Patent Number: 6,192,740

Title: Method and apparatus for detecting particles in a flow

Abstract: An apparatus for detecting particles in a flow comprises a probe 1 positioned so that it projects into the flow and is charged triboelectrically by the particles in the flow. An electric circuit is coupled to the probe 1 and includes evaluating means for monitoring a signal from the probe 1 and for providing an output in dependence on the signal generated by the triboelectric charging of the probe 1. The part of the probe 1 that projects into the particle flow comprises an electrically conducting core covered with an insulating layer 2 which insulates the core from the particle flow.

Inventors: Thomas; Victor Frederick (Huntingdon, GB), Rigby; Michael (Huntingdon, GB)

Assignee: PCME Limited

International Classification: G01F 1/74 (20060101); G01N 27/60 (20060101); G01F 1/56 (20060101); G01N 15/06 (20060101); G01F 1/64 (20060101); G01N 025/00 ()

Expiration Date: 02/27/2018