• Teledyne Hastings Vacuum Gauge Tube, 0 to 5 Torr (230 VAC), EVH-3

Teledyne Hastings Vacuum Gauge Tube, 0 to 5 Torr (230 VAC), EVH-3

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2.00 LBS

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Teledyne Hastings Instruments (THI) Economy Vacuum Gauges, Models VH-3 and VH-4, are stable, dependable instruments for less demanding applications. These modular gauges feature solid-state construction with a taut-band meter and provide rapid response. The gauge tubes have excellent stability and ruggedness and provide pressure measurements over the 0-5 and 0-50 Torr ranges. Dual-scale meter faces also provide millibar readings. Environmental tests show that the gauge tube is stable over a wide temperature range. The instruments are relatively free of cable-length effects, permitting changes of cable length up to 25 feet without readjustment or recalibration.

THI VH-3 and VH-4 Vacuum Gauges use a noble metal thermopile circuit. The hot junctions of the thermopile are heated directly by an AC current, while an equal number of cold junctions are kept at ambient temperature by heavy mounting studs. Thus a DC voltage is generated between hot and cold junctions. As the pressure decreases, the lowering of the thermal conductivity of the gas surrounding the hot junctions tends to increase the temperature of the hot junctions, thus increasing the output of the thermopile.

  • Two Standard Ranges (0-5 Torr and 0-50 Torr)
  • Optional Single or Double Control Points
  • Ready for Panel Mounting
  • Optional Sensor Fittings
  • Fail Safe: Loss of Power = Loss of Vacuum
  • Complete Installation and Calibration Accessories
  • Glove Boxes
  • Thermal Food Containers
  • Vacuum Furnaces
  • Pharmaceutical Production
  • Freeze Drying
  • Agricultural Processes
  • Air Conditioning
  • Accelerators
  • Plasma Coating
  • Refrigeration (HVAC)
  • Cryogenics
  • Appliance Manufacturing

Product Specifications

General Specifications

Vacuum Range:0-5 Torr (230 VAC)