Particle sensor

Details Particle sensor Particle sensor

1997-06-19

1999-07-13

Patel, Harshad

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73 6171, G01N 1506

Patent

active

059229462

ABSTRACT:
A particle sensor includes a sensor element comprising (a) a vibrating section having such a mass that is sensitive to the collision of solid particles contained in a fluid, with the vibrating section and (b) a detecting section for detecting the vibration of the vibrating section caused by said collision and converting the vibration to electric signals, a housing for fixing said sensor element, a fluid inlet, and a fluid outlet. The particle sensor has a characteristic structure of having a net at the upstream side of the sensor element in order to allow the fluid entering the particle sensor from the fluid inlet to pass through said net and then contact with the sensor element. With this particle sensor, the detection of the solid particles contained in a fluid also containing bubbles can be made at a higher accuracy because the vibration caused by the bubbles, containing the primary resonance vibration of the sensor element is decreased.

REFERENCES:
patent: 3656253 (1972-04-01), Oliin
patent: 4432228 (1984-02-01), Kuschmierz et al.
patent: 5698931 (1997-12-01), Shibata et al.

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