A portable thermal resistance temperature secondary instrument calibrator

Abstract

The utility model discloses a kind of portable thermal resistance temperature secondary instrument calibrators, it is related to instrument calibrator technical field, specifically a kind of portable thermal resistance temperature secondary instrument calibrator, including instrument calibrator body, dustproof net for dust prevention and protective shell for protection, limit spring is installed in the inside of instrument calibrator body, one end of limit spring is installed with push block, the both sides of push block are all installed with guiding slide block for guiding, the bottom of push block is installed with L-shaped plate, the inner wall of L-shaped plate is installed with limit block. The portable thermal resistance temperature secondary instrument calibrator has improved the protective effect of display screen and key on instrument calibrator body, the effect of external protection is played through protective shell, improve the service life of instrument calibrator body, through the setting of clamping block, the opening and closing of protective shell is facilitated, the use of instrument calibrator body is facilitated, and the purpose of improving practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of instrument calibration technology, specifically a portable thermal resistance temperature secondary instrument calibration instrument. Background Technology

[0002] A portable resistance temperature detector (RTD) calibrator is a portable device used for calibrating and verifying RTDs, ensuring the accuracy and reliability of temperature measurements. The portable calibrator simulates standard resistance values ​​corresponding to various temperatures and outputs signals. The RTD under test measures the temperature value corresponding to the input signal, compares this value with the standard value, and thus determines the accuracy of the instrument under test.

[0003] Existing portable resistance temperature detectors (RTDs) suffer from several drawbacks. The display screen and buttons are prone to accidental touches or damage when not in use, affecting the instrument's lifespan. Furthermore, the dust filter on these instruments accumulates excessive dust over time, clogging the mesh and hindering heat dissipation. The dust filter is also difficult to disassemble and clean. This invention provides a portable RTD calibrator that solves these problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a portable secondary temperature resistance instrument calibrator, which solves the problems mentioned in the background section.

[0005] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: a portable resistance temperature secondary instrument calibrator, comprising an instrument calibrator body, a dustproof net for dust prevention, and a protective shell for protection. A limit spring is installed inside the instrument calibrator body, with a push block installed at one end of the limit spring. Guide sliders for guidance are installed on both sides of the push block. An L-shaped plate is installed at the bottom of the push block, and a limit block is installed on the inner wall of the L-shaped plate. A vertical plate is installed on one side of the dustproof net, and a positioning block is installed on one side of the vertical plate. A fixing block and a mating plate are respectively installed at the front of the instrument calibrator body. A reset spring is installed inside the protective shell, with a locking block installed at one end of the reset spring. Positioning sliders for guidance are installed at the top and bottom of the locking block, and a push plate is installed at the front of the locking block.

[0006] Optionally, the instrument calibration instrument body is provided with a guide groove for guiding the movement of the guide slider and a positioning groove adapted to the positioning block. The end of the guide slider is located inside the guide groove, and the end of the positioning block is located inside the positioning groove.

[0007] Optionally, the side of the vertical plate near the positioning block abuts against the instrument calibrator body, and ventilation openings are provided on both sides of the instrument calibrator body, with the dustproof net located inside the ventilation openings.

[0008] Optionally, the positioning block has a limiting groove inside that matches the limiting block, and the end of the limiting block is inserted into the limiting groove.

[0009] Optionally, the protective shell abuts against the instrument calibrator body, and the protective shell is rotatably connected to the fixed block via a shaft. A handle is installed at the rear of the instrument calibrator body.

[0010] Optionally, the protective shell has a positioning groove inside for guiding the movement of the positioning slider. The end of the positioning slider is located inside the positioning groove. One side of the mating plate has a slot that matches the locking block. The end of the locking block is inserted into the slot.

[0011] This utility model provides a portable secondary temperature resistance instrument calibrator, which has the following advantages: 1. This portable resistance temperature detector (RTD) calibrator, through the design of a protective shell, fixing block, mating plate, return spring, locking block, positioning slider, and push plate, enhances the protection of the display screen and buttons on the calibrator body. The protective shell provides external protection, extending the service life of the calibrator body. The locking block facilitates the opening and closing of the protective shell, making the calibrator body easier to use, thus improving its practicality.

