Download detailed specifications for this product

Download PDF

Wet/Wet Differential Pressure Transmitter

Series 645

Series 645 Wet/Wet Differential Pressure Transmitters are designed for use with compatible gases and liquids which can be applied to both the pressure and reference ports. Quick response capacitance sensor delivers a 4 to 20 mA output signal proportional to differential pressure with ±.25% accuracy. The Series 645 transmitters are ideal for process control, filter condition monitoring, refrigeration equipment, pump speed control, HVAC equipment, and liquid level measurement. For ease of installation and maintenance, order optional 3-valve manifold assembly. Bleed ports allow for total elimination of air in the line and pressure cavities.

  • Service: Compatible gases or liquids on both pressure and reference sides
  • Wetted Materials: 17-4 PH stainless steel, 300 Series stainless steel, Fluoroelastomer and Silicone O-rings and bleed screw seals
  • Accuracy: ±0.25% FS (RSS)
  • Temperature Limits: Operating: 0 to 175°F (-22 to 80°C), Storage: -65 to 260°F (-54 to 126°C)
  • Pressure Limits: (High side) 1 to 5 psi: 20 x FS, 10 to 25 psi: 10 x FS, 50 psi: 5 x FS, 100 psi: 2.5 x FS; (Low side) 2.5 x FS
  • Thermal Effect: (Includes zero and span) ±0.02% FS/°F, 30 to 150°F (-1 to 65°C)
  • Power Requirements: 11 to 30 VDC
  • Output Signal: 4 to 20 mA, 2-wire
  • Zero and Span Adjustments: Adjustable, ±1 mA, non-interactive
  • Response Time: 30 to 50 msec
  • Loop Resistance: 0 to 1000 ?
  • Electrical Connection: Barrier strip terminal block with conduit enclosure and .875" (22 mm) diameter conduit opening
  • Process Connection: 1/4" - 18 female NPT
  • Housing: Stainless steel/aluminum, NEMA 4X (IP56)
  • Weight: 14.4 oz (0.4 kg)
  • Agency Approvals: CE




    Not Available

    Please choose from our customization options and enter under comments while inquiring about this product`

Inquiry for

required after months

Email Details Of Wet/Wet Differential Pressure Transmitter - Series 645