Device for detecting flow of a fluid including a temperature mea

Details Device for detecting flow of a fluid including a temperature mea Device for detecting flow of a fluid including a temperature mea

1999-04-09

2000-05-09

Patel, Harshad

Measuring and testing

Volume or rate of flow

Thermal type

374179, G01F 168, G01K 700

Patent

active

060587741

ABSTRACT:
The invention relates to a device for detecting flow of a fluid, having a temperature measuring instrument (4), which comprises at least a first and a second temperature measuring point (P1 and P2), and a heating element (20), which is disposed substantially in the direction of flow of the fluid between the first and the second temperature measuring point (P1 and P2). The special feature of the invention lies in that the temperature measuring instrument (4) comprises a thermoelement (6) which consists of two wires (8, 10) of different materials, which are conductively connected to one another at a first end (12) and by their second ends (13, 14) are connected to an evaluation device (18), with the first end (12) of the thermoelement (6) forming the first temperature measuring point (P1) and at least one second end (13) of the thermoelement (6) forming the second temperature measuring point (P2).

REFERENCES:
patent: 3030806 (1962-04-01), Davis
patent: 3071520 (1963-01-01), Smalling
patent: 4587843 (1986-05-01), Tokura et al.
patent: 4848147 (1989-07-01), Bailey et al.
patent: 5119674 (1992-06-01), Neilsen
Eujen, Dr. Ing. E., Messung kleiner Flussigkeitsgeschwindigkeiten nach dem Abkuhlungsprinzip, Archiv Fur Technishces Messen, v. 144-1. (translation attached), Jan. 1950.
Schald, D., Unersicht zur Thermometrie mit Thermoelementen, MSR, v. 27, pp. 306-308.

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