Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1977-03-28
1979-03-20
Kreitman, Stephen A.
Measuring and testing
Gas content of a liquid or a solid
By vibration
73194EM, 324204, G01N 2700
Patent
active
041447417
ABSTRACT:
A detector to be inserted into a flowing conductive fluid, e.g. sodium coolant in a nuclear reactor, comprising at least one exciting coil to receive an a-c signal applied thereto and two detecting coils located in the proximity of the exciting coil. The difference and/or the sum of the output signals of the detecting coils is computed to produce a flow velocity signal and/or a temperature-responsive signal for the fluid. Such flow velocity signal or temperature signal is rectified synchronously by a signal the phase of which is shifted substantially .+-. 90.degree. with respect to the flow velocity signal or temperature signal, thereby enabling the device to detect voids in the flowing fluid without adverse effects from flow velocity variations or flow disturbances occurring in the fluid.
REFERENCES:
patent: 2583724 (1952-01-01), Broding
patent: 3529234 (1970-09-01), Keen
patent: 3824456 (1974-07-01), Wiegand
patent: 4014206 (1977-03-01), Taylor
Adachi Kiyoshi
Kuwahara Hajime
Nakamoto Koichiro
Ohyama Nobumi
Doryokuro Kakunenryo Kaihatsu-Jigyodan
Kreitman Stephen A.
Yokogawa Electric Works, Ltd.
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