Temperature-adjustable pressure calibration device for wireless pressure recorder

Abstract

The utility model relates to the technical field of device calibration, in particular to a temperature-adjustable pressure calibration device for a wireless pressure recorder, which is characterized in that the bottom of an outer box body is provided with a support column and a box body dustproof cover, so that the contact conduction between the inside and the outside can be isolated; a matched calibration bracket is placed in a calibration cavity of the calibration tank main body, and a wireless pressure recorder is independently placed in the calibration bracket, so that the temperature uniformity is good; according to the calibration tank, the pressure tank cover is pressed and sealed on the calibration tank main body through the pressing heat preservation unit, so that the stability of a temperature field is ensured; the constant-temperature control unit comprises a semiconductor module placed at the bottom of the constant-temperature bath, a temperature control sensor placed in the calibration cavity, a radiator unit and a circuit board for controlling the temperature, the temperature and pressure values in the calibration cavity of the calibration tank main body can be accurately regulated and controlled, the calibration time is saved, and the calibration is accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment calibration, in particular to a temperature-adjustable pressure calibration device for a wireless pressure recorder. Background Art

[0002] A relatively wide application scenario of a wireless pressure recorder is for the calibration of a high-pressure steam sterilizer. The sterilization process is a typical high-temperature and high-pressure process. The wireless pressure recorder works in a composite field of temperature and pressure. However, at present, the quantity traceability of wireless data recorders in China still adopts a single-field traceability method, and the standard device used is a simple digital pressure controller and supporting devices. This traceability method has serious defects. The calibration environment is not consistent with the actual use environment of the equipment. Temperature and pressure are two thermotechnical parameters that interact and affect each other. The calibrated standard device is used for the calibration of the temperature and pressure composite field in the sterilizer cavity. The calibration of a single temperature or pressure will ignore the drift of the wireless recorder due to the use environment in the composite field.

[0003] There is also a device using a constant temperature bath, supporting tooling, and a digital pressure controller: generally, a tooling, a stainless-steel tank, is made. The pressure recorder to be calibrated is placed in the tank and sealed. There is an interface on the tank connected to the digital pressure controller. The tank is sunk into the constant temperature bath. The constant temperature bath is set to a certain stable temperature, and then pressure is applied to it for pressure calibration, which can achieve the effect of composite field calibration. However, the assembly is troublesome. Generally, the tank has to be sunk into the oil bath and is difficult to clean. At the same time, it is not easy to control when the pressure recorder in the tank reaches the stable condition, and it can only be evaluated by experience or the calibration time is extended, resulting in low calibration efficiency and inaccuracy.

[0004] Therefore, there is an urgent need for a temperature-adjustable pressure calibration device for a wireless pressure recorder. Content of the Utility Model

[0005] The utility model discloses a temperature-adjustable pressure calibration device for a wireless pressure recorder, aiming to solve the technical problems existing in the prior art.

[0006] The utility model adopts the following technical solutions:

[0007] A temperature-adjustable pressure calibration device for a wireless pressure recorder includes an outer box body, a constant temperature bath installed in the inner cavity of the outer box body, a calibration pressure tank unit placed in the middle of the constant temperature bath, a pressing and heat preservation unit acting on the upper end of the calibration pressure tank unit, a constant temperature control unit for maintaining the preset temperature field of the constant temperature bath, and a display panel for setting and real-time displaying temperature measurement information; wherein,

[0008] The calibration pressure tank unit includes a calibration pressure tank in a sealed state and a calibration bracket located in the calibration cavity of the calibration pressure tank for placing the wireless pressure recorder to be measured.

[0009] The pressing and heat preservation unit includes a bracket for driving the opening and closing of the pressure tank cover of the calibration pressure tank, a pressing bolt movably connected to the bracket for pressing the pressure tank cover, and a heat insulation block placed between the pressure tank cover and the bracket.

[0010] The constant temperature control unit includes a semiconductor module located at the bottom of the constant temperature tank, a temperature control sensor located at the bottom of the calibration cavity of the calibration pressure tank for real-time temperature measurement, a radiator unit installed on the outer side of the calibration pressure tank, and a circuit board control-connected to the semiconductor module, the temperature control sensor, and the radiator unit.

