Thermal mass flow meters are an excellent choice for gas applications, available at a fraction of the price of Coriolis mass flow meters.
When the accuracy of Coriolis meters isn't necessary, these flow meters often prove to be a suitable solution.
Thermal mass meters measure gas flow based on convective heat transfer. Inside the device, two sensors are heated to a precise temperature. As the flowing gas cools the second sensor, it must be reheated to match the temperature of the first (reference) sensor. By measuring the energy required to balance the temperatures, the gas mass flow can be calculated.
Most applications involving thermal mass meters are for monitoring compressed air from compressors or detecting leaks. However, other gases such as argon, CO2, nitrogen, hydrogen, helium, propane, methane, oxygen, and even biogas can be economically metered.
Flowquip offers thermal, or calorimetric, flow meters ranging from ¼” to 2” bore, fitted into a stainless steel measuring section with threaded or flanged process connections. The flow sensor is calibrated while installed in the measuring section to ensure optimal accuracy and performance. An integral display shows flow rate and total in various volumetric or mass engineering units and provides a scaled pulse and 4-20mA output. For pipe installations larger than 2”, a hot-tap insertion version is available with flanged spool piece options. This flow meter offers a wide operating flow range with a measuring error of 1.5 to 2%. Additionally, a special precision calibration is available to achieve a measuring error of less than 1%. Furthermore, Flowquip also offers this flow meter with full ATEX Approval. Consequently, the calorimetric flow meter provides excellent accuracy and reliability at an affordable price and with a short lead time.
For a quote and technical support on our thermal mass flow meters, click here to complete our quick online enquiry form, or call us at 01422 829920.
Should you wish to hire a flow meter, this can be done through our sister company, Flowhire Ltd.
