Description
Design
ASME B40.100
Sizes
2½” (63, 100 mm) dial size
Accuracy class
2½”: ±2/1/2% of span per ASME B40.100 Grade 2A)
4″: ± 1.0% of span per ASME B40.100 Grade 1A
Ranges
Vacuum/compound to 200 psi (16 bar)
Pressure from 0/15 psi (1 bar) to 20,000 psi (1,600 bar) or other equivalent units of pressure or vacuum
Working pressure
2½”: Steady: 3/4 scale value
Fluctuating: 2/3 Full-scale value
Short time: Full-scale value
4”: Steady: Full-scale value
Fluctuating: 0.9 x full-scale value
Short time: 1.3 x full-scale value
Operating temperature
Ambient: -40°F to +140°F (-20°C to +60°C) – dry
Media: max. +212°F (+100°C)
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
IP 68
Protected against continuous submersion in up to 10,000 feet (3048m) of ocean depth
Pressure connection
Material: 316L stainless steel
Center back mount (CBM) for size 2-½”
Lower back mount (LBM) for size 4″
1/8″NPT (size 2-½” 1/4″NPT (size 2-½” & 4″)
and ½” NPT (size 4″)
(consult factory for other connections)
Bourdon tube
316L stainless steel
≤ 1,000 psi (70 bar): C-shape,
> 1,000 psi (70 bar): Helical
Movement
Stainless steel
Dial
Black aluminum (matte finish) with white lettering; 2-1/2″ with stop pin
Pointer
White aluminum, adjustable
Case
316 Stainless Steel with vinyl compensating membrane
Case Fill
Glycerin/water mixture 86.5 /13.5%
FD compliant Degassed to remove any impurities (N2, Oxygen, entrained gases) in order to minimize/eliminate compressibility of the fill fluid. 99% case fill, (air bubble no larger than 1/2″ behind window when gauge is laid flat).
