Published August 4, 1981 | Version v1
Patent Metadata-only

Apparatus for measuring the local void fraction in a flowing liquid containing a gas

Creators

Description

The local void fraction in liquid containing a gas is measured by placing an impedance-variation probe in the liquid, applying a controlled voltage or current to the probe, and measuring the probe current or voltage. A circuit for applying the one electrical parameter and measuring the other includes a feedback amplifier that minimizes the effect of probe capacitance and a digitizer to provide a clean signal. Time integration of the signal provides a measure of the void fraction, and an oscilloscope display also shows bubble size and distribution

Availability note (English)

U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.

Additional details

Additional titles

Augmented title (English)
Patent

Publishing Information

Imprint Pagination
v p.
IPC:
Int. Cl.G01R 27/02.
IPC
Int. Cl.G01R 27/02.
Patent number
US patent document 4,282,481/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
13669222
Subject category
S42: ENGINEERING; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BUBBLES; DISTRIBUTION; ELECTRIC MEASURING INSTRUMENTS; GASES; LIQUID FLOW; PROBES; SIGNALS; SIZE; TWO-PHASE FLOW; VOID FRACTION
Descriptors DEC
ELECTRICAL EQUIPMENT; FLUID FLOW; FLUIDS; MEASURING INSTRUMENTS