Connecting device for connecting a sensor to a sensor receiving device
Patent Information
- Application Number
- DE202025103734
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2025-09-04
- Estimated Expiration
- 2035-07-31
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[0001] The invention relates to a connecting device for connecting a sensor to a sensor receiving device. The sensor can be, for example, a sensor for directly or indirectly measuring a temperature. The sensor can be, for example, a temperature sensor. In particular, the sensor can be a temperature sensor for measuring a fluid. The sensor can preferably be connected to a measuring device for detecting heat quantities. In particular, the sensor receiving device can be a measuring device for detecting heat quantities. The connecting device comprises a holder with a receptacle for the sensor and a fixing element for fixing the sensor in the receptacle.
[0002] In particular, the sensor mounting device can be a measuring device for measuring the amount of heat consumed, for example, in a heating or cooling system. In particular, the measuring device for heat quantity measurement can be a heat meter or a ball valve for a heat meter. Such sensor mounting devices, in particular measuring devices for heat quantity measurement, can be essential for both industrial and private use, for example, for consumption-based billing, energy consumption monitoring, cost control, process monitoring, quality assurance, and / or plant and maintenance management. Legal standards, for example, can also stipulate the use of such sensor mounting devices.
[0003] It is therefore important that such sensor recording devices operate reliably and precisely and / or are tamper-proof.
[0004] From the state of the art, for example, sensors, in particular temperature sensors, are known which are intended, for example, for measuring the temperature of liquids in pipe systems or for use in connection with heat meters.
[0005] In such heat meters, the temperature sensor is often permanently connected to a flow sensor and integrated directly into the heat meter. Replacing the temperature sensor in such cases usually requires the complete replacement of the entire heat meter. However, replacing an entire heat meter requires shut-off devices, which are provided in the piping, because the pipe must be completely opened during the meter replacement.
[0006] It is also known from the prior art to fix the temperature sensor in the sensor holder using one or more grooved pins, which ensure positive locking against axial movement. The grooved pins form an irreversible connection between the temperature sensor and the holder, meaning they cannot be removed without damage. This serves as tamper protection, as changing the installation depth—and thus the measurement accuracy—is prohibited, for example, by energy suppliers. Due to this fixed attachment, subsequent removal or modification, for example in the event of damage to the temperature sensor, is also very limited.
[0007] It is therefore an object of the invention to provide a connecting device for connecting a sensor to a sensor receiving device, which enables a non-destructive replacement of the sensor.
[0008] The problem is solved by the subject matter according to claim 1.
[0009] The invention relates to a connecting device for connecting a sensor to a sensor receiving device. In particular, the connecting device can connect a temperature sensor to the sensor receiving device. The sensor can be, for example, a thermocouple, a resistance thermometer, an NTC, a PTC, or a digital sensor.
[0010] The sensor receiving device can, in particular, be a measuring device for heat quantity measurement. In particular, the sensor receiving device can be a measuring device for heat quantity measurement, for example, for measuring the amount of heat consumed in a heating or cooling system. In particular, the measuring device for heat quantity measurement can be a heat meter.
[0011] The invention preferably comprises a holder, in particular a sleeve-shaped holder. In particular, the connecting device comprises a holder with a securing portion, a locking portion, and a groove portion formed in the axial direction between the locking portion and the securing portion.
[0012] The securing section and / or locking section can protrude from the groove section. The securing section can protrude from the groove section substantially orthogonal to the axial direction of the holder. The locking section can protrude from the groove section substantially orthogonal to the axial direction of the holder. The groove section can form a taper and / or constriction of the holder. Essentially orthogonal to the axial direction should mean, in particular, that the securing section and / or the locking section form an angle of 90° with a tolerance of 20°, in particular 10°, with an axial axis.
[0013] In particular, the securing section and / or the locking section can protrude from the groove section orthogonally to the axial direction of the holder. In particular, the securing section can have a greater extension orthogonally to the axial direction of the holder than the groove section. Alternatively or additionally, the locking section can have a greater extension orthogonally to the axial direction of the holder than the groove section. The holder can have its greatest extension orthogonally to the axial direction in the region of the securing section and / or the locking section.
[0014] The securing section and the locking section can preferably protrude the same distance from the groove section. In particular, the securing section and the locking section can protrude the same distance from the groove section orthogonally to the axial direction of the holder. In particular, the securing section and the locking section can be substantially congruent in an axial plan view of the holder. Substantially congruent is intended to express in particular that the groove section and the securing section can overlap, in particular completely overlap, in an axial plan view of the holder. In particular, the locking section and / or the securing section can protrude the same distance from the groove section in the circumferential direction of the locking section and / or the securing section essentially everywhere on the holder.
[0015] In alternative embodiments, the securing portion can, for example, protrude further from the groove portion than the locking portion. In particular, the securing portion can protrude further from the groove portion orthogonally to the axial direction of the holder than the locking portion. In alternative embodiments, the locking portion can protrude further from the groove portion than the securing portion. In particular, the locking portion can protrude further from the groove portion orthogonally to the axial direction of the holder than the securing portion.
[0016] The locking section and the securing section can extend the same distance in the axial direction. Alternatively, the locking section can have a greater extension in the axial direction than the securing section. Alternatively or additionally, the locking section can have a greater extension in the axial direction than the groove section. The securing section can have an axial extension that is smaller than the axial extension of the groove section and / or the locking section. Preferably, the locking section has a greater axial extension than the groove section and / or the securing section. In particular, the locking section can have a greater axial extension than the groove section and the groove section can have a greater axial extension than the securing section.
[0017] The securing section and the locking section can have the same or similar projection area in an axial plan view of the holder. In particular, the cross-sectional area of the securing section and the locking section of a section through the holder orthogonal to the axial direction of the holder can be the same or similar. Two surfaces are considered similar if they have the same shape with the same angles and proportions. Two surfaces are equal if they are identical. Preferably, the cross-sectional area of the securing section orthogonal to the axial direction of the holder is equal to the cross-sectional area of the locking section orthogonal to the axial direction of the holder.
[0018] For example, the securing section and / or the locking section can be circular, square, in particular rectangular, polygonal, in particular hexagonal, or elliptical in an axial plan view of the holder. In particular, the securing section and / or the locking section can form an equilateral hexagon in an axial plan view. Preferably, the securing section and / or the locking section can have the same or a similar outer contour. In particular, the securing section and / or the locking section can have a square, in particular rectangular, polygonal, in particular hexagonal, or elliptical outer contour.