[0011] In some embodiments, the outer box body includes a box body main body and a box body dust cover connected by one side end. The bottom of the box body main body is provided with support columns. Heat dissipation holes are provided on the front and rear walls of the box body main body. A charging port and a control switch are provided on the rear wall of the box body main body. A constant temperature tank is provided in the middle of the inner cavity of the outer box body.

[0012] In some embodiments, the calibration pressure tank includes a calibration tank main body and a pressure tank cover installed on the top of the calibration tank main body for sealing the calibration cavity. A connector is fixedly installed at the center of the pressure tank cover and connected to a standard pressure source. The connector is connected to the calibration cavity through a pressure connection hole provided on the pressure tank cover.

[0013] In some embodiments, the calibration bracket includes a bracket enclosure and horizontal support frames arranged in parallel inside the bracket enclosure for placing the wireless pressure recorder. A plurality of the horizontal support frames are arranged in parallel to place a single wireless pressure recorder respectively. The bracket enclosure is provided with a plurality of parallel ring plates. The bracket enclosure is provided with a notch in the vertical direction. A notch and a handle plate are provided at the adjacent position of the top ring plate and the notch, so that the calibration bracket can be conveniently taken and placed from the calibration cavity.

[0014] In some embodiments, the bracket includes a longitudinal bracket and a horizontal bracket movably connected through a rotating shaft. The horizontal bracket is provided with a central through hole for placing the top boss of the pressure tank cover and a side through hole for the pressing bolt to pass through. The longitudinal bracket is fixedly connected to the outer wall of one side of the calibration tank main body, and the vertical pressing bolt is fixedly connected to the other side of the calibration tank main body, so that after the nut is screwed tightly on the threaded end, the horizontal bracket presses and seals the pressure tank cover.

[0015] In some embodiments, a sealing ring is provided at the connection between the pressure tank cover and the calibration tank main body.

[0016] In some embodiments, the heat insulation block is provided with a large through-hole and a small through-hole. The large through-hole is penetrated by a pressure guiding pipe connected to the adapter, and the small through-hole is penetrated by the threaded end of the pressing bolt.

[0017] In some embodiments, the radiator unit includes radiator brackets symmetrically fixed on the outer wall of the calibration tank body and a fan body installed on the radiator brackets. The semiconductor module and the fan body are both connected to the radiator power supply. The radiator unit extends through the constant temperature bath into the inner cavity of the outer box.

[0018] In some embodiments, the circuit board includes a temperature acquisition module connected to a temperature control sensor through a wire, a storage module for data storage, a PID controller for regulating the internal temperature of the constant temperature bath in real time according to the temperature data collected by the temperature control sensor and a preset temperature value, and a single-chip microcomputer for controlling the temperature measurement of the temperature control sensor, the rotation speed of the fan body, and the refrigeration / heating of the semiconductor module.

[0019] In some embodiments, the display panel is located at the upper end of the constant temperature bath and is provided with a power indicator light, a temperature status indicator light, and a touch screen. The touch screen is provided with a temperature adjustment button, a temperature value setting, and a real-time temperature display value. The circuit board is installed on the bottom wall of the display panel. The temperature status indicator light and the touch screen are both connected to the circuit board. Beneficial effects

[0020] The present utility model discloses a wireless pressure recorder adjustable temperature pressure calibration device. Compared with the prior art, the present utility model has the following advantages:

[0021] A wireless pressure recorder adjustable temperature pressure calibration device can isolate the internal and external contact conduction through the support columns provided at the bottom of the outer box and the box dust cover; by placing a calibration pressure tank in the middle of the constant temperature bath, a matching calibration bracket is placed in the calibration cavity of the calibration tank body, and a wireless pressure recorder is independently placed on the parallel horizontal support frames in the calibration bracket, with good temperature uniformity; by setting a pressing heat insulation unit, the pressure tank cover is tightly pressed and sealed on the calibration tank body to ensure the stability of the temperature field. By setting a constant temperature control unit connected to the display panel, the constant temperature control unit includes a semiconductor module placed at the bottom of the constant temperature bath, a temperature control sensor placed in the calibration cavity, a radiator unit, and a circuit board for controlling the temperature. By setting the display panel, the temperature control data can be set and the temperature measurement situation can be observed in real time, and the temperature and pressure values in the calibration cavity of the calibration tank body can be accurately controlled, which not only saves the calibration time but also ensures accurate and reliable calibration. Brief description of the drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. The attached drawings form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions explain the present utility model and do not constitute an improper limitation to the present utility model; in the attached drawings:

