Testing device for flow meters
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United States of America Patent
Stats
-
Oct 28, 1986
Grant Date -
N/A
app pub date -
May 25, 1984
filing date -
Dec 31, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a testing device for at least one flow meter installed in a pipeline. The device includes a calibration container connected to the pipeline across a switch-over valve. A measuring piston is guided for reciprocating movement in the container between a starting and a terminal position. The measuring piston supports two signal releasing rings which are spaced apart from the other about a distance which when multiplied by the inner clearance of the calibration container determines a calibration volume of the measuring path of the piston. At least one signal generator is installed in the wall of the calibration container and cooperates in a contactless manner with the first and second signal releasing rings so as to produce start and stop pulses for one measuring cycle. The flow meter is connected to a pulse generator responsive to the flow rate and connected to an evaluation circuit which after completion of a measuring cycle compares the counted pulses with the calibration volume.
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