Dwyer Series 4000 Capsuhelic® Differential Pressure Gauge

Part Number: Series 4000 Category:

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Dwyer Series 4000 Capsuhelic® Differential Pressure Gage is designed to give a fast, accurate indication of differential pressures. The gauge may be used as a readout device when measuring flowing fluids, pressure drop across filters, liquid levels in storage tanks, and many other applications involving pressure, vacuum, or differential pressure. The pressure being measured is held within a capsule which is an integral part of the gage. This containment of the pressure permits the use of the gauge on system pressures of up to 500 psi, even when differentials to be read are less than 0.1 in w.c.

Note: It May be used with Hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.

Product Applications

  • Fluid flow
  • Liquid storage tanks
  • Filter pressure drops
  • Vacuum or differential pressure

Service : Aluminum Case: Air and compatible gases and oil based liquids. Brass Case: Air and compatible gases and water based liquids.

Wetted Materials : Consult factory.

Housing : Die cast aluminum with impregnated hard coating, standard. Optional forged brass housing is required for water or water based fluids.Special material diaphragms available, contact factory.

Accuracy : ±3% of FS at 70°F (21.1°C). (±2% on 4000S skus, ±4% on 4200, 4210, 4215, 4220, 4300, 4400, and 4500).

Pressure Limits : -20″ Hg to 500 psig. (-0.677 bar to 34.4 bar).

Temperature Limits : 20 to 200°F (-6.67 to 93.3°C).

Size : 4″ (101.6 mm) diameter dial face.

Mounting Orientation : Diaphragm in vertical position. Consult factory for other position orientations.

Process Connections : 1/4″ female NPT high and low pressure taps, duplicated – one pair top for air and gas, and one pair bottom for liquids.

Weight : 3 lb, 3 oz (1.45 kg) aluminum case; 7 lb, 13 oz (3.54 kg) brass case.

Standard Accessories : Two 1/4″ NPT plugs for duplicate pressure taps, four flush mounting adapters with screws and four surface mounting screws.

  • Gage capsule permits high-pressure usage with small differentials
  • Zero and range adjustments outside of gage means no disassembly in normal service
  • Time-proven, simple, frictionless movement that permits full scale readings as low as 0.5 in w.c.
  • Diaphragm-actuated versus liquid filled gage supports outdoor use
  • ASF Adjustable Signal Flag
  • B Brass Case
  • Scale Overlays Red, Green, Mirrored or Combination, Specify Locations


Datasheet: Dwyer Series 4000 Catalog Page

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