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 com
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).
대표청구항▼
The invention claimed is: 1. Temperature sensor with a temperature-dependent actuating device comprising a capillary tube which is filled with a gaseous or liquid medium which--in case of temperature changes along a measuring distance formed by the capillary tube--effects a pressure or volume chang
The invention claimed is: 1. Temperature sensor with a temperature-dependent actuating device comprising a capillary tube which is filled with a gaseous or liquid medium which--in case of temperature changes along a measuring distance formed by the capillary tube--effects a pressure or volume change and which comprises a path transmission element which is provided medium-tight at one end of the capillary tube and exerts a stroke movement depending on the pressure or volume in the capillary tube, and with a sensor which is designed as a Hall-effect probe and which detects, contact-free, the stroke movement of the path transmission element via a magnet arranged on the path transmission element or a section pointing toward the Hall-effect probe on the path transmission element of a magnetic material, characterized in that the path transmission element is fixed on the housing bottom, and that a printed circuit board taking up the Hall-effect probe is arranged physically separate from the path transmission element on a further housing section adjacent to or opposite the housing bottom of the housing. 2. Temperature sensor according to claim 1, characterized in that a contact surface is provided for the positioning of the printed circuit board on the housing section adjacent to or opposite the housing bottom. 3. Temperature sensor according to claim 2, characterized in that the contact surface is aligned in a defined distance to the housing bottom. 4. Temperature sensor according to claim 1, characterized in that the printed circuit board is insertable into a circumferential shoulder on the housing section adjacent to the housing bottom and closed by a gluing, locking, or screwing connection, preferably medium-tight. 5. Temperature sensor according to claim 1, characterized in that the printed circuit board is detachably fastened on a cover of a housing which is provided by a locking, screwing, clamping or welding connection on the housing section, with the printed circuit board or the cover resting against a contact surface in a defined condition. 6. Temperature sensor according to claim 1, characterized in that the printed circuit board is detachably connected on a cover and the cover is held to the housing bottom via a cylindrical wall section which is fastened on the cover and/or the housing bottom by a clamping, locking, screwing, or welding connection. 7. Temperature sensor according to claim 1, characterized in that the pressure or volume change in the capillary tube with the path transmission element is detectable by the sensor as a path dependent potential. 8. Temperature sensor according to claim 1, characterized in that the housing comprises a housing section for taking up a plug connection, with a printed circuit board being provided in the plug connection which is contactable or connected with the printed circuit board taking up the Hall-effect probe. 9. Temperature sensor according to claim 8, characterized in that the printed circuit board provided in the plug connection transforms a sensor signal into an analog, temperature-independent standard signal. 10. Temperature sensor according to claim 1, characterized in that the path transmission element and the capillary tube are firmly provided on a connecting piece which is insertable into the housing bottom. 11. Temperature sensor according to claim 10, characterized in that the path transmission element is mechanically adjustable, preferably by a thread, in the distance to the housing bottom by the connecting piece. 12. Temperature sensor according to claim 1, characterized in that the housing is shielded. 13. Temperature sensor according claim 1, characterized in that the path transmission element is designed as a diaphragm box. 14. Temperature sensor according to claim 1, characterized in that the path transmission element is designed as a bellows or siphon. 15. Temperature sensor according to claim 1, characterized in that it can be used as an antifreezing monitor.
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