[0019] Preferably, the groove section orthogonal to the axial direction of the holder has a smaller cross-sectional area than the cross-section of the securing section and / or the locking section. The cross-section of the groove section orthogonal to the axial direction of the holder can preferably be circular. In alternative embodiments, the cross-section of the groove section orthogonal to the axial direction of the holder can, for example, also be rectangular, polygonal, in particular hexagonal, or, for example, elliptical. In particular, an outer contour of the groove section can be circular. In alternative embodiments, the outer contour of the groove section can, for example, also be quadrangular, in particular rectangular, polygonal, in particular in the form of an equilateral hexagon, or elliptical.
[0020] The cross-section of the locking section orthogonal to the axial direction of the holder can be designed, in particular, to be mirror-symmetrical and / or point-symmetrical. The cross-section of the securing section orthogonal to the axial direction of the holder can be designed, in particular, to be mirror-symmetrical and / or point-symmetrical.
[0021] The securing section, the groove section, and the locking section are preferably formed coaxially with one another. In particular, a center point of the cross-sectional area of the groove section, the securing section, and / or the locking section can be formed on a central longitudinal axis of the holder.
[0022] The securing section can be formed on an axial end section of the holder. In particular, the securing section can form an axial end of the holder. The groove section can directly, in particular immediately, adjoin the securing section in the axial direction. The locking section can directly, in particular immediately, adjoin the groove section in the axial direction. In particular, the groove section can be formed directly between the securing section and the locking section.
[0023] The securing section can have a recess in an edge region, in particular in the edge region orthogonal to the axial direction. The recess can extend in the axial direction. In particular, the recess can penetrate the securing section. The recess preferably penetrates the securing section of the holder completely in the axial direction. In particular, the recess can represent a through-bore in the securing section. The recess is preferably formed in the edge region of the securing section that protrudes from the groove section orthogonal to the axial direction.
[0024] The recess is preferably positioned in the circumferential direction of the holder such that it is at a defined distance from a locking bore, in particular the opening of the locking bore, in the locking section. It is preferred if an opening of the locking bore and the recess are offset from each other by approximately 90° in the circumferential direction. Depending on the design variant, however, the angle between the recess and the locking bore can also be smaller or larger, for example, between 60° and 120°.
[0025] The holder preferably comprises a receptacle for the sensor that extends in the axial direction. The receptacle can be continuous in the axial direction. In particular, the receptacle can form a passage through the holder. The receptacle can be a recess, in particular a bore, that extends in the axial direction in the holder. The receptacle can, for example, be a through-bore that extends in the axial direction through the holder.
[0026] A cross-section of the receptacle orthogonal to the axial direction of the holder can be adapted to a cross-section of the sensor orthogonal to the axial direction of the sensor. In particular, the cross-section of the receptacle and the cross-section of the sensor can be similar. The cross-section of the receptacle orthogonal to the axial direction of the holder can be, for example, circular, elliptical, quadrangular, in particular rectangular, or polygonal.
[0027] The cross-section of the receptacle orthogonal to the axial direction of the holder can be coaxial with the cross-section of the securing portion, the groove portion, and / or the locking portion. In particular, the securing portion, the groove portion, the receptacle, and the locking portion can be coaxial with one another.
[0028] The receptacle can preferably extend in the axial direction of the holder through the securing portion, the locking portion, and the groove portion. Preferably, the receptacle extends in the axial direction from a first axial end of the holder to a second end of the holder facing away from the first axial end.
[0029] The axial receptacle can be an axial through-bore through the holder. In particular, the axial receptacle can be an axial through-bore for the sensor through the holder. The holder, in particular the receptacle, can be designed to accommodate the sensor directly or indirectly, for example, by means of a protective sleeve. In particular, the holder can accommodate the sensor directly or indirectly in the axial receptacle.
[0030] The holder can further comprise a locking bore. The locking bore can intersect or cross the receptacle. Preferably, the locking bore intersects the receptacle in the region of the locking section. The locking bore can intersect the receptacle in the axial direction in the region of the locking section. In particular, the locking bore can intersect the receptacle orthogonal to the axial direction of the holder. The locking bore can have its maximum extent in a direction orthogonal to the axial direction of the holder.
[0031] The locking bore can, for example, be a blind hole or a through-bore through the holder. In particular, the locking bore can be formed in the region of the locking section. Preferably, the locking bore is formed in a section of the locking section axially facing the securing section. Preferably, the locking bore is formed in an end section of the locking section axially facing the securing section. In particular, the locking bore can protrude into the locking section or penetrate it. In particular, the locking bore can penetrate the locking section entirely. Preferably, the locking bore can penetrate the locking section orthogonally to the axial direction of the holder.
[0032] The term "bore" should not be understood in a restrictive sense. The locking bore can, for example, be produced with the holder using a primary forming process. Alternatively, the locking bore can be machined into the holder, for example.
[0033] The locking bore can be a first locking bore, and the holder can comprise a second locking bore. The second locking bore can intersect or cross the receptacle. In particular, the second locking bore can intersect or cross the first locking bore in an axial plan view of the holder. In particular, the second locking bore can orthogonally intersect the first locking bore. The second locking bore can be formed above or below the first locking bore in the axial direction. Preferably, the second locking bore can be formed at the same height as the first locking bore in the axial direction.
[0034] Preferably, the second locking bore intersects the receptacle in the region of the locking section. The second locking bore can intersect the receptacle in the axial direction in the region of the locking section. In particular, the second locking bore can intersect the receptacle orthogonal to the axial direction of the holder. The second locking bore can have its maximum extent in a direction orthogonal to the axial direction of the holder.
[0035] The second locking bore can, for example, be a blind hole or a through-bore through the holder. In particular, the second locking bore can be formed in the region of the locking section. Preferably, the second locking bore is formed in a section of the locking section axially facing the securing section. In particular, the second locking bore can protrude into the locking section or penetrate it. In particular, the second locking bore can penetrate the locking section entirely. Preferably, the second locking bore can penetrate the locking section orthogonally to the axial direction of the holder.
[0036] The holder may comprise a connecting structure on an outer peripheral surface for connecting the holder to the sensor receiving device. In particular, the connecting structure may be designed for a positive and / or non-positive connection of the holder to the sensor receiving device.
[0037] The connecting structure can be, for example, an external thread. The connecting structure, in particular the external thread, can be designed to connect the connecting structure in a force-fitting and / or form-fitting manner once the connection between the holder and the sensor receiving device has been established. The connecting structure can be, for example, an external thread, which can be connected in a force-fitting and / or form-fitting manner to an internal thread formed in the sensor receiving device.
[0038] The connecting structure can be formed in the axial direction on a side of the locking section facing away from the securing section. In particular, the connecting structure can adjoin the locking section in the axial direction. In particular, the connecting structure can directly adjoin the locking section in the axial direction.
