Bronkhorst's new ES-FLOW ES-113C series of compact ultrasonic flowmeters/controllers has been designed for the OEM market (machine manufacturers) to measure or dose very low volume flows with high accuracy and linearity. Flow rates from 2 to 1500 ml/min can be measured using ultrasound emitted in a small-diameter tube, whatever the density, temperature and viscosity of the liquid. The instrument requires no calibration before using a different fluid. Combining a straight sensor tube with no dead volume and transducers positioned on the outer surface, this flowmeter is self-draining and easy to clean. Parts in contact with the fluid are made of stainless steel, and the outer casing is IP66/IP67 rated. The integrated PID control card can be used to drive a control valve or pump, enabling users to establish a complete control loop and a compact solution. What's more, the instrument features a range of communication options including fieldbus, customizable inputs/outputs and the ability to view temperature as a secondary output.
Applications for these new low-flow flowmeters and controllers include the food and pharmaceutical industries (e.g. additive dosing, sterilization), the medical sector (e.g. dialysis) and the chemical industry (e.g. catalysts and reagents). The instruments can be used in a wide range of processes requiring precise control of liquid products, such as measuring fuel consumption or dosing colorants, aromas and lubricants.
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