[0012] 2. This portable resistance temperature detector (RTD) features a dustproof mesh, limit springs, push blocks, guide sliders, an L-shaped plate, limit blocks, a vertical plate, and positioning blocks. These components facilitate the removal and cleaning of the dustproof mesh, provide ventilation and heat dissipation through the vents, and ensure dust protection. The limit and positioning blocks facilitate easy assembly and disassembly of the dustproof mesh, allowing for convenient cleaning of any dust adhering to it, preventing clogging of the mesh, and promoting heat dissipation, thus enhancing its practicality. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention in frontal cross-section; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a top view sectional diagram of the present invention. Figure 5 This is a schematic diagram of a partial cross-section of the present invention. Figure 6 This utility model Figure 5 Enlarged structural diagram at point B; Figure 7 This is a side view of the structure of this utility model.

[0014] In the diagram: 1. Instrument calibrator body; 2. Dustproof net; 3. Protective shell; 4. Limit spring; 5. Push block; 6. Guide slider; 7. L-shaped plate; 8. Limit block; 9. Vertical plate; 10. Positioning block; 11. Fixing block; 12. Mating plate; 13. Return spring; 14. Locking block; 15. Positioning slider; 16. Push plate; 17. Handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0016] Please see Figures 1 to 7 This utility model provides a technical solution: a portable resistance temperature secondary instrument calibrator, including an instrument calibrator body 1, a dustproof net 2 for dust prevention, and a protective shell 3 for protection. A limit spring 4 is installed inside the instrument calibrator body 1. A push block 5 is installed at one end of the limit spring 4. Guide sliders 6 for guidance are installed on both sides of the push block 5. An L-shaped plate 7 is installed at the bottom of the push block 5. A limit block 8 is installed on the inner wall of the L-shaped plate 7. A vertical plate 9 is installed on one side of the dustproof net 2. A positioning block 10 is installed on one side of the vertical plate 9. A fixing block 11 and a mating plate 12 are respectively installed on the front of the instrument calibrator body 1. A reset spring 13 is installed inside the protective shell 3. A locking block 14 is installed at one end of the reset spring 13. Positioning sliders 15 for guidance are installed on the top and bottom of the locking block 14. A push plate 16 is installed on the front of the locking block 14.

[0017] Specifically, the cooperation between the guide slider 6 and the guide groove serves to guide the movement of the limit block 8, and the cooperation between the positioning block 10 and the positioning groove facilitates the positioning and installation of the dustproof net 2.

[0018] Please see Figures 2 to 3 The instrument calibration instrument body 1 has a guide groove for guiding the movement of the guide slider 6 and a positioning groove adapted to the positioning block 10. The end of the guide slider 6 is located inside the guide groove, and the end of the positioning block 10 is located inside the positioning groove.

[0019] Specifically, the ventilation openings facilitate the dissipation of heat generated by the internal electrical components of the instrument calibration instrument 1, while the dustproof net 2 serves to block dust.

[0020] Please see Figures 1 to 7 The side of the vertical plate 9 near the positioning block 10 abuts against the instrument calibrator body 1. Ventilation openings are provided on both sides of the instrument calibrator body 1, and the dustproof net 2 is located inside the ventilation opening.

[0021] Specifically, the cooperation between the limiting block 8 and the limiting groove facilitates the restriction of the position of the positioning block 10, thereby improving the stability of the dustproof net 2 installation.

[0022] Please see Figures 2 to 3 The positioning block 10 has a limiting groove inside that is adapted to the limiting block 8, and the end of the limiting block 8 is inserted into the limiting groove.

[0023] Specifically, the protective shell 3 serves to protect the display screen and buttons on the instrument calibration instrument body 1, and the handle 17 facilitates carrying and moving the instrument calibration instrument body 1.

[0024] Please see Figures 1 to 7 The protective shell 3 abuts against the instrument calibrator body 1. The protective shell 3 is rotatably connected to the fixing block 11 via a shaft. A handle 17 is installed at the rear of the instrument calibrator body 1.

[0025] Specifically, the cooperation between the positioning slider 15 and the positioning groove guides the movement of the locking block 14. The locking block 14 and the groove improve the stability when the protective cover is closed and enhance the protection of the display screen and buttons on the instrument calibration instrument body 1.

[0026] Please see Figures 4 to 6 The protective shell 3 has a positioning groove inside for guiding the movement of the positioning slider 15. The end of the positioning slider 15 is located inside the positioning groove. One side of the mating plate 12 has a slot that matches the locking block 14. The end of the locking block 14 is inserted into the slot.

