Krohne - Variable area, magnetic-inductive, ultrasonic, mass flowmeters; level measuring instruments; flow controllers. Manufacturer, global supplier. EESIFLO - Supply and rent out ultrasonic flowmeters for liquid control and measurement applications. Dynasonics (USA) - Ultrasonic and magnetic flow measurement. Flotec UK Limited (UK) - Transit-time clamp-on Ultrasonic flowmeter for fluid flow measurement Control Electronics Inc. - Manufacturers and designers of ultrasonic open-channel flowmeters, Doppler flowmeters, level monitors and pump controllers. All meters have built-in data-logging. Badger Meter, Inc. (USA) - Manufacturer of products using flow measurement and control technology serving industrial and utility markets worldwide. Greyline Instruments (USA, Canada) - Manufacturer of non-contacting Flow Meters, Portable Doppler Flow Meters, Ultrasonic Level Controls, Tank Farm Monitors, Doppler Flow Meters, Flow Switches, Open Channel Flow Monitors J-TEC Associates, Inc. (USA) - founded in 1968, providing ultrasonic vortex flowmeters for engine, air, gas, steam, liquid applications. Quantum Hydrometrie GmbH (Germany) - develops and sells hydrometric measurement solutions. Compuflow (USA) - Ultrasonic Doppler Flowmeter.