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Model 432.50, 433.50 Diaphragm Pressure Gauge

Brand: WIKA Alexander Wiegand SE & Co. KG
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Diaphragm pressure gauges measure gauge, absolute and differential pressure. In processing industries, they can be installed in applications with highly corrosive, viscous media.
Features
  • Threaded or open flange process connections
  • Wide selection of special materials
  • All stainless steel construction
  • High overpressure safety
  • Ranges from 6" H20 (16 mbar)
Diaphragm pressure gauges measure gauge, absolute and differential pressure. In processing industries, they can be installed in applications with highly corrosive, viscous media.
Features
  • Threaded or open flange process connections
  • Wide selection of special materials
  • All stainless steel construction
  • High overpressure safety
  • Ranges from 6" H20 (16 mbar)
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Specifications

Brand

Design

  • EN 837-3

Sizes

  • 4” & 6” (100 & 160 mm)

Accuracy Class

  • ± 2.5 % of Span

Ranges

  • Vacuum / Compound to 300 psi (20 bar
  • Pressure from 6” H2,O (16 mbar) to 100” H2,O (250 mbar)
  • 6” (160 mm) flange diameter
  • Pressure from 6 psi (400 mbar) to 360 psi (25 bar)
  • 4” (100 mm) flange diameter
  • Or other equivalent units of pressure or vacuum

Working Pressure

  • Steady: Full Scale Value
  • Fluctuating: 0.9 x Full Scale Value

Overpressure Safety

  • 5 x Full Scale Value, not exceeding 600 psi (40 bar)

Operating Temperature

  • -4° F...+158° F (-20° C to +70° C)
  • For Ranges ≤ 25” H₂O (60 mbar)
  • Ambient: -4° F to +140° F (-20° C to +60° C)
  • Medium: +212° F (+100° C) Max.
  • Storage: -40° F...+158° F (-40° C to +70° C)

Temperature Error

  • Additional error when temperature changes from reference temperature of 68° F (20° C) ± 0.8 % of Span for every 18° F (10° K) rising or falling.

Weather Protection

  • Weather Tight (IP65) - Liquid-filled Case
  • Weather resistant (NEMA 3 / IP54) - dry Case

Case & Upper Diaphragm Housing

  • Material: Stainless Steel
  • Case with Pressure relief disc and Stainless Steel bayonet Ring

Pressure Connection & Lower Diaphragm Housing

  • Material: 316L Stainless Steel
  • Lower Mount (LM)
  • 1/2” NPT Female

Diaphragm Element

  • ≤ 100” H₂O (250 mbar): 316 Stainless Steel with PTFE lining
  • All Ranges with FPM (Viton) Sealing Gasket
  • > 100” H₂O (250 mbar): Inconel (NiCr-Alloy) with PTFE lining

Movement

  • Material: Stainless Steel

Dial

  • White Aluminum with Black Lettering

Pointer

  • Black Aluminum, Adjustable - Type 432.50
  • Black Aluminum, Non-Adjustable - Type 433.50

Window

  • Laminated Safety Glass with Buna-N Gasket

Case Filling

  • Standard dry
  • Glycerine 86.5 % - Type 433.50
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Applications

  • With liquid filled case for applications with high dynamic pressure pulsations or vibration
  • Suitable in corrosive environments for gaseous, liquid or highly viscous media.
  • Process industry: chemical/petrochemical, power stations, mining, on and offshore, environmental technology, mechanical engineering and plant construction
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