CN217878047U - High-precision temperature sensor - Google Patents
High-precision temperature sensor Download PDFInfo
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- CN217878047U CN217878047U CN202221345312.2U CN202221345312U CN217878047U CN 217878047 U CN217878047 U CN 217878047U CN 202221345312 U CN202221345312 U CN 202221345312U CN 217878047 U CN217878047 U CN 217878047U
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Abstract
The utility model discloses a high-precision temperature sensor, which belongs to the field of sensors and comprises an installation seat and a protective shell, wherein the bottom of the installation seat is fixedly connected with a thread bush, the protective shell is sleeved at the bottom of the installation seat through threads, an elastic part is arranged inside the protective shell, plug connectors are arranged inside the installation seat, the number of the plug connectors is two, an overvoltage protection device is welded between the two plug connectors, a connecting wire is welded at the bottom end of the plug connector, and the connecting wire is provided with a thermosensitive element; the high-precision temperature sensor can enable the thermosensitive element to be in full contact with an object to be detected, and the problem that the contact part of the temperature sensor and the object to be detected is often just one surface, the contact area is too small to truly reflect the temperature of the object to be detected, so that the detection error is large is solved, and the detection effect of the sensor is improved.
Description
Technical Field
The utility model belongs to the technical field of the sensor, concretely relates to temperature sensor of high accuracy.
Background
A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The temperature sensor is the core part of a temperature measuring instrument, and is of various varieties, however, most of the existing temperature sensors are available; the thermal resistance temperature sensor is a sensor thermometer for measuring temperature by utilizing the principle that the resistance value of a conductor or a semiconductor changes along with the temperature change, a material for manufacturing the thermal resistance is required to have the resistance temperature coefficient and the resistivity which are as large and stable as possible, the output is preferably linear, the physical and chemical properties are stable, the complex linearity is good, and the like, however, the contact part of the existing partial temperature sensor and an object to be measured is often just one surface, the contact area is too small to truly reflect the temperature of the object to be measured, the detection error is large, and meanwhile, when transient large voltage is generated on a lead wire due to accidents, the temperature sensor can be damaged, so that the high-precision temperature sensor is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a temperature sensor of high accuracy to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a temperature sensor of high accuracy, includes mount pad and protecting crust, the bottom fixedly connected with thread bush of mount pad, the protecting crust screw thread cup joints the bottom at the mount pad, the inside of protecting crust is provided with the elastic component, the inside of mount pad is provided with the plug connector, the quantity of plug connector is two, two the welding has the overvoltage protection device between the plug connector, the bottom welding of plug connector has the connecting wire, the connecting wire be provided with thermal element.
As a preferred embodiment, a sealing ring is arranged between the mounting seat and the protective shell, and an internal thread matched with the external thread of the thread sleeve is formed inside the protective shell.
In a preferred embodiment, the overvoltage protection device is a varistor.
In a preferred embodiment, one end of the connecting wire penetrates and extends to the outside of the bottom end of the protective shell, and the thermosensitive element is located outside the protective shell.
Compared with the prior art, the beneficial effects of the utility model are that:
the high-precision temperature sensor can ensure that the thermosensitive element is fully contacted with an object to be detected, and avoids the problem that the contact part of the temperature sensor and the object to be detected is often just one surface, and the contact area is too small to truly reflect the temperature of the object to be detected, so that the detection error is larger, thereby improving the detection effect of the sensor;
according to the high-precision temperature sensor, the overvoltage protection device is arranged, so that the voltage dependent resistor can reduce the impedance suddenly at a very high speed when a large transient voltage occurs, and absorb a large current to ensure that a rear thermosensitive element is prevented from being impacted by the large transient voltage, so that the use of the sensor is protected;
the high-precision temperature sensor is small in size, low in manufacturing cost and worthy of popularization and application.
Drawings
Fig. 1 is a front schematic view of the structure of the present invention.
In the figure: 1. a mounting base; 2. a protective shell; 3. a plug-in unit; 4. an overvoltage protection device; 5. a seal ring; 6. a threaded sleeve; 7. an elastic member; 8. a connecting wire; 9. a heat sensitive element.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.