[0039] The holder can comprise an actuating structure that can be actuated manually and / or by a tool. The actuating structure can be formed by the locking section and / or the securing section. The actuating structure can be formed, for example, by an external hexagon. The actuating structure is preferably designed to introduce a force into the holder for the non-positive and / or positive connection of the holder to the sensor receiving device. The actuating structure can be formed on a first axial end section of the holder.
[0040] The holder can comprise a seal at an end facing away from the securing section in the axial direction. The seal can be formed on a second axial end section of the holder that is axially remote from the first axial end section. The seal can, in particular, be formed on an end section of the holder that is axially remote. The seal can, in particular, be designed to receive the holder in the sensor receiving device in a fluid-tight manner.
[0041] The holder is preferably made of a metal, particularly brass. In alternative designs, the holder can also be made of a plastic. The holder can be manufactured using a primary forming process. Alternatively, it can also be manufactured using a machining process. The holder can also be manufactured using a combination of a primary forming process and a machining process. For example, a blank of the holder can be manufactured using primary forming and then machined.
[0042] The holder is preferably designed as a one-piece component. This means that the holder can consist of a single, continuous base body and does not have a multi-part or composite structure. The base body represents all functional areas of the holder in an integral design. In particular, the holder can comprise the securing section, the groove section, the locking section and the connecting structure, if present, as firmly connected sections. The individual sections can be inseparably integrated into the holder. The sections are preferably not manufactured separately or joined subsequently, but rather are manufactured together as part of a primary forming process (such as casting, injection molding or pressing) or are machined together from a workpiece in a machining process.
[0043] Disassembling or separating the sections is preferably impossible without irreversibly destroying the holder. The sections are preferably not separable from each other without causing damage. This results in a particularly stable and durable structure that guarantees both high mechanical strength and tamper-proofness. The integral connection of the aforementioned sections ensures that no joining or connecting elements such as screws, rivets, or adhesives are required, thus avoiding potential weak points in the design.
[0044] The connecting device further comprises a fixing element. The fixing element can be connected to the holder. The fixing element preferably serves to fix the sensor in the receptacle. In particular, the fixing element serves to axially fix the sensor in the receptacle. The fixing element can fix or lock the sensor, in particular, in its axial position within the holder. The fixing element preferably comprises a fastening section, a transition section, and a fixing section protruding from the transition section.
[0045] The fixing element is preferably a cut-form part or a stamped part. In particular, the fixing element is a plate-shaped cut-form part. In particular, the fixing element can be produced using a stamping process. In particular, the fixing element can be made from a sheet metal, in particular plastic or metal sheet. The fixing element can in particular be a sheet metal part.
[0046] The fixing element can be cut from a sheet metal using a cutting process, for example, a laser cutting process or a punching process. In particular, the fixing element can be cut from a plastic or metal sheet. Preferably, the fixing element is made of metal. In particular, the fixing element can be made of stainless steel, for example.
[0047] Manufacturing the fixing element as a cut part, for example, by punching or laser cutting, from sheet metal has the advantage of enabling fast, automated, and cost-effective production. This is particularly suitable for large batch sizes. Furthermore, production can be carried out in a material- and time-efficient manner with minimal waste. This type of manufacturing also offers high dimensional and shape accuracy.
[0048] By using high-quality sheet metal (e.g., stainless steel), high mechanical stability can be achieved despite a low material thickness. This allows for a space-saving design with high holding force and resistance to deformation. The use of materials such as stainless steel can also make the fixing element resistant to corrosion, which is advantageous for applications in humid or aggressive environments. The use of stainless steel can also meet hygienic, chemical, and / or mechanical requirements that apply, for example, in the food or pharmaceutical industries.
[0049] The fixing section is preferably designed to protrude into the locking bore of the holder when the connection between the holder and the fixing element is established. In particular, the fixing element is designed to protrude into the locking bore when the connection between the sensor and the holder is established in order to fix the sensor in the receptacle in the axial direction.
[0050] In particular, the fixing section can have a cross-sectional area whose largest extent is adapted to the diameter of the locking bore. The cross-sectional area is preferably formed perpendicular to an upper side of the fixing element. In particular, the fixing section, in a section perpendicular to the upper side of the fixing element, has a cross-sectional area whose largest extent is adapted to the diameter of the locking bore. The largest extent of the cross-sectional area and the diameter of the locking bore can form a clearance fit or a transition fit. In particular, the diameter of the locking bore can be larger than the largest extent of the cross-sectional area of the fixing section.
[0051] The cross-sectional area of the fixing section can, for example, be quadrangular, in particular rectangular, or in particular square. If the cross-sectional area of the fixing section is rectangular, in particular square, the largest diagonal of the cross-sectional area is preferably smaller than a diameter of the locking bore.
[0052] The fixing section can protrude from the transition section. In particular, the fixing section can protrude from the transition section at an end of the transition section facing away from the fastening section. The fixing section can be rod-shaped. In particular, the fixing section of the fixing element can have an elongated extension. This means that the fixing section extends perpendicular to its cross-sectional area, preferably further than the greatest extension of the cross-sectional area.
[0053] The fixing section can protrude from the transition section. In particular, the fixing section can protrude perpendicularly from the transition section. In particular, the fixing section and the transition section can form an angle of 90° with a tolerance of 20°, in particular a tolerance of 10°, in a plan view of the fixing element.
[0054] The transition section preferably connects the fastening section to the fixing section. The transition section can have a rectilinear inner contour. The inner contour of the transition section is preferably designed to form an operative connection with a tool. In particular, the inner contour of the transition section can be designed to form an operative connection with a slotted screwdriver. In particular, the inner contour of the transition section can be designed to form an operative connection with the tool in order to release the fixing element from the holder once the connection has been established.
[0055] The inner contour can make it possible, when a connection exists between the fixing element and the holder, to apply the tool to release the fixing element from the connection, in particular to pry it out. In particular, when the connection between the fixing element and the holder has been established, the tool can be applied to the inner contour of the transition section to release the fixing element from the connection. In particular, the fixing element can be pried out of the connection.
[0056] The transition section, in particular the inner contour of the transition section, can at least partially abut an outer contour of the holder when the fixing element is connected to the holder. The transition section, in particular the inner contour of the transition section, can at least partially abut the outer contour of the locking section when the fixing element is connected.
[0057] In the connected state, the fixing element can at least partially surround the holder in an axial plan view of the holder. In particular, the fastening section can at least partially surround the holder in an axial plan view. In the connected state, the fixing element, in particular the fastening section, can surround at least one-quarter of the holder in an axial plan view of the holder.
