Volumetric flow metering device

Details Volumetric flow metering device Volumetric flow metering device

2007-09-04

2007-09-04

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

Using differential pressure

Reexamination Certificate

active

10519660

ABSTRACT:
A metering device for producing a precisely metered volumetric flow is provided. The metering device comprises two displacement devices that are operated in phase opposition. In this case, the shifting speeds of the volumes of the displacement devices are adjusted such that no compensation flow takes place. In this state, the volumetric flow delivered to the device to be tested is identical to the volumetric flow taken in by the other displacement device from the pressure source.

REFERENCES:
patent: 3440967 (1969-04-01), Pennther
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patent: 4191094 (1980-03-01), Flippo
patent: 5106268 (1992-04-01), Kawamura et al.
patent: 0370487 (1990-05-01), None
patent: 0471930 (1992-02-01), None
DE International Search Report for PCT/EP03/06419.

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