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 (1,000 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 copper alloy
> 870 psi (60 bar): Helical copper alloy
Movement
Copper alloy
Dial
White ABS with stop pin and with black lettering
Pointer
Black aluminum
