Inductive flow probe for measuring the flow velocity of a stream

Details Inductive flow probe for measuring the flow velocity of a stream Inductive flow probe for measuring the flow velocity of a stream

1988-10-14

1990-11-06

Orsino, Joseph A.

Measuring and testing

Volume or rate of flow

With indirect temperature or density compensation

7386113, 7386115, 376246, G01F 158

Patent

active

049676032

ABSTRACT:
An inductive flow probe for measuring the flow velocity of a stream of liquid metal by insertion of the probe into the stream. The probe includes a probe tube having first and second regions therein, at least one permanent magnet disposed in the first region for providing a magnetic field with a direction substantially transverse to the direction of the stream, and a first pair of thermoelements positioned in the first region within the magnetic field. The invention further includes a second pair of thermoelements positioned in the second region outside the magnetic field and an evaluation circuit coupled to the first and second pairs of thermoelements. The evaluation circuit generates a temperature-compensated signal corresponding to the velocity of the stream of liquid metal.

REFERENCES:
patent: 3701280 (1972-10-01), Stroman
patent: 3824456 (1974-07-01), Wiegand
patent: 4008609 (1977-02-01), Lambrecht et al.
patent: 4033830 (1977-07-01), Fletcher, III
patent: 4145924 (1979-03-01), Muller
patent: 4622202 (1986-11-01), Yamada et al.
patent: 4736798 (1973-06-01), Wood et al.
patent: 4768384 (1988-09-01), Flecken et al.
"Permanent Magnet Flow Measuring Probe for Liquid Metals", St. Muller, G. Thun, Kernforschungszentrum Karlsruhe, 11/77.
"Turbulent Heat Transport in Liquid Sodium", Thomas von Weissenfluh, ETH Zurich (1984), Diss. ETH No. 7464.

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