ROTAMETERs™ (Variable Area Meters) are named after ROTA, one of the European inventors of this flow principle in the beginning of the century. ROTA invented the rotating float, which is self-guiding and has less friction in the pipe so that a more precise measurement is possible.
Yokogawa ROTAMETERs are available with metering tubes manufactured from either glass, plastic or metal.
Our ROTAMETER™ family includes units 6mm to 125mm line sizes, temperatures from -180 to +400ºC, flange ratings to 1500#, ±1.6% accuracy class and turndown's of 10:1. ROTAMETERs™ offer a very low cost, easy to install solution to flow measurement.
Once considered as only a water or air flowmeter, ROTAMETER™ is now world proven in applications such as industrial gases, viscous/non conductive chemicals, steam and fuels.