Gas Flow Meter

DFM Series

DFM is Delta’s new airflow sensor series. It is compact and easy to use and is especially useful for installation in confined spaces.

DFM uses thermopile technology which is more accurate and stable than traditional sensing methods. DFM also has a 3-layer tranquilizer to stabilize gas flow, no need to reserve pipe length to avoid air turbulence.

Features & Benefits

  • RS-485 communication
  • Accurate measurement
  • Two-sided gas flow measurement
  • Embedded 3-layer tranquilizer to stabilize gas flow
  • Support analog and digital output
  • High quality LCD display


  • Cylinder gas flow usage measurement
  • Gas flow measurement of static eliminator
  • Coating gas flow measurement
  • Equipment gas flow consumption measurement
  • Gas filling flow control for food packaging


  • Offers voltage, current, and digital signal outputs
  • Provides Ф8 quick connector for pipes of 8mm diameters
  • Built-in measurement functions include: instantaneous flow value, accumulated flow value, reverse display, value default, locked buttons, energy-saving mode, analog output, and retarded alarm
  • Displays up to 4-digit instantaneous flow values, or 8-digit accumulated flow values
  • LCD screen can be set up as a monochrome or two-color display based on users’ requirements
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