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Dwyer Series 642 Pressure Transmitter
±0.1% Accuracy, SS Wetted Parts, Economical

The Series 642 Pressure Transmitter delivers ±0.1% accuracy for pressure measurement of liquids and compatible gases, economically. Units are constructed of 316 and 316 L SS wetted parts for superior compatibility. Zero and span are independently adjustable. Transmitters feature simple two-wire operation plus reverse polarity protection. Liquid fill provides shock and vibration-resistant operation.

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-- PHYSICAL DATA
  • Service: Compatible gas, liquids.
  • Output: 4 to 20 mA, two-wire.
  • Supply Voltage: 10 to 35 VDC.
  • Loop Resistance: 1250 ohms DC max.
  • Current Consumption: 38 mA DC max.
  • Accuracy: 0.1% F.S.
  • Maximum Pressure: 2x pressure range.
  • Zero and Span: Adjustable to 0.05% of full span.
  • Thermal Effect: ±0.01% F.S./°F (0.005% F.S./°C).
  • Wetted Parts: 316, 316 L SS.
  • Housing: 316 SS.
  • Operating Temperature: 20 to 120°F (-7 to 49°C).
  • Fill Fluid: Silicone fluid, 200 cs, Dow Corning 200.
  • Process Connections: Dual-size 3/8" male NPT, 1/8" female NPT.
  • Electrical Connections: 3-position terminal block.
  • Weight: 11 oz. (312 g).

Applications include aerospace industries, factory automation, equipment monitoring and industrial research. The Series 642 Pressure Transmitter is ideal for use in harsh environments.

 
Model Number Pressure Range
 642-1  0 - 15 psig (0 - 1.03 bar)
 642-2  0 - 30 psig (0 - 2.07 bar)
 642-3  0 - 50 psig (0 - 3.45 bar)
 642-4  0 - 100 psig (0 - 6.90 bar)