50078194 | 332.54 4 -30INHG/100PSI 1/4 L | Wika (OBSOLETE)

Design
ASME B40.100

Size
4" (100mm)

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 (40 bar) and < 2,000 psi (160 bar)
+ 0.25% of span (ASME B40.100 Grade 3A) for
pressure range > 2,000 psi (160 bar)

Ranges (All ranges not stocked)
Vacuum compound up to 200 psi (16 bar)
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

Bourdon Tube
Material: 316 SS
≤ 1,000 PSI (70 bar): C-shape,
> 1,000 PSI (70 bar): Helical

Movement
Stainless steel

Dial
White aluminum with black lettering and mirrored band

Pointer
Black aluminum, micrometer adjustable, with knife edge

Case
304 SS with vent plug and polished stainless steel bayonet
ring. Welded case to socket connection

Staindard Scale
PSI

Window
Laminated safety glass

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)
Media: max. 212°F (+100°C)

Temperature error
Additioanal error when temperature changes from reference temperature of 68°F (20°C) ± 0.4% of span for every 18°F (10K°)

Connection
Material: 316 SS
Lower mount (LM)
¼" or ½" NPT

Window Gasket
Buna-N

Weather protection
Weather tight (NEMA 4X / IP 66)

Other
Supplied standard with a zippered, padded carry bag
Supplied standard with calibration test report