[0023] Figure 1 It is a schematic structural diagram of the technical solution of the adjustable-temperature pressure calibration device for the wireless pressure recorder disclosed in the embodiments of the present utility model;

[0024] Figure 2 is Figure 1 the B-B cross-sectional view of;

[0025] Figure 3 is Figure 1 the view in the direction of A of;

[0026] Figure 4 It is a schematic structural diagram of the technical solution for the connection between the calibration pressure tank and the bracket;

[0027] Figure 5 It is a schematic structural diagram of the calibration bracket;

[0028] Figure 6 It is the external view of the outer box;

[0029] Figure 7 is Figure 6 the view in the direction of E of;

[0030] Figure 8 It is a schematic structural diagram of the heat insulation block;

[0031] Figure 9 It is a circuit board block diagram.

[0032] In the figure:

[0033] Outer box body 1; box body main body 11; box body dust cover 12; support column 13; charging port 14; control switch 15; heat dissipation hole 16; constant temperature tank 17; calibration pressure tank unit 2; calibration pressure tank 21; calibration tank main body 211; calibration cavity 212; pressure tank cover 213; pressure connection hole 2131; boss 2132; adapter 214; sealing ring 215; calibration bracket 22; bracket enclosure 221; ring plate 2211; longitudinal plate 2212; horizontal support frame 222; notch 223; hand hook plate 224; notch 225; pressing and heat preservation unit 23; bracket 231; rotating shaft 2311; horizontal bracket 2312; longitudinal bracket 2313; central through hole 2314; side through hole 2315; heat preservation and heat insulation block 232; large through hole 2321; small through hole 2322; flange pin 233; pressing bolt 234; pressing nut 235; constant temperature control unit 3; semiconductor module 31; temperature control sensor 32; radiator unit 33; radiator bracket 331; fan main body 332; radiator power supply 333; circuit board 34; PID controller 341; temperature acquisition module 342; single chip microcomputer 343; storage module 344; wireless communication module 345; display panel 4; power indicator light 41; temperature status indicator light 42; touch screen 43; pressure guiding pipe 5; wireless pressure recorder 6; wire 7. Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. In the description of the present utility model, it should be noted that the term "including" mentioned in the specification and claims is an open-ended term, so it should be interpreted as "including but not limited to".

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] As Figures 1 - 9 shown, the technical solution disclosed by the present utility model is:

[0038] A temperature-adjustable pressure calibration device for a wireless pressure recorder, comprising an outer box body 1, a constant temperature bath 17 installed in the inner cavity of the outer box body 1, a calibration pressure tank unit 2 placed in the middle of the constant temperature bath 17, a pressing and heat-insulating unit 23 acting on the upper end of the calibration pressure tank unit 2, a constant temperature control unit 3 for maintaining the preset temperature field of the constant temperature bath 17, and a display panel 4 for setting and real-time displaying temperature measurement information; wherein,

[0039] The calibration pressure tank unit 2 includes a calibrated pressure tank 21 in a sealed state, and a calibration bracket 22 located in the calibration cavity 212 of the calibrated pressure tank 21 for placing the wireless pressure recorder 6 to be measured; the pressing and heat-insulating unit 23 includes a bracket 231 that drives the pressure tank cover 213 of the calibration pressure tank 21 to open and close, a pressing bolt 234 movably connected to the bracket 231 to press the pressure tank cover 213, and a heat-insulating block 232 placed between the pressure tank cover 213 and the bracket 231.

[0040] The constant temperature control unit 3 includes a semiconductor module 31 located at the bottom of the constant temperature bath 17, a temperature control sensor 32 located at the bottom of the calibration cavity 212 of the calibration pressure tank 21 for real-time temperature measurement, a radiator unit 33 installed on the outer side of the calibration pressure tank 21, and a circuit board 34 that is control-connected to the semiconductor module 31, the temperature control sensor 32, and the radiator unit 33.

