A temperature sensor calibration device that can simulate an in-line temperature environment
By simulating the environment along the path of thermocouples in high-temperature and low-temperature regions, and using an independently controllable temperature furnace and standard sensors, the problem of thermocouple temperature measurement deviation was solved, and accurate calibration and temperature measurement performance evaluation under high-temperature conditions were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHONGKE ENERGY POWER RES CENT
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-07
AI Technical Summary
In high-temperature measurements, the thermocouple travels across multiple temperature zones, leading to measurement deviations, a problem that current technologies have not been able to effectively solve.
It employs two independent, temperature-controlled furnace bodies and a one-dimensional displacement mechanism to simulate the environment along the path of a thermocouple in high-temperature and low-temperature zones. A standard sensor provides a reference, and computer and testing software coordinate control and data acquisition to accurately calibrate the temperature measurement performance of the sensor.
It enables accurate calibration of the sensor in high-temperature environments, quantitatively assesses the insulation failure threshold and temperature measurement deviation caused by thermal conductivity, and improves temperature measurement accuracy.
Smart Images
Figure CN224471168U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of temperature measurement and calibration technology, specifically, it relates to a temperature sensor calibration device that can simulate the temperature environment along the process. Background Technology
[0002] In temperature measurements above 300℃, thermocouples are widely used in high-temperature metal wall and pipeline fluid temperature measurement due to their high temperature resistance, small armor size (low thermal inertia, fast response speed), and ease of secondary processing (testing and modification). During thermocouple temperature measurement, the sensing junction is fixed to the metal surface or inserted into the fluid. The sensing junction (hot junction) and the measuring junction (cold junction, potential difference measuring junction) are connected by the thermocouple and compensating wires. The temperature acquisition module acquires the thermoelectric potential difference and performs cold junction compensation. The measured value is communicated to the display and analysis equipment (host operating station and display operating station). To improve measurement accuracy, base metal thermocouples typically use compensating wires and connectors of the same material.
[0003] Because thermocouples traverse multiple temperature zones (high-temperature and low-temperature zones) from the sensing junction to the measuring junction, drastic changes in ambient temperature can significantly impact measurements. When measuring high-temperature hot junction components, the thermocouple armor wire, except for the sensing junction, passes through a high-temperature zone exceeding 900°C. This high temperature can cause a decrease in the insulation performance of the thermocouple wire filler material, requiring quantitative measurement of the impact of insulation degradation on thermocouples of different specifications. When the pipe is exposed to the atmosphere or other low-temperature environments, the temperature measured at the sensing junction is the final equilibrium temperature after convective and radiative heat transfer between the measured object or fluid and the thermocouple, heat conduction from the thermocouple and armor from the high-temperature zone to the low-temperature zone, and radiative heat transfer between the inner wall of the pipe and the thermocouple. This temperature deviates from the actual temperature of the measured object or fluid. Due to limitations in the pipe diameter, the actual insertion depth of the thermocouple may not reach the ideal depth (under-insertion). Therefore, the deviation caused by heat conduction from the thermocouple and armor becomes the main source of measurement error. Both of these temperature zones (high-temperature and low-temperature zones) require quantitative evaluation of their impact on temperature measurement.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies.
[0005] Therefore, in order to solve the above problems, this utility model provides a temperature sensor calibration device that can simulate the temperature environment along the process. Utility Model Content
[0006] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a temperature sensor calibration device that can simulate the temperature environment along the process.
[0007] The objective of this utility model can be achieved through the following technical solutions:
[0008] A temperature sensor calibration device for simulating a temperature environment along a travel path includes a through-hole temperature-controlled furnace for simulating the temperature environment along a travel path. The entire furnace chamber of the through-hole temperature-controlled furnace is open. A single-hole temperature-controlled furnace for simulating the temperature environment of a temperature measurement zone is adjacent to one side of the through-hole temperature-controlled furnace. One end of the single-hole temperature-controlled furnace is open and connects to the corresponding open end face of the through-hole temperature-controlled furnace, while the other end is closed. The through-hole and single-hole temperature-controlled furnaces are connected to a computer and testing software via a second dedicated data cable and a third dedicated data cable, respectively. The computer and testing software control the temperature of the two different temperature zones of the through-hole and single-hole temperature-controlled furnaces. A one-dimensional displacement mechanism is provided on one side of the through-hole temperature-controlled furnace, and a clamping assembly is mounted on the one-dimensional displacement mechanism. The clamping assembly clamps and connects to... The system includes a measured temperature sensor, a standard temperature sensor, and a low-temperature sensor. The measured temperature sensor and the standard temperature sensor penetrate the furnace chamber of the double-aperture temperature-controlled furnace and extend into the interior of the single-aperture temperature-controlled furnace. Their insertion depth can be adjusted by a one-dimensional displacement mechanism. The temperature measuring contacts on the other end of the measured temperature sensor and the standard temperature sensor are connected to a temperature acquisition instrument. One end of the low-temperature sensor is equipped with a temperature probe, which is located outside the double-aperture temperature-controlled furnace and the single-aperture temperature-controlled furnace, in an area used to simulate the environment along the low-temperature zone. The temperature probe is connected to a temperature display via a fourth dedicated data line. The temperature display is used to display the room temperature in real time to simulate the low-temperature environment. The temperature acquisition instrument is connected to a computer and testing software via a first dedicated data line.