[0058] The inner contour of the fastening section is preferably adapted to the outer contour of the groove section. In particular, the inner contour of the fastening section can at least partially follow the outer contour of the groove section when the connection between the fixing element and the holder is established. The fastening section can at least partially surround the groove section when the connection is established.
[0059] When connected to the holder, the fixing element can at least partially abut both the outer contour of the groove section and the outer contour of the locking section. In particular, the inner contour of the transition section can at least partially abut the outer contour of the locking section, and the inner contour of the fastening section can at least partially abut the outer contour of the groove section.
[0060] In particular, the inner contour of the transition section can come into contact with the outer contour of the locking section along a contact line. In particular, the transition section and the locking section can be in contact with each other when the connection is established. In particular, the inner contour of the fastening section can come into contact with the outer contour of the groove section along a contact line.
[0061] In particular, the fastening section and the groove section can be in contact with each other when the connection is established.
[0062] The fastening section can have a circular arc-shaped inner contour. The inner contour of the fastening section can span an angle greater than 30°, in particular greater than 45°. In particular, the circular arc of the inner contour of the fastening section can span an angle greater than 30°, in particular greater than 45°.
[0063] The inner contour of the fastening section can comprise a locking lug at an end facing away from the transition section. The locking lug can be formed, for example, by changing the radius of the circular arc. In particular, the radius of the circular arc in the area of the locking lug can be smaller than the circular arc of the remaining inner contour. The radius of the inner contour can change, for example, continuously or discontinuously in the area of the locking lug. The locking lug can, in particular, project forward from the fastening section toward the center of the inner contour.
[0064] The locking lug is preferably designed to engage behind the groove section of the holder when the connection is established. In particular, the locking lug can form a type of locking connection with the groove section.
[0065] The fixing element can be substantially U-shaped in a plan view of a top side of the fixing element. In particular, the fixing section and the fastening section can each form one leg of the U. "Substantially U-shaped" should be understood to mean that the fixing section and the fastening section protrude from the transition section substantially in the same direction, so that the fixing section and the fastening section form two legs that are connected to one another via the transition section. In particular, the fixing element can form an open, three-armed structure that substantially resembles the basic shape of the letter U.
[0066] The fixing element can preferably be detachably connected to the holder in a non-destructive manner. In particular, the holder and the fixing element can be detached without damaging, in particular destroying, the holder and / or the fixing element. In particular, the fixing element can be connected to the holder by means of the fixing section and the fastening section. In particular, once the connection is established, the fixing section can protrude into the locking bore of the holder, and the fastening section can at least partially surround the groove section.
[0067] The transition section can serve as a handle, allowing an installer or user to hold or grasp the fixing element to establish and / or release the connection between the holder and the fixing element. The transition section serves a dual function: Firstly, it forms a structural link between the fixing section and the fastening section, and secondly, it enables the user to precisely manipulate the component during assembly or disassembly. Its position and dimensions provide sufficient space to securely grip, guide, and position the fixing element.
[0068] The fixing element can form a detachable connection with the holder in order to connect the sensor to the holder, in particular to the sensor receiving device. In particular, the connecting device can comprise the holder, wherein the holder is configured to receive the sensor. In particular, the sensor can be connected to the sensor receiving device via the holder.
[0069] The sensor is preferably a rotating body. The sensor can be a rotating body with at least one circumferential groove. The circumferential groove can extend at least partially around the circumference of the sensor. Preferably, the circumferential groove can extend at least 180° around the circumference of the sensor; in particular, the circumferential groove can extend at least 270° around the circumference of the sensor. Preferably, the circumferential groove extends over the entire circumference of the sensor. This means that the circumferential groove preferably extends over 360° of the circumference. In particular, the circumferential groove can be an annular groove.
[0070] The axial extent of the circumferential groove is preferably adapted to the greatest extent of the fixing section of the fixing element. In particular, the circumferential groove can have an axial extent that is greater than the greatest extent of the cross-section of the fixing section of the fixing element. The circumferential groove can in particular be designed such that the fixing section of the fixing element enters into an operative connection with the circumferential groove when the connection between the holder and the fixing element is established. In particular, the fixing section can be tangent to the sensor when the connection is established, so that the fixing section is at least partially received in the circumferential groove. The fixing section can be tangent to the sensor in particular in the region of the circumferential groove.
[0071] The sensor can comprise a plurality of circumferential grooves in the axial direction. Each of the circumferential grooves can extend entirely or partially over the circumference of the sensor. The circumferential grooves can be of identical design or, for example, differ from one another in their circumferential extent. In particular, the sensor can comprise at least two, in particular at least three, circumferential grooves. If the sensor comprises a plurality of circumferential grooves, the circumferential grooves can be spaced apart from one another in the axial direction of the sensor. Preferably, the circumferential grooves are evenly spaced from one another in the axial direction of the sensor. In alternative embodiments, the axial distances between the circumferential grooves can vary.
[0072] The circumferential groove can be formed in the axial direction of the sensor in a first, in particular upper, half of the sensor. If the sensor comprises several circumferential grooves, all circumferential grooves can be formed in the first, in particular upper, half of the sensor. The first, in particular upper, half of the sensor is to be understood as a half of the sensor facing away from a sensor tip. The sensor tip is to be understood as an axial end of the sensor. In particular, the sensor tip is to be understood as an active measuring axial end of the sensor. In particular, the sensor tip can serve for the primary detection of the measured variable, for example the temperature.
[0073] The sensor can have an axial extension that is greater than the axial extension of the holder. Preferably, when accommodated in the holder's receptacle, the sensor can extend through the holder in the axial direction. In particular, the sensor can protrude from the holder with the sensor tip in the axial direction.
[0074] The sensor, in particular the sensor tip, can preferably protrude from the holder in the axial direction far enough that the sensor, in particular the sensor tip, protrudes at least partially into the sensor receptacle when the connection between the holder and the sensor receptacle is established. The sensor, in particular its sensor tip, can, for example, protrude from the holder far enough that the sensor tip protrudes into a pipe section of the sensor receptacle when the connection between the holder and the sensor receptacle is established. The sensor, in particular the sensor tip, can preferably protrude into the sensor receptacle up to a center point of a cross-section of a pipe section when the connection is established.
[0075] If the sensor comprises several, in particular more than three, circumferential grooves, the axial position of the sensor can be adjusted using the circumferential grooves. Thus, the sensor can protrude further from the holder in the axial direction if the fixing section interacts with a circumferential groove that is furthest away from the sensor tip in the axial direction. If the fixing section interacts, for example, with a circumferential groove of the sensor that is closer to the sensor tip in the axial direction, the sensor preferably does not protrude as far from the holder.
[0076] The sensor may in particular be a temperature sensor, in particular a thermocouple, a resistance thermometer, an NTC, a PTC or a digital sensor.
