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FT2 Series

Thermal Gas Mass Flowmeter
Pipe Size: 0.25" - 12" / Insertion & In-Line
Capacity: 16 - 24,900 SCFM
Models: FT2
Manufacturer: Fox

A Thermal Mass Flow Meter is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a gas.

Fox Flow Meters use a Constant Temperature Differential (ΔT) technology. The sensor has two elements. The Reference RTD measures the gas temperature. The electronics heats the Heated Element above the gas temperature. It is the job of the electronics to maintain a constant ΔT between the gas temperature and the Heated Element. As mass flow increases, the increased numbers of gas molecules remove more heat from the Heated Element.

The electronics senses this temperature reduction and adds additional power to the heated element in order to maintain a constant ΔT. The amount of power delivered to the Heated Element is proportional to the mass flow rate. The microprocessor then linearizes this signal to deliver a linear output.

Features & Benefits

  • Measures gas flow rate in SCFM, NM3/hr, Lbs/hr, Kg/hr, & many more
  • Wide measurement range; 100 to 1 turndown typical
  • Measures process gas temperature
  • 4 to 20 mA for flow rate & temperature; pulse output for flow/total
  • RS232 for connecting a Palm Handheld or computer; RS422/RS485-Modbus, Profibus-DP, DeviceNet or Ethernet


Download Product Literature Download PDF

FT2 Series - Flow Meter