[0009] As a preferred technical solution of this utility model, the clamping assembly includes a mounting base fixed on the vertical rod of the one-dimensional displacement mechanism. The mounting base has three sets of central holes, which are arranged in a straight line with their axes parallel to each other and aligned with the central axis of the single-hole temperature-controlled furnace. The mounting base is also threaded with three sets of fastening bolts, which correspond one-to-one with the three sets of central holes. Each set of fastening bolts includes two bolts, which are respectively located on opposite sides of the central hole.
[0010] As a preferred technical solution of this utility model, the opening end of the single-hole temperature control furnace is provided with an end face, and a cylindrical temperature equalization component is coaxially arranged inside the furnace chamber of the single-hole temperature control furnace. Its outer diameter matches the inner wall of the furnace chamber of the single-hole temperature control furnace, and its inner hole is through, allowing the temperature sensor to be measured and the standard temperature sensor to pass through. The temperature equalization component extends to the end face of the opening end of the single-hole temperature control furnace.
[0011] As a preferred embodiment of this invention, the temperature equalization component is made of Fe-Cr-Al alloy.
[0012] As a preferred embodiment of this utility model, a first temperature sensing contact is installed at one end of the temperature sensor to be measured, and a second temperature sensing contact is installed at one end of the standard temperature sensor. The first and second temperature sensing contacts are placed inside the furnace chamber of a single-aperture temperature-controlled furnace, and the first and second temperature sensing contacts are located at the center point of the single-aperture temperature-controlled furnace.
[0013] As a preferred embodiment of this utility model, the standard temperature sensor is a WPRB-1 first-class standard thermocouple, the low-temperature sensor is a PDM483 cold mirror precision dew point meter, and the temperature acquisition instrument is a DTZ-02.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. In this invention, two independent temperature-controlled furnace bodies (a furnace with two openings and a furnace with one opening) are used to accurately simulate the high-temperature zone environment along the process and the high-temperature measurement zone environment experienced by the temperature sensor in actual use. The insertion depth of the temperature sensor under test is precisely controlled by a one-dimensional displacement mechanism. At the same time, a standard temperature sensor and a low-temperature sensor provide accurate reference benchmarks. The computer and testing software are responsible for coordinating and controlling the furnace temperature, the displacement mechanism, and collecting all sensor data. The final effect is to accurately calibrate the temperature measurement performance of the temperature sensor under test (such as a sheathed thermocouple) under a controllable and quantitatively adjustable comprehensive temperature environment of high temperature along the process, high temperature measurement, and low temperature zone. In particular, it is used to quantitatively evaluate the insulation failure threshold and the temperature measurement deviation caused by thermal conductivity.
[0016] 2. In this utility model, the operating temperature environment (path environment, temperature measurement zone environment) of the calibrated temperature sensor can be simulated more accurately, realizing the temperature measurement environment of the temperature sensor under near-real conditions, and obtaining the temperature measurement deviation of the sensor calibration.
[0017] 3. In this utility model, the device can also be used to correct sensor temperature measurement deviations caused by the temperature environment along the process or to determine whether the sensor measurement values under the environment along the process meet the uncertainty requirements of the process parameters. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a flowchart of the present invention.
