Electronic and Mechanical Flow Meters
Variable area flow meters, piston type flowmeters, air velocity indicators, electronic mass flowmeters and controllers, ultrasonic/doppler flowmeters, turbine meters, VORTEX, magnetic flowmeters and more
![Turbine Flow Meters with Pulse Output](https://jakar.s18.cdn-upgates.com/_cache/7/6/76ceb0f604b0adf23d34aa77d1524155-ftb1400-series-l.webp)
Turbine Flow Meters with Pulse Output
![Low Flow Electromagnetic Flow Meter](https://jakar.s18.cdn-upgates.com/_cache/d/a/da2a9e6eb5a2de40d2c6cb072df3b84c-fmg70b-l.webp)
![Low Flow Electromagnetic Flow Meter](https://jakar.s18.cdn-upgates.com/_cache/c/b/cb3fbc7250fe2a3756913ac3f4704ec0-fmg70b-l2.webp)
Low Flow Electromagnetic Flow Meter
![Ultrasonic Flow Meter Kit](https://jakar.s18.cdn-upgates.com/_cache/f/4/f4d35d21043b5b616172f0dc693837f7-fdt-21-l.webp)
![Ultrasonic Flow Meter Kit](https://jakar.s18.cdn-upgates.com/_cache/3/5/35930c978774e7b7436c66e3425c42ea-fdt-21-l2.webp)
Ultrasonic Flow Meter Kit
![Brewery & Food Industry Indicating Flow Meters](https://jakar.s18.cdn-upgates.com/_cache/5/f/5f1b01e0aaf16d715ca195879d3bd262-g2-series-l.webp)
![Brewery & Food Industry Indicating Flow Meters](https://jakar.s18.cdn-upgates.com/_cache/8/d/8dea23f5dbd79bbd76e1a73b4683be85-g2-series-l4.webp)
Brewery & Food Industry Indicating Flow Meters
![Gas Mass Controllers With or Without Integral Display](https://jakar.s18.cdn-upgates.com/_cache/0/d/0dbae0a0b61ff56052d8e0c305f0c966-fma5000a-l.jpg)
![Gas Mass Controllers With or Without Integral Display](https://jakar.s18.cdn-upgates.com/_cache/7/4/7400daa82846bd0dfc14b689f5a9be62-fma5000a-l2.jpg)
Gas Mass Controllers With or Without Integral Display
![Portable Digital Ultrasonic Flow Meter Kit](https://jakar.s18.cdn-upgates.com/_cache/a/c/ac8cdc20a9cd4d9906ac6e1797ab6a96-fdt-25-l.webp)
![Portable Digital Ultrasonic Flow Meter Kit](https://jakar.s18.cdn-upgates.com/_cache/9/a/9a1395a4bed0c86928c15da4117cabdc-fdt-25-l6.webp)
Portable Digital Ultrasonic Flow Meter Kit
![Variable Area Flow Meters for Gases and Liquids](https://jakar.s18.cdn-upgates.com/_cache/c/0/c039807d2819f5ee88ad8033ab9b6b92-fld-l2.jpg)
![Variable Area Flow Meters for Gases and Liquids](https://jakar.s18.cdn-upgates.com/_cache/9/7/9731124d1132991ec94226a733c19c1e-fld-l.jpg)
Variable Area Flow Meters for Gases and Liquids
![Low Pressure Drop Gas Mass Flow Controllers For Clean Gases](https://jakar.s18.cdn-upgates.com/_cache/e/4/e40c0f119bbbb8a640def8cda66a1840-fma-lp2600a-l2.webp)
![Low Pressure Drop Gas Mass Flow Controllers For Clean Gases](https://jakar.s18.cdn-upgates.com/_cache/e/7/e750c34d745f943bf8bd3b771a625426-fma-lp2600a-l.webp)
Low Pressure Drop Gas Mass Flow Controllers For Clean Gases
![Hygienic Turbine Flowmeters For Process Liquid Measurement](https://jakar.s18.cdn-upgates.com/_cache/7/5/753ca790c5a2ce5a73769d5ad42d6282-ftb400-l.jpg)
Hygienic Turbine Flowmeters For Process Liquid Measurement
![Acrylic Variable Area Flow Meters For Air or Water](https://jakar.s18.cdn-upgates.com/_cache/a/d/addd05afdff2298d6bcc968455c20237-fl2000-l.jpg)
![Acrylic Variable Area Flow Meters For Air or Water](https://jakar.s18.cdn-upgates.com/_cache/1/b/1b3933962f9fb58d0fdb841f75d8bd7a-fl2000-l2.jpg)
Acrylic Variable Area Flow Meters For Air or Water
![Mass Flow Controllers With Or Without Integral Display](https://jakar.s18.cdn-upgates.com/_cache/7/c/7cb62cac98102aaf680f5909646dd69a-fmaa2000-l.jpg)
Mass Flow Controllers With Or Without Integral Display
![Handheld Environmental Hygro-Anemometer](https://jakar.s18.cdn-upgates.com/_cache/7/4/74704a2810edd6013649e44c09674446-hhc260-series-l.jpg)
Handheld Environmental Hygro-Anemometer
Technical Learning
![What is a mass flow meter and how does it work?](https://jakar.s18.cdn-upgates.com/_cache/9/a/9a13b643fea708d9c6d4098002ef407f-massflow.jpg)
What is a mass flow meter and how does it work?
A thermal mass flow meter measures the flow rate of gas mass based on the convective heat transfer of a heated surface to the flowing fluid. The components of a basic thermal mass flow meter include two temperature sensors with an electric heater between them. The heater can protrude into the fluid stream or can be external to the pipe.
In the past, mass flow was often calculated from the outputs of a volumetric flow meter and a densitometer. Density was either directly measured, or was calculated using the outputs of process temperature and pressure transmitters...