Design
ASME B40.100 & EN 837-1
Sizes
2½” (63 mm)
Accuracy class
± 2/1/2% of span (ASME B40.100 Grade A)
Ranges
Vacuum / Compound to 200 psi (16 bar)
Pressure from 15 psi (1 bar) to 15,000 psi (1000 bar) or other equivalent units of pressure or vacuum
Working pressure

Steady: 3/4 scale value

Fluctuating: 2/3 full scale value

Short time: full scale value

Operating temperature
Ambient: -40°F to +140°F (-40°C to +60°C) – dry
-4°F to +140°F (-20°C to +60°C) – glycerine filled
-40°F to +140°F (-40°C to +60°C) – silicone filled
Medium: +140°F (+60°C) maximum
Temperature error
Additional error when temperature changes from reference temperature of 68°F (20°C) ±0.4% of span for every 18°F (10°K) rising or falling.
Weather protection
Weather tight (NEMA 4X / IP 66)
Pressure connection
Material: copper alloy
Lower mount (LM)
7/16” – 20 SAE with o-ring, washer and lock nut
Bourdon tube
Material: copper alloy
< 870 psi (60 bar): C-shape
> 870 psi (60 bar): Helical type
Movement
Copper alloy
Dial
White ABS with stop pin and with black lettering
Pointer
Black aluminum

Case
304 stainless steel with vent plug and stainless steel crimp ring. Suitable for liquid filling. Case connection sealed with EPDM o-ring (glycerine filled) or Viton o-ring (dry or silicone filled).
Window
Polycarbonate with Buna-N gasket
Case fill
Glycerine 99.7% – Type 213.53S
Optional extras
Brass restrictor
External zero adjustment (2½” only)
Red drag pointer or mark pointer
Silicone or Halocarbon Oil case filling
Custom dial layout
 Other pressure scales available bar, kPa, MPa, kg/cm² and dual scales