Process for monitoring flow in a pneumatic conveying system.

摘要

A process for monitoring the flow of solid particles passing through a conduit 3 in a pneumatic conveying system comprises detecting the intensity of the stress waves within the wall of the conduit, by means of a transducer 6 coupled to the surface of the wall of the conduit, analysing the signal from the transducer and comparing the result to those obtained under known operating conditions such that when operating conditions repeat themselves they may be recognised or a change in operating conditions may be recognised. The process can provide a means for giving advance warning of a possible blockage or means for warning that a blockage has occurred. It can also give an indication of the mass of solid which is passing along the conduit. <IMAGE>