Apparatus for determining the characteristic of a flowmeter

Details Apparatus for determining the characteristic of a flowmeter Apparatus for determining the characteristic of a flowmeter

Category

G - Physics

Subcategory

01

Subsubcategory

F

CPC

73/144, 73/0.5

IPC codes

G01F 3/16 (2006.01) G01F 25/00 (2006.01)

Type

Patent

Patent number

CA 1181964

Description

Abstract of the Disclosure A fluid displacement measuring cylinder has near its ends, respectively, an inlet and an outlet. A fluid dis- placement measuring piston is adapted to travel through the measuring cylinder as a fluid barrier. A control piston having first and second sides is adapted to travel through the control cylinder as a fluid barrier. A rod connects the control piston only to the side of the measuring piston facing toward one end of the measuring cylinder. A gas pressurized plenum chamber is connected to the control cylinder so the force of the gas pressure urges the measuring. piston toward the other end of the measuring cylinder. The movement of the measuring piston through the measuring cylinder is sensed and the movement of the control piston through the control cylinder is fluidically controlled. The pressure in the plenum chamber, which has a substan- tially larger volume than the control cylinder, is selected so as to cancel the force imbalance caused by the rod.

Application Number

407976

Affiliated with

Also associated with

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