Patents Assigned to Pollution Control & Measurement (Europe) Ltd.
  • Detecting particles in a gas flow
    Patent number: 5591895
    Abstract: In a method for detecting particles in a gas flow, a probe 8 is charged triboelectrically by particles 10 in the flow and the quantities of electrical charges transferred to the probe are evaluated to provide an indication of the particle flow in the gas flow. In order to reduce the effect of variations in "gas flow related variables" other than those relating to particle flow, an alternating component in the signal caused by the triboelectrical charging of the probe is monitored.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: January 7, 1997
    Assignee: Pollution Control & Measurement (Europe) Ltd.
    Inventor: Michael Rigby