Mechanical Flow Meters They are the most common and economical type of water flow meters which perform flow measurement through turbine rotation with a shunt, propeller, or paddle wheel design. The ...

Insertion vortex meters work well on very large pipes as they can be inserted into the flow by hot tapping with a retractor. Ultrasonic Flow Meter Ultrasonic water flow meters measure the speed of ...

Japan's Panasonic says its new GB-L1CMH1A meter can operate without changing the state of the fuel cell. It says it can also measure a wide range of hydrogen flow rates and concentrations.