[0027] In use, the instrument calibration instrument body 1 can be easily moved via handle 17 for convenient portability. The protective shell 3 protects the display screen and buttons on the instrument calibration instrument body 1, preventing accidental touches when not in use. When using the instrument calibration instrument body 1, the protective shell 3 is opened, and the push plate 16 is pushed. This causes the push plate 16 to move the locking block 14 and the positioning slider 15, causing the return spring 13 to contract. This guides the positioning slider 15 within the positioning groove, causing the end of the locking block 14 to leave the groove on the mating plate 12. Afterwards... Rotate the protective shell 3 so that it rotates around the point where it rotates with the fixed block 11, making it easier to expose the display screen and buttons on the instrument calibrator body 1 for convenient use. Conversely, when closing the protective shell 3, rotate it in the opposite direction to reset it. When the locking block 14 aligns with the slot on the mating plate 12, release the push plate 16. The elastic tension of the return spring 13 allows the end of the locking block 14 to insert into the slot, thus restricting the position of the protective shell 3 and protecting the display screen and buttons on the instrument calibrator body 1. To extend the service life of the instrument calibration instrument body 1, the heat generated by the electrical components inside the instrument calibration instrument body 1 is dissipated through the ventilation opening. The dustproof net 2 serves to block dust. When disassembling and cleaning the dustproof net 2, push the push block 5, which causes the push block 5 to move the guide slider 6, L-shaped plate 7, and limit block 8. This causes the limit spring 4 to contract under force, causing the guide slider 6 to slide along the length of the guide groove. This causes the end of the limit block 8 to leave the limit groove on the positioning block 10. Then, move the vertical plate 9 to make the positioning block 10 leave the positioning groove, and the dustproof net 2 to leave the ventilation opening. The opening facilitates the removal and cleaning of the dustproof net 2. Conversely, when installing the dustproof net 2, move it so that it enters the interior of the ventilation opening, allowing the end of the positioning block 10 to enter the positioning groove. When the vertical plate 9 abuts against the instrument calibration instrument body 1, the limiting groove on the positioning block 10 aligns with the limiting block 8. Release the push block 5, and through the elastic tension of the limiting spring 4, allow the end of the limiting block 8 to insert into the limiting groove, thus facilitating the restriction of the position of the positioning block 10 and facilitating the installation of the dustproof net 2, improving its practicality.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable resistance temperature detector (RTD) secondary instrument calibrator, comprising an instrument calibrator body, a dustproof mesh for dust prevention, and a protective shell for protection, characterized in that: The instrument calibrator body has a limit spring installed inside, with a push block installed at one end of the limit spring. Guide sliders for guidance are installed on both sides of the push block. An L-shaped plate is installed at the bottom of the push block, and a limit block is installed on the inner wall of the L-shaped plate. A vertical plate is installed on one side of the dustproof net, and a positioning block is installed on one side of the vertical plate. A fixing block and a mating plate are installed at the front of the instrument calibrator body. A reset spring is installed inside the protective shell, with a locking block installed at one end of the reset spring. Positioning sliders for guidance are installed at the top and bottom of the locking block, and a push plate is installed at the front of the locking block.

2. The portable resistance temperature detector calibrator according to claim 1, characterized in that: The instrument calibration instrument body has a guide groove for guiding the movement of the guide slider and a positioning groove adapted to the positioning block. The end of the guide slider is located inside the guide groove, and the end of the positioning block is located inside the positioning groove.

3. The portable resistance temperature detector calibrator according to claim 1, characterized in that: The side of the vertical plate near the positioning block abuts against the instrument calibrator body. Ventilation openings are provided on both sides of the instrument calibrator body, and the dustproof net is located inside the ventilation opening.

4. The portable resistance temperature detector calibrator according to claim 1, characterized in that: The positioning block has a limiting groove inside that matches the limiting block, and the end of the limiting block is inserted into the limiting groove.

5. The portable resistance temperature detector calibrator according to claim 1, characterized in that: The protective shell abuts against the instrument calibrator body. The protective shell is rotatably connected to the fixed block via a shaft. A handle is installed at the rear of the instrument calibrator body.

6. The portable resistance temperature detector calibrator according to claim 1, characterized in that: The protective shell has a positioning groove inside for guiding the movement of the positioning slider. The end of the positioning slider is located inside the positioning groove. One side of the mating plate has a slot that matches the locking block. The end of the locking block is inserted into the slot.

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