[0041] As Figures 1 - 9 shown, a preferred embodiment of the present utility model:

[0042] A temperature-adjustable pressure calibration device for a wireless pressure recorder, comprising an outer box body 1, a constant temperature bath 17 installed in the inner cavity of the outer box body 1, a calibration pressure tank unit 2 placed in the middle of the constant temperature bath 17, a pressing and heat-insulating unit 23 acting on the upper end of the calibration pressure tank unit 2, a constant temperature control unit 3 for maintaining the preset temperature field of the constant temperature bath 17, and a display panel 4 for real-time displaying temperature measurement information.

[0043] The outer box body 1 includes a box body main body 11 and a box body dust cover 12 connected by one side end. Four small cylindrical support columns 13 are installed at the bottom of the box body main body 11 to isolate the outer box body 1 from the ground and prevent heat conduction. Heat dissipation holes 16 are provided on the front and rear walls of the box body main body 11 for heat dissipation; a charging port 14 and a control switch 15 for turning on the device are also provided on the rear wall of the box body main body 11. The charging port 14 is connected to an aviation plug, and a constant temperature bath 17 is provided in the middle of the inner cavity of the outer box body 1.

[0044] The calibration pressure tank 21 includes a calibration tank body 211, a pressure tank cover 213 installed on the top of the calibration tank body 211, with a calibration cavity 212 inside. A connector 214 connected to a standard pressure source (not shown in the figure) is fixedly installed at the center of the pressure tank cover 213. The connector 214 is communicated with the calibration cavity 212 through a pressure connection hole 2131 provided on the pressure tank cover 213. The calibration cavity 212 in this embodiment is set to be cylindrical.

[0045] The calibration pressure tank unit 2 includes a calibration pressure tank 21, a calibration bracket 22 located in the calibration cavity 212 of the calibration pressure tank 21, and a pressing and heat insulation unit 23; the tested wireless pressure recorder 6 is placed on the calibration bracket 22.

[0046] The pressing and heat insulation unit 23 includes a bracket 231 that drives the opening and closing of the pressure tank cover 213 of the calibration pressure tank 21, a pressing bolt 234 that is movably connected to the bracket 231 to press the pressure tank cover 213, and a heat insulation block 232 placed between the pressure tank cover 213 and the bracket 231. The heat insulation block 232 is made of EVA material and can well prevent heat dissipation.

[0047] The bracket 231 includes a longitudinal bracket 2313 and a horizontal bracket 2312 that are movably connected through a rotating shaft 2311. The horizontal bracket 2312 is provided with a central through hole 2314 for placing the top boss 2132 of the pressure tank cover 213 and a side through hole 2315 for the pressing bolt 234 to pass through; the longitudinal bracket 2313 is fixedly connected to the outer wall of one side of the calibration tank body 211, and the vertical pressing bolt 234 is fixedly connected to the other side of the calibration tank body 211, so that after the threaded end tightens the pressing nut 235, the horizontal bracket 2312 presses and seals the pressure tank cover 213; the pressure tank cover 213 and the side of the bracket 231 are connected through a flange pin 233.

[0048] A sealing ring 215 is provided at the connection between the pressure tank cover 213 and the calibration tank body 211, and the calibration tank body 211 is welded by argon arc welding.

[0049] The heat insulation block 232 is provided with a large through hole 2321 and a small through hole 2322. The large through hole 2321 is penetrated by a pressure guiding pipe 5 connected to the connector 214, and the small through hole 2322 is penetrated by the threaded end of the pressing bolt 234, so that after the threaded end tightens the pressing nut 235, the horizontal bracket 2312 presses the heat insulation block 232 firmly on the pressure tank cover 213.

