ES-FLOW™ series Low-Flow Ultrasonic Liquid Flow Meters / Controllers General ES-FLOW are Volumetric Liquid Flow Meters/Controllers for very low flowranges. The instruments operate on a innovative measuring principle, usingultrasound in a very small, straight tube. A wide range of liquids canbe measured independent of fluid density, temperature and viscosity. Lowest range 4 ... 200 ml/min Highest flow approx. 1500 ml/min, depending on e.g. the available pressuredrop. Due to the combination of a straight sensor tube with zero dead volume,self-drainabi lity, orbital TIG-welding and hygienic connections, this flowmeter can be used for hygienic applications. Wetted parts are made of stainlesssteel, except for the rubber gaskets at the Triclamp or flange connections.The exterior design is according to IP67. For non-hygienic applications,the instruments can also be equipped with compression type fittings. The user interface is a capacitive touchscreen with a TFT display to operateand readout the instrument. Flow control The flow meter can be connected to a dosing pump or a control valveto form a closed control loop. The electronic control function forms partof the normal circuitry in the meter.