| 摘要 |
An instrument for monitoring the build-up of fouling deposits on the liquid-handling surfaces of cooling towers, heat exchangers and other apparatus, subject to liquid fouling, is disclosed in this application. The build-up is monitored by sensing the increasing drag on a rotor immersed in the liquid, as the rotor and adjacent stationary surfaces become fouled. The drag is measured by a torque transducer, which is connected to read-out devices by means of a computer. The instrument may be used as an integral part of a feedback control system, or for evaluating fouling control strategies. The computer enables the instrument to operate in different modes, as desired.
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