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thermal mass flow controller / for gas / digital / analog
HFM-D-301A Teledyne Hastings Instruments



  • Technology:

    thermal mass

  • Fluid:

    for gas

  • Other characteristics:

    digital, analog, stainless steel

  • Flow rate:

    Max.: 3,000 l/min (793 us gal/min)

    Min.: 0 l/min (0 us gal/min)

  • Pressure:

    500 psi


Mass flow techniques provide more RELIABLE, REPEATABLE AND ACCURATE gas flow rate measurements compared to volumetric methods such as rotometers and turbine meters.

300-D-Series mass flow instruments have flow ranges from 0-5 sccm to 0-10,000 slm; use all metal seals on certain models, provide analog and digital outputs, and are constructed of stainless steel.

Self diagnostics of the sensor, valve and overflow are included in the digital features. Also of interest is the auto zero feature which detects when the valve is closed and automatically resets the zero. These mass flow meters and controllers can store up to 10 calibrations of different ranges and gases. When monitoring different gases in the same level of magnitude, (flow rate, molecular weight) this instrument is economically superior and more efficient when changing gases. Another feature is the built in totalizer for monitoring gas usage under user set conditions.

± (0.5% of reading + 0.2% of full scale) Accuracy for 3,000 slm

Now you can get the performance of the advanced Digital 300 Series of Mass Flow Meters and Controllers in an IP-67 rated enclosure.
The IP, or Ingress Protection rating, describes the instrument’s ability to operate in challenging environments. The first number, 6, indicates that the flow instrument has total protection against dust. The second number, 7, refers to protection from liquids.