Temperature sensor

Details Temperature sensor Temperature sensor

2006-08-19

2009-08-04

Assouad, Patrick J (Department: 2862)

Thermal measuring and testing

Temperature measurement

Mechanical

C374S190000, C374S202000, C374S143000

Reexamination Certificate

active

07568835

ABSTRACT:
Temperature sensor with a temperature-dependent actuating device (12) comprising a capillary tube (14) which is filled with a gaseous or liquid medium which—in case of temperature changes along a measuring distance formed by the capillary tube (14)—effects a pressure or volume change and which comprises a path transmission element (16) which is provided medium-tight at one end of the capillary tube (14) and exerts a stroke movement depending on the pressure or volume in the capillary tube (14), and with a sensor which is designed as a Hall-effect probe (27) and which detects, contact-free, the stroke movement of the path transmission element (16) via a magnet (34) arranged on the path transmission element (16) or a section pointing toward the Hall-effect probe (27) on the path transmission element (16) of a magnetic material, characterized in that the path transmission element (16) is fixed on the housing bottom (25), and that a printed circuit board (28) taking up the Hall-effect probe (27) is arranged—separate from the path transmission element (16)—on a housing section (41, 38) adjacent to or opposite the housing bottom (25) of the housing (24).

REFERENCES:
patent: 3384303 (1968-05-01), Phillips
patent: 3417919 (1968-12-01), Baumann
patent: 3945243 (1976-03-01), Ouvrard
patent: 4023397 (1977-05-01), Ouvrard
patent: 4091992 (1978-05-01), Stark
patent: 4627741 (1986-12-01), Faller
patent: 4660387 (1987-04-01), Usami
patent: 4729672 (1988-03-01), Takagi
patent: 5702592 (1997-12-01), Suri et al.
patent: 6971533 (2005-12-01), Reutter
patent: 469535 (1992-02-01), None
patent: 696727 (1996-02-01), None
patent: 0696727 (1996-02-01), None
patent: 0696727 (1996-02-01), None
patent: 2247316 (1992-02-01), None
Samson Pneumatic Transmitter for Temperature Type 812-1 (data sheet, obtained from http://www.samson.de/pdf—en/t75750en.pdf on Mar. 14, 2009).
Johnson Controls Pneumatic temperature transmitter T-5210 (data sheet, obtained from http://www.vikingcontrols.com/—documents/Product/1921595.PDF on Mar. 14, 2009).
“Temperature measurement with the hall variable capacitance temperature transducer” by George H. Hall, Full text and Abstract (obtained from IEEE Xplore Mar. 14, 2009).

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