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Wet/Wet Differential Pressure Transmitter

Series 629

The Series 629 Differential Pressure Transmitter monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy. The design employs dual pressure sensors converting pressure changes into a standard 4-20 mA output signal for two wire circuits. Small internal volume and minimum moving parts result in exceptional response and reliability. Terminal block zero and span adjustments are easily accessed under the top cover. The Series 629 Differential Pressure Transmitter is designed to meet NEMA 4X (IP66) construction.

  • Service: Compatible gases and liquids
  • Wetted Materials: Without valve: 316, 316L SS. Additional wetted parts with 3-way valve option: Buna-N, silicone grease, PTFE, brass 360, copper, reinforced acetal copolymer
  • Accuracy: ±0.5% F.S. (includes linearity, hysteresis, and repeatability)
  • Temperature Limits: 0 to 200°F (-18 to 93°C)
  • Compensated Temperature Limits: 0 to 175°F (-18 to 79°C)
  • Pressure Limits: See Ordering page
  • Thermal Effect: 0.02%/°F (0.036%/°C) includes zero and span
  • Power Requirements: 13 to 30 VDC
  • Output Signal: 4 to 20 mA. Optional 0-5 or 0-10 VDC
  • Response Time: 50 msec
  • Loop Resistance: 0-1300 ohms maximum for current output. For voltage outputs, minimum load resistance: 2000 ohms
  • Electrical Connections: Terminal block; 1/2" female NPT conduit
  • Process Connection: 1/4" female NPT
  • Enclosure Rating: Designed to meet NEMA 4X (IP66)
  • Mounting Orientation: Mount in any position
  • Weight: 10.1 oz (286 g)
  • Agency Approvals: CE




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