Bronkhorst ES-FLOW ultrasonic flow meters

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Bronkhorst has released an updated generation of ES-FLOW ultrasonic flow meters for low flow rates of water, additives and other liquid substances. The improved flow meters measure volume flow from 2 up to 1500 mL/min with higher precision, high linearity and low pressure drop, using ultrasound in a small-bore tube.

The instruments are liquid-independent, due to a measuring principle in which the actual sound velocity is accounted for in the flow calculations. The combination of a straight sensor tube with zero dead volume means that the flow meter is self-draining. Having orbital TIG-welded flanges, the meter is CIP or SIP cleanable, and now meets 3-A sanitary standards for hygienic applications. Wetted parts are made of stainless steel, and the exterior design is rated to IP66 or IP67.

The local user interface is a capacitive touchscreen with a TFT display. For remote operation, Bronkhorst added a variety of Ethernet-based fieldbuses to the already available range of analog and digital communication options. The onboard PID controller can be used to drive a control valve or pump, enabling users to establish a complete, compact control loop.

Typical applications can be found in food, beverage and pharmaceuticals (eg, additives, sterilisation of packages), medical and chemical (eg, catalysts, reagents) and many other markets that require precision fluid handling, such as fuel consumption measurement and dosing of hydrocarbons, demineralised water, colourants or lubricants.