[0077] The sensor may include a cable for connection to a measuring instrument at one end located in the axial direction. Preferably, the cable may be connected to the sensor at an end facing away from the sensor tip in the axial direction.
[0078] When the connection is established, in particular when the connection is established between the fixing element and the holder, the fixing element can protrude with its fixing section into or through the locking bore. Preferably, when the connection is established, the fixing element's fixing section protrudes into or through the locking bore so far that the fastening section at least partially surrounds the groove section. In particular, when the connection is established, the fixing element's fixing section can protrude into or through the locking bore so far that the fastening section, in particular the inner contour of the fastening section, touches the outer contour of the groove section.
[0079] In particular, once the connection is established, the fixing element can protrude with its fixing section into or through the locking bore until the fastening section, in particular the inner contour of the fastening section, at least partially abuts the outer contour of the groove section. In particular, the fixing section can only protrude into or through the locking bore until the fastening section, in particular the inner contour of the fastening section, comes into contact with the groove section.
[0080] When the connection between the fixing element and the holder is established, the fixing section can protrude into or through the receptacle. The fixing section can protrude into or through the receptacle orthogonally to the axial direction. In particular, when the connection between the fixing element and the holder is established, the fixing section can form a secant of the receptacle in an axial plan view of the receptacle. In particular, when the connection is established, the fixing section can intersect the receptacle, preferably orthogonally to the axial direction of the receptacle.
[0081] The fixing element can be pivoted when the connection is established. The fixing element can be pivotable when the connection is established between the holder and the fixing element. In particular, the fixing element can be pivoted such that the fixing element forms an angle with a cutting plane that intersects the holder orthogonally to an axial axis of the holder. In the connected state, the fixing element can be pivoted such that an end face, in particular the end face along its main geometric extent, is aligned at an angle to the cutting surface.
[0082] In particular, the fixing element can be pivoted about the fixing section in the connected state. In particular, when the connection between the fixing element and the holder is established, the fixing element can be pivoted such that, in a lateral plan view of the holder, the fixing element, in particular the fastening section, at least partially spans the groove section of the holder in the axial direction. In particular, the fixing element can be pivoted such that the fastening section spans the holder in the axial direction from the locking section to the securing section.
[0083] When the connection between the holder and the fixing element is established, the fixing element can be pivoted such that the fixing element, in particular the fastening section of the fixing element, touches the securing section. The fixing element, in particular the fastening section, can touch the securing section on an end face facing the locking section. When the connection is established, the fixing element and the securing section can be in contact with one another along a contact line. In particular, the fixing element, in the connected state, can be brought into contact with the securing section along the contact line. The contact line can be a straight or curved line. In alternative embodiments, the fixing element and the securing section can be in point-like contact with one another.
[0084] The recess in the securing section can be a first recess. The fastening section of the fixing element can comprise a recess, in particular a second recess. The second recess is preferably formed in an edge region of the fastening section. In particular, the second recess can be formed in the end of the fastening section facing away from the transition section. In particular, the second recess can be formed adjacent to the locking lug. If the fixing element is U-shaped, the second recess can be formed in the region of the opening U in the fastening section. The second recess preferably penetrates the fixing element, in particular the fastening section, completely. In particular, the second recess penetrates the fixing element orthogonal to an end face.
[0085] The connecting device can comprise a seal that serves as a tamper-proof device. The seal is preferably designed such that, when the connecting device is in the assembled state, it penetrates both the first and the second recess. The first recess can be formed in the fixing element and the second recess in the holder. By passing the seal through both recesses, the fixing element can be secured in its assembled position relative to the holder. Unauthorized or unintentional detachment of the fixing element from the holder is thereby effectively prevented or at least made immediately visually detectable, since the seal must be destroyed or removed if an attempt is made to detach it. The seal can thus serve as a tamper-proof element and can, in particular, represent a seal in accordance with the requirements of energy suppliers or calibration authorities.
[0086] When the connection between the fixing element and the holder is established, the first recess of the securing portion preferably overlaps with the second recess of the fastening portion in an axial plan view of the holder. The first and second recesses are preferably arranged relative to one another in such a way that the seal can be passed through both recesses and fastened. This secures the fixing element in its mounting position relative to the holder.
[0087] Once the connection is established, the sensor can protrude into the holder's receptacle or completely penetrate it. Preferably, the sensor protrudes far enough into the holder's receptacle that a circumferential groove of the sensor axially overlaps the locking hole in the holder. In this state, the fixing element can protrude into the locking hole with its fixing section or penetrate it.
[0088] Preferably, the sensor is positioned in its mounted position such that the fixing section can protrude into the overlapping circumferential groove and touch or tangentially engage the sensor in this area. In particular, the fixing section can interact positively with the circumferential groove of the sensor, thereby achieving reliable axial fixation of the sensor in the receptacle and preventing unintentional displacement.
[0089] The invention is explained using the embodiment of Fig. 1-5. Features disclosed in the figures can advantageously further develop the invention. They show: Fig. 1a isometric view of the holder with sensor and fixing element, Fig. 1b enlarged view of the holder and the fixing element from Fig. 1a; Fig. 2 isometric view of the fixing element; Fig. 3a Side view of the holder with sensor and connected fixing element Fig. 3b Enlargement of the holder and the fixing element from Fig. 3a; Fig. 4 Side view of the sensor; Fig. 5a Side view of the sensor mounting device with holder and sensor; Fig. 5b Side view of the sensor mounting device offset by 90° from Fig. 5a; Fig. 5c Magnification of the Fig. 5b.
[0090] The Fig. 1-5 show an embodiment of the invention. The invention will be described in more detail below with reference to the figures. Fig. 1a and Fig. 1b show the holder 10 of the connecting device with a sensor 30. The sensor 30 projects into a receptacle 13 of the holder 10. In particular, as for example at the Fig. 1a, the sensor 30 extends through the holder 10 in the axial direction. The sensor 30 protrudes from the holder 10 in the axial direction. In the views of Fig. 1a and Fig. 1b, the fixing element 20 is detached from the holder 10.
[0091] The holder 10 comprises the receptacle 13 for receiving the sensor 30. The receptacle 13 penetrates the holder 10 completely in the axial direction. In particular, the receptacle 13 forms a through-bore through the holder 10. The receptacle 13 is configured to receive the sensor 30 in the holder 10. The cross-section of the receptacle 13 orthogonal to the axial direction of the holder 10 is adapted to the cross-section of the sensor 30 orthogonal to the axial direction of the sensor 30. The sensor 30 and the receptacle 13 can form a clearance fit or transition fit, wherein the receptacle 13 has a larger diameter than the sensor 30.
