equivalent units of pressure or vacuum
Working pressure
- Steady: full scale value
- Fluctuating: 0.9 x full scale value
Overpressure safety
- Choice of 600 psi (400 bar) or 1,500 psi (100 bar)
Operating temperature
- Ambient: -4°F to +140°F (-20°C to +60°C)
- Medium: +212°F (+100°C) maximum
Temperature error
- Additional error when temperature changes from reference temperature of 68°F (20°C) ±0.8% of span for every 18°F (10°K) rising or falling.
Weather protection
- Weather resistant (NEMA 3 / IP54)-dry case
- Weather tight (NEMA 4X / IP66)-liquid-filled case
Pressure connection and lower diaphragm housing
- Material: 316 stainless steel
- Lower mount (LM)
- 1/2” NPT female
Upper diaphragm housing
- ≤100” H2O (250 mbar): chrome steel
- >100” H2O (250 mbar): 316 stainless steel
Diaphragm element
- ≤100” H2O: 316 stainless steel
- >100” H2O: Duratherm (NiCrCo-alloy)
- All ranges with FPM/FKM (Viton) sealing gasket
Movement
- Stainless steel
Dial
- White aluminum with black lettering
Pointer
- Black aluminum, adjustable – Type 432.56
- Black aluminum, non-adjustable – Type 433.56
Case
- 304 stainless steel with pressure relief disc and stainless steel bayonet ring
Window
- Laminated safety glass with Buna-N gasket
Case fill
- Glycerine 86.5% – Type 433.56
