Mass Flow - Digital

HFC-D-302B Digital 300 Vue Flow Controller

HFC-D-302B Digital 300 Vue Flow Controller

The Digital 300 Series of thermal mass flow meters and controllers are designed to accurately measure mass flow without corrections or compensations for gas pressure and temperature.

The Digital 300 Series uses a thermal-based mass flow sensor. This sensor is designed to provide exceptional linear response to changing flow rates. In addition, the electronics associated with each sensor are precisely tuned to give fast response times. The HFC-D-302A & B flow controllers feature a precision solenoid proportional control valve. Teledyne configures and tests each individual valve based on the users flow rate, gas, and pressure conditions.

“B” Series – 300 Vue

The B Series features an optional touchscreen display which allows the user to view and control the flow rate directly from the flow controller. The main screen displays the flow rate, the flow setpoint (in the case of a flow controller), the units of measure, and the valve mode (Auto, Open, Closed). The user also has access to menus that allow quick configuration of the flow instrument for changing requirements. The display can also graphically display changes in flow over time. The B Series also features a USB port which is standard on all meters and controllers. Both the A & B Series are compatible with Teledyne’s data logging software.


  • Available Flow Ranges:
    • 0-5 sccm up to 0-25 slm (N2 Equivalent)
  • Excellent Accuracy ±(0.5% of Reading +0.2% of Full Scale)
  • All-Metal Seals
  • HFC-D-302 Valve Features Kalrez Seat
  • Touchscreen Display Option (“B” Series)
  • USB (“B” Series)
  • 0-5 VDC, 0-10 VDC, 0-20 mA or 4-20 mA I/O
  • RS232 / RS485
  • Typical Settling Time:
    • HFM-D-300 < 1 second
    • HFC-D-302 1-2 seconds
  • Status LEDs
  • Auto-Zero (HFC-D-302 Controller Only)
  • Totalizer
  • Large Diameter Sensor Tube (low dP)
  • Operating Pressures to 500 psi or higher
  • NIST Traceable Calibration


  • Leak Testing
  • High Purity Gas Delivery
  • Thin Film Deposition
  • Gas Blending
  • Pharmaceutical
  • Fuel Cell R&D
  • Enviromental Monitoring
  • Medical Research


  • High Accuracy
  • Fast Metering Response
  • Superior Linearity
  • Rapid Controller Settling Time
  • Digital Extended Range