[0092] The holder 10 further comprises a securing section 11, a groove section 12, and a locking section 15. The securing section 11, the groove section 12, and the locking section 15 are formed directly one behind the other in the axial direction. The groove section 12 is formed between the securing section 11 and the locking section 15 in the axial direction. The securing section 11 forms one axial end of the holder 10.
[0093] The securing portion 11 and the locking portion 15 protrude from the groove portion 12. In particular, the securing portion 11 and the locking portion 15 protrude from the groove portion 12 orthogonal to the axial direction of the holder 10. As also shown, for example, in the Fig. As can be seen in Figure 3b, the securing section 11 and the locking section 15 protrude equidistant from the groove section 12 orthogonally to the axial direction of the holder. The groove section 12 represents a taper and / or constriction of the holder 10. The holder 10 has its greatest extension orthogonal to the axial direction in the region of the securing section 11 and the locking section 15.
[0094] In alternative embodiments, the securing portion 11 can protrude further from the groove portion 12 orthogonally to the axial direction than the locking portion 15. In a further alternative embodiment, the locking portion 15 can protrude further from the groove portion 12 orthogonally to the axial direction of the holder 10 than the securing portion 11.
[0095] The securing section 11 and the locking section 15 each form an external hexagon. In particular, the securing section 11 and the locking section 15 form an equilateral external hexagon. In the exemplary embodiment, the securing section 11 and the locking section 15 form an actuating structure which is designed to rotate the holder 10 by means of a tool and / or manually, so that the holder 10 can be rotated with the Fig. 5a, Fig. 5b and Fig. 5c. In particular, the actuating structure is designed in the form of an external hexagon so that it can be actuated, for example, using an open-end and / or ring wrench.
[0096] The securing section 11 of the fixing element 20 has a recess 16, in particular a first recess 16, in an edge region, in particular in the edge region orthogonal to the axial direction. The recess 16 extends in the axial direction through the securing section 11. In particular, the recess 16 penetrates the securing section 11. The recess 16 is formed in the edge region of the securing section 11 that protrudes from the groove section 12 orthogonally to the axial direction.
[0097] A locking bore 17 is formed in the locking section 15. The locking bore 17 can completely penetrate the locking section 15 orthogonally to the axial direction of the holder 10. In alternative embodiments, the locking bore 17 can, for example, only extend into the locking section 15 far enough to intersect the receptacle 13, i.e., the locking bore 17 can penetrate the material of the locking section far enough to form an opening in the receptacle 13.
[0098] The holder 10 further comprises a connecting structure 14 for positively and / or non-positively connecting the holder 10 to the sensor receiving device 40. The connecting structure 14 can, for example, be an external thread that can be non-positively and / or positively connected to an internal thread formed in the sensor receiving device. In particular, the holder 10 can be configured to be screwed into the sensor receiving device 40.
[0099] In the illustrated embodiment, the holder 10 comprises a seal 18. The seal 18 is formed at an end of the holder 10 axially remote from the securing portion 11. The seal 18 is designed to accommodate the holder 10 in a fluid-tight manner in the sensor receiving device 40. In particular, the seal 18 can prevent, for example, fluid that can flow through a pipe in the sensor receiving device 40 from escaping from the sensor receiving device 40 in the region of the holder 10.
[0100] In the Fig. 1a and Fig. 1b, the fixing element 20 is shown in a non-assembled state. Fig. 3a and Fig. 3b shows the fixing element in its assembled state. In the following, the fixing element 20 will be described with reference to Fig. 2 will be described in more detail.
[0101] The fixing element 20 comprises a fixing section 27, a transition section 24, and a fastening section 22. The fixing element 20 is a plate-shaped, cut-to-size part. In particular, the fixing element can be manufactured using a punching or laser cutting process.
[0102] The fastening section 22 protrudes from the transition section 24. The fixing section 27 protrudes from the transition section 24. The fixing element 20 is essentially U-shaped in a plan view, so that the fastening section 22 and the fixing section 27 each form one leg of the U-shape.
[0103] The fixing section 27 is designed to protrude into the locking bore 17 of the holder 10. In particular, the fixing element 20 with the fixing section 27 can protrude into the locking bore 17 when the connection between the fixing element 20 and the holder 10 is established in order to fix the sensor 30 in the axial direction in the receptacle 13.
[0104] The fixing section 27 has a cross-sectional area whose largest extent is adapted to the diameter of the locking bore 17. The cross-sectional area is formed perpendicular to the upper side of the fixing element 20. The largest extent of the fixing section 27 is smaller than the diameter of the locking bore 17.
[0105] In the illustrated embodiment, the fixing section 27 has a rectangular, in particular square, cross-sectional area. The diagonal of the cross-sectional area of the fixing section 27 is smaller than the diameter of the locking bore 17. In this way, the fixing element 20 can be inserted into the locking bore 17.
[0106] In the present embodiment, the fixing section 27 is rod-shaped and / or pin-shaped. This means that the fixing section 27 has an elongated extension that is greater than the largest extension of the cross-sectional area of the fixing section 27.
[0107] Preferably, the fixing section 27 has a length that is at least one-third of the greatest extent of the locking section 15 orthogonal to the axial direction. Preferably, the fixing section 27 has a length that is at least half as long as the greatest extent of the locking section 15 orthogonal to the axial direction. In particularly preferred embodiments, the length of the fixing section 27 corresponds approximately to the length of the greatest extent of the locking section 15 or is longer than the greatest extent of the locking section 15 orthogonal to the axial direction.
[0108] The fixing section 27 projects vertically from the transition section 24. As can be seen from the Fig. 2, the fixing section 27 and the transition section 24 form a right angle. The fastening section 22 protrudes perpendicularly from the transition section 24. As can be seen from the Fig. As can be seen in Figure 2, the fastening section 22 and the transition section 24 also form a right angle in the area of their connection.
[0109] The transition section 24 connects the fixing section 27 to the fastening section 22. The transition section 24 has a straight inner contour 25. The inner contour 25 of the transition section 24 is designed to engage with a tool, for example, a flat-head screwdriver. In particular, a tool can engage the inner contour 25 in the assembled state of the fixing element 20 in order to move the fixing element 20 from the assembled position to a non-assembled position.
[0110] The fastening section 22 has a second recess 26 at one end. The recess 26 is formed at the end of the fastening section 22 facing away from the transition section. The recess 26 is in the form of a through-bore and / or a hole in the fastening section 22. In particular, the recess 26 penetrates the material of the fastening section 22.
