Apparatus for counting cycles of fluid flow

Details Apparatus for counting cycles of fluid flow Apparatus for counting cycles of fluid flow

1993-03-29

1995-05-30

Noland, Thomas P.

Measuring and testing

Volume or rate of flow

Expansible chamber

235 94R, G01F 320

Patent

active

054191912

ABSTRACT:
A counting apparatus which is designed to be placed in parallel to a fluid flow line has a differential pressure switch which is placed across an orifice positioned within the fluid flow line. A counting mechanism is associated with the differential pressure switch to register a count when signaled by the differential pressure switch. The differential pressure switch is operable to react to the difference in pressure across the orifice to signal the counter to register a count. The orifice can be a fixed or a variable orifice. In another embodiment of the invention, a fixed or variable orifice is placed within the diaphragm of a diaphragm type differential pressure switch to adapt the differential pressure switch to be placed in series with the fluid flow line rather than in parallel to it.

REFERENCES:
patent: 4051724 (1977-10-01), Segal et al.
patent: 4257751 (1981-03-01), Kofahl
patent: 4489779 (1984-12-01), Dickinson et al.
patent: 4585060 (1986-04-01), Bernardin et al.
patent: 4594890 (1986-06-01), Boker, Jr.
patent: 4727936 (1988-03-01), Mioduszewski et al.
patent: 4848148 (1989-07-01), Capriatti et al.

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