[0050] The calibration bracket 22 includes a bracket enclosure 221 with a cylindrical outer shape and a horizontal support frame 222 arranged in parallel inside the bracket enclosure 221. In this embodiment, the bracket enclosure 221 with a cylindrical outer shape is provided. There are multiple horizontal support frames 222, and in this embodiment, two layers are provided, which are respectively used to place the wireless pressure recorder 6. The horizontal support frame 222 is provided with through holes for stably placing the wireless pressure recorder 6. The bracket enclosure 221 is formed by connecting multiple parallel ring plates 2211 and longitudinal plates 2212, and there are multiple large gaps in the middle to make the internal temperature uniform, so that each wireless pressure recorder 6 can measure the temperature accurately. The bracket enclosure 221 is provided with a notch 223 in the vertical direction, and the notch 223 enables it to be easily placed into the calibration chamber 212. A notch 225 is provided at the end of the top ring plate 2211 close to the notch 223, so that the end of the ring plate 2211 forms a hand hook plate 224. Through the hand hook plate 224, it is convenient to take and place the calibration bracket 22 from the calibration chamber 212.

[0051] The constant temperature control unit 3 includes a semiconductor module 31 located at the bottom of the constant temperature bath 17, a temperature control sensor 32 located at the bottom of the calibration chamber 212 of the calibration pressure tank 21 for real-time temperature measurement, a radiator unit 33 installed on the outer side of the calibration pressure tank 21, and a circuit board 34 that is control-connected to the semiconductor module 31, the temperature control sensor 32, and the radiator unit 33. In this embodiment, the temperature control sensor 32 uses a PT1000 temperature probe, which can monitor the temperature inside the calibration pressure tank 21. The monitored temperature is used as a control signal for PID adjustment to adjust the temperature inside the tank to the set temperature.

[0052] The radiator unit 33 includes radiator brackets 331 symmetrically fixed on the outer wall of the calibration tank main body 211 and a fan main body 332 installed on the radiator brackets 331. The semiconductor module 31 and the fan main body 332 are both connected to the radiator power supply 333. The radiator unit 33 passes through the constant temperature bath 17 and extends into the inner cavity of the outer box 1.

[0053] The circuit board 34 includes a temperature acquisition module 342 connected to the temperature control sensor 32 through a wire 7, a storage module 344 for data storage, a PID controller 341 that adjusts the internal temperature of the constant temperature bath 17 in real time according to the temperature data collected by the temperature control sensor 32 and the preset temperature value, and a single-chip microcomputer 343 that controls the temperature measurement of the temperature control sensor 32. The single-chip microcomputer 343 also controls the cooling / heating of the semiconductor module 31 and the rotation speed of the fan main body 332. A wireless communication module 345 is also provided, which can be wirelessly connected to mobile phones, computers, etc.

[0054] The display panel 4 is located at the upper end of the thermostat 17 and is provided with a power indicator light 41, a temperature status indicator light 42 and a touch screen 43. The touch screen 43 is provided with a temperature adjustment button, a temperature value setting area and a real-time temperature value display area. A circuit board 34 is installed on the bottom wall of the display panel 4. The temperature status indicator light 42 and the touch screen 43 are both connected to the circuit board 34.

[0055] After power-on, the power indicator light 41 lights up red, and after power-off, the power indicator light 41 goes out; for the temperature status indicator light 42, the green light flashes during the temperature control stabilization process, stays on constantly after stabilization, and goes out after stopping.

[0056] For the temperature adjustment button, the triangle pointing upward indicates an increase in temperature, and the triangle pointing downward indicates a decrease in temperature. Touching it once adjusts by 0.1, and long-pressing it quickly adjusts the temperature.

[0057] The set temperature and the real-time temperature are displayed on the touch screen 43 for easy observation. It is also provided with a start / stop button. After setting the target temperature value, clicking "start" activates the temperature control system, and clicking "stop" stops the temperature control system from working.

[0058] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims, and all of them belong to the protection scope of the present invention.