[0111] When the connection between the fixing element 20 and the holder 10 is established, the first recess 16 of the securing section 11 overlaps with the second recess 26 of the fastening section 22 in an axial plan view of the holder 10. The first and second recesses 16, 26 are, as the Fig. 1b, are arranged relative to one another in such a way that a seal (not shown in detail) can be passed through both recesses 16, 26 and secured. This allows the fixing element 20 to be secured in its mounting position relative to the holder 10.
[0112] The connecting device serves to connect the sensor 30 to the sensor receiving device 40. The sensor receiving device 40 can be, for example, a measuring device for heat quantity measurement. In particular, the sensor receiving device can be, for example, a ball valve for a heat meter. Such a ball valve is, for example, shown in the Fig. 5a to 5c.
[0113] The sensor 30 can, for example, be as in Fig. 4, the sensor 30 can be a rotating body. The sensor 30 can be, for example, a thermocouple, resistance thermometer, NTC, PTC, or a digital sensor. The sensor 30 has a cable 32 at one end located in the axial direction for connection to a measuring instrument. The cable 32 is connected to the sensor 30 at the end of a sensor tip 34 facing away from the axial direction.
[0114] The sensor 30 may comprise one or more circumferential grooves 37. According to the present embodiment of the Fig. 1 to 5, the sensor 30 comprises a total of four circumferential grooves 37. The circumferential grooves 37 are spaced apart from one another in the axial direction. In the present exemplary embodiment, the circumferential grooves 37 have constant spacing from one another in the axial direction. In alternative embodiments, the sensor 30 can also comprise fewer or more than four circumferential grooves 37. The spacing between the individual circumferential grooves 37 can also vary in the axial direction.
[0115] In the exemplary embodiment, the circumferential grooves 37 extend 360° in the circumferential direction of the sensor 30. Alternatively, the circumferential grooves could also extend only partially over the circumference of the sensor 30.
[0116] The sensor 30 has the sensor tip 34, which protrudes in the axial direction from the holder 10. The sensor 30 protrudes so far into the receptacle 13 of the holder 10 that a circumferential groove 37 of the sensor 30 overlaps in the axial direction with the locking bore 17 in the holder 10. This means that the locking bore 17 and the circumferential groove 37 are arranged at the same height in the axial direction of the holder 10. In this way, the fixing section 27 can enter into an operative connection with the circumferential groove 37 once the connection has been established between the sensor 30, the holder 10 and the fixing element 20. In this way, the sensor 30 can be fixed in the axial direction. The sealing can additionally ensure that the sensor 30, in particular its position, is not tampered with.
[0117] The circumferential grooves 37 in combination with the fixing element 20 can be used to adjust how far the sensor 30, in particular the sensor tip 34, protrudes from the holder 10 in the axial direction. As shown, for example, in the Fig. 3b or the Fig. As can be seen in Figure 5c, the fixing element 2 in the exemplary embodiment engages in the third circumferential groove 37, counted from the sensor tip 34. If the fixing element 20, in particular the fixing section 27, were to cooperate, for example, with the second circumferential groove 37, counted from the sensor tip 34, the sensor 30, in particular the sensor tip 34, would protrude less far in the axial direction from the holder 10.
[0118] Preferably, the sensor 30 is positioned in the holder 10 such that its sensor tip 34 is positioned in the axial direction approximately centrally of a pipe section of the sensor receiving device 40 when the holder 10 is connected to the sensor receiving device 40. The sensor 30, in particular the sensor tip 34, can, when the connection is established, preferably protrude into the sensor receiving device 40 up to a center point of a cross section of the pipe section, as is the case, for example, in Fig. 5a is shown.
Claims
[1] Connecting device for connecting a sensor (30), in particular a temperature sensor, to a sensor receiving device (40), in particular a measuring device for heat quantity detection, comprising: 1.
1. a sleeve-shaped holder (10) with i. a security section (11), ii. a locking section (15), iii. a groove section (12) formed in the axial direction between the locking section (15) and the securing section (11), iv. an axial, preferably continuous, receptacle (13) for the sensor (30), v. a locking bore (17) in the locking section (15) intersecting the receptacle (13), 1.
2. a fixing element (20) connectable to the holder (10) for axially fixing the sensor (30) in the receptacle (13), 1.
3. wherein the fixing element (20) is a plate-shaped cutting molded part with a fastening section (22), a transition section (24) and a fixing section (27) projecting from the transition section (24), 1.
4. the fixing section (27) is designed to protrude into the locking bore (17) of the holder (10) when the connection is established, and wherein 1.
5. an inner contour of the fastening section (22) is adapted to an outer contour of the groove section (12). [2] Device according to the preceding claim, wherein 2.
1. the fixing element (20) projects with its fixing section (27) into or through the locking bore (17) when the connection is established, and wherein 2.
2. the fastening section (22) at least partially surrounds the groove section (12) when the connection is established. [3] Device according to one of the preceding claims, wherein the fixing element (20) is pivoted when the connection is established, so that the fixing section (27) forms the pivot axis and the fixing element (20) spans the groove section (12) in the axial direction in a lateral plan view of the device. [4] Device according to the preceding claim, wherein the fixing element (20) is pivoted so far when the connection is established that the fastening section (22) touches the securing section (11). [5] Device according to one of the preceding claims, wherein 5.
1. the fixing element (20) projects with its fixing section (27) into or through the locking bore (17) when the connection is established, and wherein 5.
2. the inner contour (23) of the fastening section (22) at least partially abuts the outer contour of the groove section (12) when the connection is established. [6] Device according to the preceding claim, wherein 6.
1. the fastening section (22) engages behind the groove section (12) with a locking lug (21) when the connection is established. [7] Device according to one of the preceding claims, wherein the fixing element (20) in an axial plan view of the holder (10) surrounds at least one quarter of the holder (10) when the connection is established. [8] Device according to one of the preceding claims, wherein 8.
1. the fixing element (20) projects with its fixing section (27) into or through the locking bore (17) when the connection is established, 8.
2. an inner contour (25) of the transition section (24) at least partially abuts an outer contour of the locking section (15), and wherein 8.
3. the inner contour (23) of the fastening section (22) at least partially abuts the outer contour of the groove section (12). [9] Device according to one of the preceding claims, wherein 9.
1. the sensor (30) projects into or through the receptacle (13) of the holder (10) when the connection is established, 9.
2. the fixing element (20) with its fixing section (27) projects into or through the locking bore (17), and wherein 9.
