BIOMASS MONITOR is a highly precise sensor for determination of biomass concentration in liquids. The instrument is based on the measurement of sound velocity and attenuation. It is designed for applications requiring maximum sensitivity and highest accuracy. It is easy to operate and main-tenance-free. For sound velocity measurement a sound pulse is created by a piezo-element in a sonic transmitter. It moves perpendicular to the product flow towards a sonic receiver where it is detected. Since the distance between transmitter and receiver is known, the sound velocity can easily be calculated by measuring the travel time of the sonic signal. As a specific property of each liquid the relation between concentration and sound velocity as well as the attenuation of the sound signal can be described by a mathematical polynomial. With decades of experience and our own laboratory facilities, Centec know the polynomials for a large number of products. Any temperature drifts of the measured signal are automatically compensated for.
European patent application: 1 439 438 B1
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