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Model 432.56, 432.36 Diaphragm Pressure Gauge with Switch Contact

Brand: WIKA Instruments Ltd.
High overload safety up to 100/400 bar.
Features
  • High overload safety, optionally up to 40, 100 or 400 bar, due to the metallic pressure element limit stop, without liquid-filled measuring cell.
  • Wide choice of special materials.
  • Also available with liquid-filled case for high dynamic pressure loads or vibrations.
  • Instruments with inductive contacts for use in hazardous areas with ATEX approval.
  • Instruments with electronic contact for PLC applications.
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High overload safety up to 100/400 bar.
Features
  • High overload safety, optionally up to 40, 100 or 400 bar, due to the metallic pressure element limit stop, without liquid-filled measuring cell.
  • Wide choice of special materials.
  • Also available with liquid-filled case for high dynamic pressure loads or vibrations.
  • Instruments with inductive contacts for use in hazardous areas with ATEX approval.
  • Instruments with electronic contact for PLC applications.

Specifications

Design

  • EN 837-3

Sizes

  • 4” & 6” (100 & 160 mm)

Accuracy Class

  • ±1.5% of span

Ranges

  • or other equivalent units of pressure or vacuum
  • Pressure from 6 psi (400 mbar) to 600 psi (40 bar), 4” (100 mm) flange diameter
  • Pressure from 6” H2,O (16 mbar) to 100” H2,O (250 mbar), 6” (160 mm) flange diameter
  • Vacuum/Compound to 600 psi (40 bar)

Working Pressure

  • Fluctuating: 0.9 x full scale value
  • Steady: full scale value

Overpressure Safety

  • Choice of 600 psi (40 bar) or 1,500 psi (100 bar)

Operating Temperature

  • Medium: +212° F (+100° C) maximum
  • Ambient: -4° F to +140° F (-20° C to +60° 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 resistant (NEMA 3 / IP54) - dry case
  • Weather tight (NEMA 4X / IP66) - liquid-filled case

Pressure Connection & Lower Diaphragm Housing

  • 1/2” NPT female
  • Lower mount (LM)
  • Material: 316 stainless steel

Upper Diaphragm Housing

  • >100” H2 O (250 mbar) Stainless Steel
  • ≤100” H2 O (250 mbar): Chrome Steel

Diaphragm Element

  • All ranges with FPM/FKM (Viton) sealing gasket
  • > 100” H2 O (250 mbar): Inconel® (NiCr-alloy)
  • ≤ 100” H2 O (250 mbar): 316 Stainless Steel

Movement

  • Stainless steel

Dial

  • White aluminum with black lettering

Pointer

  • Black aluminum, non-adjustable - Type 433.56
  • Black aluminum, adjustable - Type 432.56

Case

  • 304 Stainless Steel with pressure relief disc and Stainless Steel bayonet ring

Window

  • Laminated safety glass with Buna-N gasket

Case Filling

  • Glycerine - Type 433.56

Typical Applications

  • With liquid filled case for applications with high dynamic pressure pulsations or vibration and overpressure
  • 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
  • Ideally for applications in the water/wastewater industry