Claims

1. An adjustable-temperature pressure calibration device for a wireless pressure recorder, characterized in that: It includes an outer box body, a constant temperature bath installed in the inner cavity of the outer box body, a calibration pressure tank unit placed in the middle of the constant temperature bath, a pressing and heat preservation unit acting on the upper end of the calibration pressure tank unit, a constant temperature control unit for maintaining the preset temperature field of the constant temperature bath, and a display panel for setting and real-time displaying temperature measurement information; wherein, The calibration pressure tank unit includes a calibrated pressure tank in a sealed state, and a calibration bracket located in the calibration cavity of the calibration pressure tank for placing the wireless pressure recorder to be measured; The pressing and heat preservation unit includes a bracket for driving the opening and closing of the pressure tank cover of the calibration pressure tank, a pressing bolt movably connected to the bracket to press the pressure tank cover, and a heat preservation and heat insulation block placed between the pressure tank cover and the bracket; The constant temperature control unit includes a semiconductor module located at the bottom of the constant temperature bath, a temperature control sensor for real-time temperature measurement located at the bottom of the calibration cavity of the calibration pressure tank, a radiator unit installed on the outer side of the calibration pressure tank, and a circuit board control-connected to the semiconductor module, the temperature control sensor, and the radiator unit.

2. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 1, characterized in that: The outer box body includes a box body main body and a box body dust cover connected by one side end. Support columns are provided at the bottom of the box body main body. Heat dissipation holes are provided on the front and rear walls of the box body main body. A charging port and a control switch are provided on the rear wall of the box body main body. A constant temperature bath is provided in the middle of the inner cavity of the outer box body.

3. The wireless pressure recorder adjustable temperature pressure calibration device according to claim 1, characterized in that: The calibration pressure tank includes a calibration tank main body and a pressure tank cover installed on the top of the calibration tank main body for sealing the calibration cavity. A adapter connected to the standard pressure source is fixedly installed at the center of the pressure tank cover. The adapter is connected to the calibration cavity through a pressure connection hole provided on the pressure tank cover.

4. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 3, wherein: The calibration bracket includes a bracket enclosure and horizontal support frames arranged in parallel inside the bracket enclosure for placing the wireless pressure recorder. A plurality of horizontal support frames are arranged in parallel to place a single wireless pressure recorder respectively; The bracket enclosure is provided with a plurality of parallel ring plates. The bracket enclosure is provided with a notch in the vertical direction. A notch and a hand hook plate are provided at the adjacent position of the top ring plate and the notch, so that the calibration bracket can be conveniently taken and placed from the calibration cavity.

5. The adjustable temperature pressure calibration device of the wireless pressure recorder according to claim 3, characterized in that: The bracket includes a longitudinal bracket and a horizontal bracket movably connected by a rotating shaft. The horizontal bracket is provided with a central through hole for placing the top boss of the pressure tank cover and a side through hole for the pressing bolt to pass through; The longitudinal bracket is fixedly connected to the outer wall of one side of the calibration tank main body, and the vertical pressing bolt is fixedly connected to the other side of the calibration tank main body, so that after the nut is screwed tightly on the threaded end, the horizontal bracket presses the pressure tank cover tightly for sealing.

6. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 5, characterized in that: A sealing ring is provided at the connection between the pressure tank cover and the calibration tank main body.

7. The adjustable temperature pressure calibration device for a wireless pressure recorder according to claim 5, characterized in that: The heat preservation and heat insulation block is provided with a large through hole and a small through hole. The large through hole is penetrated by a pressure guiding pipe connected to the adapter, and the small through hole is penetrated by the threaded end of the pressing bolt.

8. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 3, characterized in that: The radiator unit includes radiator brackets symmetrically and fixedly connected to the outer wall of the calibration tank body, and a fan body mounted on the radiator brackets. Both the semiconductor module and the fan body are connected to the radiator power supply. The radiator unit extends through the thermostat into the inner cavity of the outer box.

9. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 8, characterized in that: The circuit board includes a temperature acquisition module connected to a temperature control sensor through a wire, a storage module for data storage, a PID controller for regulating the internal temperature of the thermostat in real time according to the temperature data collected by the temperature control sensor and a preset temperature value, and a single-chip microcomputer for controlling the temperature measurement of the temperature control sensor, the rotation speed of the fan body, and the refrigeration / heating of the semiconductor module.

10. The adjustable temperature pressure calibration device for the wireless pressure recorder according to claim 1, characterized in that: The display panel is located at the upper end of the thermostat and is provided with a power indicator light, a temperature status indicator light, and a touch screen. The touch screen is provided with a temperature adjustment button, a temperature value setting, and a real-time temperature display value. The circuit board is installed on the bottom wall of the display panel. The temperature status indicator light and the touch screen are both connected to the circuit board.

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