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**** THIS PRODUCT IS NO LONGER OFFERED - CHECK WITH US FOR A REPLACEMENT ****
 

Dwyer Series 639 Pressure Transmitter

Precision, Accuracy ±0.08%, Two Wire Operation

The Series 639 Pressure Transmitters offer outstanding performance for critical applications with an accuracy of 0.08% F.S. Best Straight Line for combined effects of non-linearity, hysteresis, and repeatability. Ideal for industrial environments, sensor resists effects from shock and vibrations. Zero and span trimpots located on the rear of the transmitter body can be independently adjusted. Transmitters feature RFI and EMI, reverse polarity, and over voltage protection. Units are supplied with a 3 foot (1m) integral cable with stripped ends for easy installation.

 
 
-- PHYSICAL DATA
 
  • Service: Liquid, Gas or Vapor
  • Output: 4-20 mA DC, max. (2 wire)
  • Supply Voltage: 9 to 30 VDC
  • Loop Resistance: 750 @ 24 VDC
  • Temperature Limits: Ambient 15 to 122°F (-10 to 50°C). Process Interface -20 to 250°F (-29 to 121°C)
  • Overrange: 300% upper range limit
  • Accuracy: ±0.08% FS BSL including non-linearity, hysteresis, and repeatability
  • Stability: 0.1% F.S. annually
  • Zero and Span Adjustable: ±5% each
  • Thermal Effect: (includes zero and span) 0.005% F.S./°F, -20 to 250°F (-29 to 121°C)
  • Wetted Parts: 316 SS, Hastelloy C
  • Storage Temperature: -40 to 250°F (-40 to 121°C)
  • Fill Fluid: Silicone oil
  • Process Connection: ¼" NPT(F)
  • Electrical Connection: 3 ft. (1 m) integral cable with stripped ends
  • Weight: 1.1 lbs. (0.50 kg)
 
-- MODELS NUMBERS (stock shown in bold)
 
Model Number Pressure Range
 639-0  0 to 1.5 psig (0 to 0.1 bar)
 639-1  0 to 10 psig (0 to 0.7 bar)
 639-2  0 to 30 psig (0 to 2 bar)
 639-3  0 to 100 psig (0 to 7 bar)
 639-4  0 to 300 psig (0 to 20 bar)