Thermal Mass Flow Meter


Thermal mass flow meter, also known as a thermal dispersion or immersible mass flow meters, are precision instruments used to measure the mass flow of fluid flowing in a closed channel like a pipe or a duct. Tek-Thermal 1700B is specially designed for air and N2 (nitrogen) applications and measures the gas mass flow based on the thermal diffusion method. It has a more compact design and a thin insertion tube probe. It can be used on a pipe from 1″ to 20″. It is used in high-pressure applications.

  • Dual line LCD display with 3 setting button
  • No pressure loss and it can be used on pipes from 1″ to 20″
  • It has more compact design, which means smaller enclosure and thinner insertion tube probe
  • Measure mass flow and standard flow directly
  • It has self diagnostic function
  • It has high accuracy data acquisition circuit
  • High effective design of power supply
  • Wide Turndown ratio 100:1
  • Due to the thin diameter probe, it can be installed in pipe very easily and without stopping all the process
  • Cost-effective model
Service Air and Nitrogen
Flow Velocity Range 0.98 to 98 ft/sec or
1.9 to 190 ft/sec or
2.9 to 295 ft/sec or
Probe Material 316 SS
Accuracy ±0.5% of Reading
Measured Variables Mass Flow, Volume Flow, Total Flow, Temperature, Velocity
Response Time 1 second
Temperature Limits -40 °F to 302 °F (-40 °C to 150 °C)
Max. Pressure Limit 232 PSI
Mounting Orientation Horizontal or vertical
Process Connection Insertion NPT
Output 4 to 20mA and Pulse standard; Modbus RS485 or HART optional
Power Requirements 13.5 VDC to 42 VDC or 85 VAC to 265 VAC
Enclosure Rating IP65


Advanced technological development makes us capable of measuring almost anything but accuracy can only be achieved by selecting the right instrument and measuring the right parameters.


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