Developing an advanced colloid charge sensor

Our client needed a robust industrial colloid sensor suitable for in-line sensing in a harsh chemical environment, ruling out conventional electrochemistry and optical methods.

In the water processing industry, ensuring that suspended solids are coagulated and filtered is a time consuming and costly task, but with steep legislative penalties if the waste water is not treated correctly.

Zeta potential measurements are critical to ensure the correct dosing of coagulant and flocculant.We identified a number of physical properties of fluids which are closely correlated to zeta potential, and a preferred acoustic method for probing the physical properties.

Our ultrasound method utilises a solid-state sensor, with no moving parts. Our science and engineering teams have designed, built and tested the sensor in field conditions, showing a long sensor lifetime and high sensing accuracy.

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