testo 6447 compressed air meter - sensor can also be changed under pressure

  • Parameters: standard volumetric flow rate in Nm³/h or Nl/min; consumption quantity in Nm³
  • 14 diameter types between DN 65 (21/2“) and DN 250 (10“)
  • Output signals: The following 2 outputs are enabled for selection at the same time:
    • Analog output, 4 to 20 mA (4-wire)
    • Pulse output
    • 2 switch signals, programmable (dependent on consumption or volumetric flow rate, NC or NO contact, hysteresis, window)
  • Choice of pipe materials: Stainless steel or galvanized steel
  • All versions with display: volumetric flow rate or consumption
  • Patented screw fitting for quick and easy removal of sensor electronic unit under pressure, without interrupting operation, for cleaning and recalibration
  • Design with inflow stretch
    • Advantage: reliable accuracy, including in installed state!
    • Reason: The sensor is calibrated to the pipe section (Nm³/h not m/s) -> optimum flow profile, hence no loss of accuracy through specification of incorrect pipe diameter, incorrect positioning (depth/torsion)!


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