Referring to fig. 1, the present invention provides a high-precision temperature sensor, which includes a mounting base 1 and a protective shell 2, in order to improve the detection precision, a threaded sleeve 6 is fixedly connected to the bottom of the mounting base 1, the protective shell 2 is screwed on the bottom of the mounting base 1, an elastic member 7 is disposed inside the protective shell 2, two plug connectors 3 are disposed inside the mounting base 1, an overvoltage protection device 4 is welded between the two plug connectors 3, a connecting wire 8 is welded to the bottom end of the plug connector 3, a thermal sensitive element 9 is disposed on the connecting wire 8, a sealing ring 5 is disposed between the mounting base 1 and the protective shell 2, an internal thread adapted to the external thread of the threaded sleeve 6 is disposed inside the protective shell 2, the overvoltage protection device 4 is a varistor, one end of the connecting wire 8 penetrates and extends to the outside of the bottom end of the protective shell 2, the thermosensitive element 9 is located outside the protective shell 2, the exposed thermosensitive element 9 can make the contact surface with the detection fluid larger, the thermosensitive element 9 can be made to be in full contact with the object to be detected, the contact part between the temperature sensor and the object to be detected is avoided to be always just one surface, the contact area is too small to truly reflect the temperature of the object to be detected, the problem of large detection error is caused, the detection effect of the sensor is improved, through the arrangement of the overvoltage protection device 4, the voltage dependent resistor can suddenly reduce the impedance at a high speed when transient high voltage occurs, a large current is absorbed at the same time, the rear thermosensitive element 9 is ensured to be free from the impact of the transient high voltage, and the protection is provided for the use of the sensor.
The utility model discloses a theory of operation and use flow: the first exposed thermosensitive element 9 can make the contact surface with the detection fluid larger, and can make the thermosensitive element 9 fully contact with the object to be detected, thereby avoiding the problem that the contact part of the temperature sensor and the object to be detected is often only one surface, the contact area is too small to truly reflect the temperature of the object to be detected, and the detection error is larger, thereby improving the detection effect of the sensor, through arranging the overvoltage protection device 4, the piezoresistor can suddenly reduce the impedance at a very high speed when the transient large voltage occurs, and simultaneously absorb a large current, thereby ensuring that the rear thermosensitive element 9 is prevented from being impacted by the transient large voltage, and providing protection for the use of the sensor.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A high-precision temperature sensor comprising a mounting base (1) and a protective shell (2), characterized in that: the bottom fixedly connected with thread bush (6) of mount pad (1), protective housing (2) screw thread cup joints in the bottom of mount pad (1), the inside of protective housing (2) is provided with elastic component (7), the inside of mount pad (1) is provided with plug connector (3), the quantity of plug connector (3) is two, two the welding has overvoltage protection device (4) between plug connector (3), the bottom welding of plug connector (3) has connecting wire (8), connecting wire (8) be provided with thermal element (9).
2. A high accuracy temperature sensor according to claim 1, wherein: a sealing ring (5) is arranged between the mounting seat (1) and the protective shell (2), and an internal thread matched with the external thread of the thread sleeve (6) is formed in the protective shell (2).
3. A high accuracy temperature sensor according to claim 1, wherein: the overvoltage protection device (4) is a varistor.
4. A high accuracy temperature sensor according to claim 1, wherein: one end of the connecting wire (8) penetrates through and extends to the outside of the bottom end of the protective shell (2), and the thermosensitive element (9) is located outside the protective shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221345312.2U CN217878047U (en) | 2022-05-31 | 2022-05-31 | High-precision temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221345312.2U CN217878047U (en) | 2022-05-31 | 2022-05-31 | High-precision temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217878047U true CN217878047U (en) | 2022-11-22 |
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ID=84093895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221345312.2U Active CN217878047U (en) | 2022-05-31 | 2022-05-31 | High-precision temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217878047U (en) |
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2022
- 2022-05-31 CN CN202221345312.2U patent/CN217878047U/en active Active
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