3. the fixing section (27) cooperates with a corresponding circumferential groove (37) or notch of the sensor (30) and positively secures the sensor (30) against axial displacement. [10] Device according to one of the preceding claims, wherein the securing section (11) has in its edge region a first recess (16) extending in the axial direction, which, when the connection is established, overlaps with a second recess (26) in the fastening section (22) in an axial plan view of the securing section (11) for the application of a seal. [11] Device according to the preceding claim, wherein the device comprises a seal which, when the connection is established, extends through the first recess (16) and second recess (26) in order to prevent or indicate unauthorized detachment of the fixing element (20) from the holder (10). [12] Device according to one of the preceding claims, wherein the securing portion (11) and / or the locking portion (15) protrudes / protrudes from the groove portion (12) orthogonally to the axial direction of the holder (10). [13] Device according to one of the preceding claims, wherein the securing portion (11) and the locking portion (15) protrude equidistant from the groove portion (12) orthogonally to the axial direction of the holder (10) and the securing portion (11) and the locking portion (15) are substantially congruent in an axial plan view of the holder (10). [14] Device according to one of the preceding claims, wherein a cross section of the groove section (12) orthogonal to the axial direction of the holder (10) has a smaller cross-sectional area than a cross section of the securing section (11) and / or the fixer section (15). [15] Device according to one of the preceding claims, wherein a cross section of the groove portion (12) orthogonal to the axial direction of the holder (10) is circular. [16] Device according to one of the preceding claims, wherein the outer contour of the groove portion (12) is circular. [17] Device according to one of the preceding claims, wherein the securing portion (11), the groove portion (12), the receptacle (13) and the locking portion (15) are coaxial with each other. [18] Device according to one of the preceding claims, wherein the securing portion (11) is formed on an axial end portion of the holder (10), in particular forms the axial end of the holder (10). [19] Device according to one of the preceding claims, wherein the locking bore (17) intersects the receptacle (13) orthogonally to the axial direction of the holder (10). [20] Device according to one of the preceding claims, wherein the locking bore (17) is a blind hole or a through hole which penetrates the locking section (15). [21] Device according to one of the preceding claims, wherein the holder (10) comprises a connecting structure (14) on an outer peripheral surface of the holder (10) for the positive and / or non-positive connection of the holder (10) to the sensor receiving device (40). [22] Device according to the preceding claim, wherein the connecting structure (14) is an external thread which is designed to connect the connecting structure (14) in a force-fitting manner to an internal thread of the sensor receiving device (40) when the connection is established. [23] Device according to one of the two preceding claims, wherein the connecting structure (14) is formed on a side of the locking section (15) facing away from the securing section (11) in the axial direction. [24] Device according to one of the preceding claims, wherein the holder comprises an actuating structure (11, 15) which can be actuated manually and / or by a tool, and wherein the actuating structure (11, 15) is preferably formed by the locking section (15) and / or the securing section (11). [25] Device according to the preceding claim, wherein the actuating structure (11, 15) is an external hexagon. [26] Device according to one of the preceding claims, wherein the axial receptacle (13) for the sensor (30) is an axial through-bore through the holder (10). [27] Device according to one of the preceding claims, wherein the holder (10) is designed to receive the sensor (30) directly or indirectly by means of a protective sleeve. [28] Device according to one of the preceding claims, wherein the holder (10) comprises a seal (18) at an end facing away from the securing section (11) in the axial direction. [29] Device according to one of the preceding claims, wherein the holder (10) is made of metal, in particular brass. [30] Device according to one of the preceding claims, wherein the fixing section (27) projects perpendicularly from the transition section (24). [31] Device according to one of the preceding claims, wherein the transition section (24) connects the fastening section (22) to the fixing section (27). [32] Device according to one of the preceding claims, wherein the transition section (24) has a rectilinear inner contour (25). [33] Device according to one of the preceding claims, wherein the inner contour of the transition section (24) is designed to enter into an operative connection with a tool, in particular with a slotted screwdriver, in order to release the fixing element (20) from the holder (10) when the connection is established. [34] Device according to one of the preceding claims, wherein the inner contour (23) of the fastening section (22) is circular-arc-shaped. [35] Device according to the preceding claim, wherein the circular arc spans an angle greater than 30°, in particular greater than 45°. [36] Device according to one of the preceding claims, wherein the inner contour (23) of the fastening section (22) comprises a locking lug (21) at an end facing away from the transition section (24). [37] Device according to one of the preceding claims, wherein the fastening section (22) comprises a recess (26) at an end facing away from the transition section (24), in particular the second recess according to one of claims 10 and 11. [38] Device according to one of the preceding claims, wherein a cross-sectional area of the fixing section (27) perpendicular to an upper side of the fixing element (20) has a greatest extent which is adapted to the diameter of the locking bore (17). [39] Device according to the preceding claim, wherein the largest extent of the cross-sectional area and the diameter of the locking bore (17) form a clearance fit or a transition fit, wherein the diameter of the locking bore (17) is larger than the largest extent. [40] Device according to one of the preceding claims, wherein the fixing section (27) protrudes from the transition section (24) at an end of the transition section (24) facing away from the fastening section (22). [41] Device according to one of the preceding claims, wherein the fixing section (27) of the fixing element (20) is rod-shaped. [42] Device according to one of the preceding claims, wherein a cross-sectional area of the fixing section (27) perpendicular to an upper side of the fixing element (20) is rectangular, in particular square. [43] Device according to one of the preceding claims, wherein the fixing element (20) is substantially U-shaped in a plan view of an upper side and wherein the fixing section (27) and the fastening section (22) form the legs of the U. [44] Device according to one of the preceding claims, wherein the fixing element (20) is cut from a sheet metal, in particular a plastic or metal sheet, using a laser cutting process or a punching process. [45] Device according to one of the preceding claims, wherein the fixing element is made of metal, in particular stainless steel. [46] Device according to one of the preceding claims, wherein the fixing element (20) can be detachably connected to the holder (10) in a non-destructive manner. [47] Device according to one of the preceding claims, wherein the device comprises the sensor (30) and the sensor (30) is a rotary body with at least one circumferential groove (37) which extends over the entire circumference of the sensor (30). [48] Device according to the preceding claim, wherein the sensor (30) is a temperature sensor, in particular a thermocouple, a resistance thermometer, an NTC, a PTC or a digital sensor. [49] Device according to one of the two preceding claims, wherein the sensor (30) comprises at least three circumferential grooves (37) which are evenly spaced from one another in the axial direction of the sensor (30). [50] Device according to one of the three preceding claims, wherein the at least one circumferential groove (37) is formed in the axial direction of the sensor (30) in a first, in particular upper, half of the sensor (30). [51] Device according to one of the four preceding claims, wherein the sensor (30) comprises at least three circumferential grooves (37) formed in the axial direction of the sensor (30) in a first, in particular upper, half of the sensor (30). [52] Device according to one of the five preceding claims, wherein the sensor (30) comprises at one end located in the axial direction a cable (31) for connection to a measuring instrument.