Thermal Mass Flow Meters

flow sensor Flow Sensor VA 520 Compressed Air Flow Meter
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VA570 Thermal Mass Flow Sensor Thermal Mass Flow Sensor ... Sensor with Integrated measuring section
Alicat Mass Flow Meters Alicat Mass Flow Meters -... Mass Gas Flow Meters

Thermal mass flow meters are a great choice for gas applications and available at a fraction of the price of Coriolis mass flowmeters. 

Where the accuracy offered by Coriolis meters is not required, thermal mass flow meters will usually prove to be a suitable solution.

How do Thermal Mass Flow Meters work?

The thermal mass meter measures gas flow based upon the concept of convective heat transfer. Two sensors are heated within the device to a precise temperature. The second sensor is cooled as the flowing gas passes by so has to be heated to match the temperature of the first (reference) sensor.  The gas mass flow can be calculated by measuring the energy required to balance the temperature of the two sensors.

Thermal Mass Flow Meter Applications

The majority of applications involving  thermal mass flow meters are usually for compressed air monitoring from compressors or for leak detection.  However, other gases such as argon, CO2, Nitrogen, Hydrogen, Helium, Propane, Methane, Oxygen end even Biogas can all be economically metered.

Flowquip's Thermal Mass Flow Meters

Flowquip Thermal, or Calorimetric, flow meters are available from ¼” to 2” bore fitted into a stainless steel measuring section (spool piece) with threaded or flanged process connections.  The flow sensor is calibrated whilst installed in the measuring section to ensure optimum accuracy and performance.  An integral display shows flow rate and total in various volumetric or mass engineering units and also provides a scaled pulse and 4-20mA output.  For pipe installations greater than 2” a hot-tap insertion version is available with flanged spool piece options.  This flow meter provides a very wide operating flow range with a measuring error of 1.5 to 2%.  A special precision calibration is available to provide a measuring error of < 1%.  Flowquip can also offer this flow meter with full ATEX Approval.  The calorimetric flow meter offers excellent accuracy and reliability at a very affordable price and on a short lead time too. 

For a quote and technical support on our Thermal Mass flow meters, click here to complete our quick online enquiry form, or call us on 01422 829920