Device for determining temperature as well as measuring arrangement for determining flow

Abstract

A device (1) for determining temperature and a measuring arrangement for determining flow that allows for a secure attachment on an object. The device has a measuring element (2) with a temperature-dependent electric resistance value. The measuring element (2) is surrounded by a thermally conductive fixing element (5) and is encompassed by a retaining bracket (6).

Claims

1. A device for determining temperature, comprising: at least one measuring element with a temperature-dependent electric resistance value, a thermally conductive fixing element at least partially surrounding the measuring element and a retaining bracket at least partially encompassing the measuring element, wherein the measuring element has at least two electric contacts and wherein each of the two contacts of the measuring element is connected to at least one electric cable and wherein an auxiliary retaining bracket essentially the same as the retaining bracket and a thermally conductive auxiliary fixing element essentially the same as the fixing element are provided and wherein the auxiliary retaining bracket and the auxiliary fixing element encompass, at least in sections, at least one of the cables connected to one of the two contacts of the measuring element.

2. The device according to claim 1, wherein the retaining bracket is at least partially made of metal.

3. The device according to claim 1, wherein the retaining bracket also at least partially encompasses the fixing element.

4. The device according to claim 1, wherein at least one of the contacts of the measuring element is connected to at least two electric cables.

5. The device according to claim 1, wherein the measuring element is arranged between the retaining bracket and an adhesive element.

6. The device according to claim 1, wherein the fixing element comprises an adhesive element.

7. The device according to claim 1, wherein at least two measuring elements having two contacts are provided, wherein each of the two contacts of the two measuring elements is connected to at least one electric cable and wherein at least one cable of one of the two measuring elements is electrically connected to at least one cable of the other of the two measuring elements.

8. The device according to claim 1, wherein the retaining bracket has two fixing surfaces.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a top view of a first variation of the device for determining temperature,

(2) FIG. 2 is a cross-section of a second variation of the device,

(3) FIG. 3 is a top view of a third variation and

(4) FIG. 4 is a top view of a part of a measuring arrangement for determining flow.

DETAILED DESCRIPTION OF THE INVENTION

(5) A device 1 for determining temperature is shown in FIG. 1. For the actual measurement, a measuring element 2 having a temperature-dependent resistance value is provided.

(6) In order to determine the resistance value, two electric contacts 3 are provided. In the shown variation, a total of three cables 4 are electrically connected to these contacts, which allow for the measurement of the resistance. One contact is connected to one cable and the other contact is connected to two cables.

(7) The measuring element 2 is embedded in a thermally conductive fixing element 5. The arrangement of fixing element 5 and measuring element 2 is, in turn, surrounded by the retaining bracket 6.

(8) Here, the retaining bracket 6 is made of a thin metal and in the shape of a strip. The strip-like retaining bracket 6 is designed in the shape of a step or terrace, wherein two fixing surfaces 7 as extensions connect to the sections of the retaining bracket 6 that are in direct contact to the fixing element 5. The fixing surfaces 7 allow for the attachment of the device 1 to a subsurface, e.g., by means of soldering or welding.

(9) In order to attach the fixing element 5 itself, the fixing element 5 is also designed as an adhesive element 8. This can be implemented in that the fixing element 5 is made of a thermally conductive adhesive.

(10) This attribute as adhesive element 8 thus complements the attachment of the device 1 to the corresponding measuring object using the retaining bracket 6.

(11) An auxiliary retaining bracket 9 and an auxiliary fixing element 10 are provided for attaching the three cables 4.

(12) Hereby, the auxiliary retaining bracket 9 is designed essentially like the retaining bracket 6 and the auxiliary fixing element 10 is designed essentially like the fixing element 5. Together, both 9, 10 are used to attach the cables 4.

(13) FIG. 2 shows a cross-section through a schematic second variation of the device 1. The retaining bracket 6 is arch-shaped, here, and ends at an adhesive element 8 with both of its fixing surfaces 7.

(14) In this design, the fixing element 5 is not designed as an adhesive element 8 as it is in the embodiment in FIG. 1, but rather the fixing element 5 rests on the adhesive element 8. This, in conjunction with the retaining bracket 6 ending on the adhesive element 8, leads to a compact and self-contained device 1.

(15) It can further be seen how the fixing element 5 fully adjoins the retaining bracket 6 on its inner side.

(16) A device 1 having two measuring elements 2 arranged consecutively is shown in FIG. 3.

(17) The two cables 4 of the front measuring element 2 are led, thereby, through the fixing element 5, which surrounds the back measuring element 2. Together, a total of four cables 4 are led through and held by the auxiliary retaining bracket 9 and the auxiliary fixing element 10.

(18) The use of two measuring elements 2 increases the measuring accuracy and allows for a mutual control of the individual results.

(19) One of the two cables 4 of one of the measuring elements 2 is connected and in electric contact to one of the two cables 4 of the other measuring element 2. This allows for a determination of the resistance of the cables 4 and for calculation using both measuring elements 2 when determining the temperature.

(20) A part of the measuring arrangement 11 for determining the flow of a medium using the Coriolis principle is shown in FIG. 4. Thenot shownflowable medium flows through two measuring tubes 12 here.

(21) A device 1 for determining temperature is attached to each measuring tube 12. As can be seen, each device 1 has only two cables 4.

(22) The two cables 4 of the device 1 located on the right side are led to the other measuring tube 12 and are brought together with the cables 4 located there.