Design
ASME B40.100
Size
4½" (115mm)
Accuracy class
± 0.25% of span (ASME B40.100 Grade 3A) for pressure range ≤ 600 psi (40 bar)
± 0.5% of span (ASME B40.100 Grade 2A) for pressure range > 600 psi and < 2,000 psi (160 bar)
± 0.25% of span ( ASME B40.100 Grade 3A) for pressure range ≥ 2,000 psi (160 bar)
Bourdon Tube
Material: 316 SS
≤ 1,000 psi (70 bar): C-shape,
> 1,000 psi (70 bar): Helical
Movement
Stainless steel
Internal stop pin at 1.1 times full scale value
Dial
White aluminum with black lettering and mirrored band
Pointer
Black aluminum, micrometer adjustable, with knife edge
Ranges
Vacuum 30" Hg
Pressure from 15 psi (1 bar) to 20,000 psi (1,600 bar) (all ranges not available in 0.25% accuracy) or other equivalent units of pressure or vacuum
Case
Black fiberglass reinforced thermoplastic (Pocan®) Solid front, blow-out back Turret style case with built in rear mounting lugs)
Standard Scale
PSI
Window
Acrylic
Working Range
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 (-40°C to +60°C)
Medium: max. 212oF (+100oC)
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.
Connection
Materail: 316 SS
Lower mount (LM)
¼" NPT or ½" NPT limited to wrench flat area
with M4 internal tap
Weather Protection
Weather resistant (NEMA 3 / IP 54)
Window Gasket
Buna-N
Other
Supplied standard with calibration test report