Streaming current detector probe

Details Streaming current detector probe Streaming current detector probe

1990-08-16

1992-06-09

Wieder, Kenneth A.

Electricity: measuring and testing

A material property using electrostatic phenomenon

In a liquid

324447, G01N 2760

Patent

active

051210622

ABSTRACT:
A streaming current detector has a reciprocating piston with a sensing region having a uniform clearance from the casing which is sufficiently large to avoid significant shearing of the particles in the fluid of the sample stream. A separate guiding region of the piston has a sufficiently tight fit in the casing for smooth reciprocation. A relief region of the piston has the largest clearance from the casing to provide a sufficiently large area to control a constant low velocity of the sample fluid.

REFERENCES:
patent: 3368145 (1968-02-01), Gerdes
patent: 3369984 (1990-02-01), Gerdes
patent: 3399133 (1968-08-01), Gerdes et al.
patent: 3614602 (1971-10-01), Ciotti
patent: 4446435 (1984-05-01), Canzoneri
patent: 4769608 (1988-09-01), Bryant
patent: 4825169 (1989-04-01), Carver
patent: 4961147 (1990-10-01), Moore

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