Thermal pulse emitter or detector element

Details Thermal pulse emitter or detector element Thermal pulse emitter or detector element

1982-09-14

1985-03-05

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

73204, G01F 168, G01F 170

Patent

active

045023395

ABSTRACT:
Disclosed is an emitting or detecting element for an in-line flow measuring instrument operating on the thermopulse-injection and transit time measuring principle. The element is composed of a severally meandering resistance path spread only across a partial cross-section which is small compared to the flow cross-section and which is anchored at its mutually insulated reversing points by means of holding tapes and electrode leads into the flow-wall of the measuring instrument. The emitting or detecting element can be produced in the most diverse ways. For instance, it can be etched out of thin metal foils by lithographic methods, it can be stamped out of sheets, and also it can be made by welding resistance wires together.

REFERENCES:
patent: 1260498 (1918-03-01), Wilson
patent: 1487356 (1924-03-01), Packard
patent: 2724271 (1982-06-01), Shawhan et al.
patent: 4228683 (1980-10-01), Juffa et al.
patent: 4237730 (1980-09-01), Feng
patent: 4299124 (1981-11-01), Knapp et al.
patent: 4299125 (1981-11-01), Romann et al.
patent: 4326412 (1982-04-01), Kobayashi
patent: 4338814 (1982-07-01), Romann

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