[0021] Figure label:
[0022] 1. Two-hole temperature-controlled furnace; 2. Single-hole temperature-controlled furnace; 3. Temperature sensor to be measured; 4. Standard temperature sensor; 5. Low-temperature sensor; 6. One-dimensional displacement mechanism; 7. Clamping assembly; 8. Temperature acquisition instrument; 9. Computer and testing software; 10. Temperature display; 11. Temperature equalization assembly; 12. First dedicated data cable; 13. Second dedicated data cable; 14. Third dedicated data cable; 15. Fastening bolt; 16. First temperature sensing contact; 17. Second temperature sensing contact; 18. Temperature measuring contact; 19. Temperature probe; 20. End face. Detailed Implementation
[0023] The utility model will now be further described with reference to the accompanying drawings and specific embodiments:
[0024] Example: Please refer to Figure 1 and Figure 2According to an embodiment of the present invention, a temperature sensor calibration device for simulating a temperature environment along a travel path includes a dual-aperture temperature control furnace 1 for simulating a temperature environment along a travel path. The entire furnace chamber of the dual-aperture temperature control furnace 1 is through-hole. A single-aperture temperature control furnace 2 for simulating the temperature environment of the temperature measurement zone is arranged adjacent to one side of the dual-aperture temperature control furnace 1. One end of the single-aperture temperature control furnace 2 is open and connected to the corresponding open end face of the dual-aperture temperature control furnace 1, and the other end is closed. The dual-aperture temperature control furnace 1 and the single-aperture temperature control furnace 2 are respectively connected to a computer and testing software 9 through a second dedicated data line 13 and a third dedicated data line 14. The computer and testing software 9 realize the temperature control of the two different temperature zones of the dual-aperture temperature control furnace 1 and the single-aperture temperature control furnace 2. The combination of the dual-aperture temperature control furnace 1 and the single-aperture temperature control furnace 2, the former as a travel path environment simulator, can set a gradient temperature field to examine the insulation resistance decay law of thermocouples under long-term high temperature exposure, and the latter as a measuring point environment generator, accurately reproduces the real working temperature of the sensing end and is compared with the standard. Thermocouples are compared in real time to isolate system deviations caused by thermal conductivity errors. A one-dimensional displacement mechanism 6 is provided on one side of the open-hole temperature-controlled furnace 1. The one-dimensional displacement mechanism 6 is a high-precision electric linear slide equipped with a digital displacement display. A clamping assembly 7 is installed on the one-dimensional displacement mechanism 6. The clamping assembly 7 clamps and connects the temperature sensor 3 to be measured, the standard temperature sensor 4, and the low-temperature sensor 5. The temperature sensor 3 to be measured and the standard temperature sensor 4 pass through the furnace chamber of the open-hole temperature-controlled furnace 1 and extend into the interior of the single-open-hole temperature-controlled furnace 2. Their insertion depth can be adjusted by the one-dimensional displacement mechanism 6. Through the one-dimensional displacement mechanism 6, the position of the entire sensing link becomes an adjustable variable, which greatly enhances the flexibility of the experiment. Furthermore, this mechanism, together with the clamping assembly 7, achieves the unity of positioning and locking. On the one hand, the movement accuracy is controlled by the mechanical guide rail and the digital scale. On the other hand, by applying symmetrical pressure, the bending or stress concentration of the sensor caused by unilateral clamping is avoided, ensuring the consistency of the heat conduction path.Temperature sensor 3 and standard temperature sensor 4 are connected to temperature acquisition instrument 8 via temperature sensing contacts 18 at their other ends. A temperature probe 19 is installed at one end of low-temperature sensor 5. Temperature probe 19 is located outside the open-hole temperature-controlled furnace 1 and the single-hole temperature-controlled furnace 2, in an area used to simulate the environment along the low-temperature zone. Temperature probe 19 is connected to temperature display 10 via a fourth dedicated data line. Temperature display 10 displays room temperature in real time, simulating the low-temperature environment through indoor temperature. Temperature acquisition instrument 8 is connected to computer and testing software 9 via a first dedicated data line 12. All acquisition and control signals are integrated into the same computer and testing software platform 9, achieving time synchronization—that is, furnace temperature setting, displacement adjustment, temperature reading, and environmental parameters are all timestamped, supporting subsequent dynamic response analysis. This integrated hardware and software design makes the entire system not only a "calibration tool" but also a "research platform" that can be used to explore the performance limits of new armor materials, coating processes, and compensating wire structures.
[0025] Please see Figure 1 The clamping assembly 7 includes a mounting base fixed on the vertical rod of the one-dimensional displacement mechanism 6. The mounting base has three sets of central holes arranged in a straight line, with their axes parallel to each other and aligned with the central axis of the single-hole temperature control furnace 2. This ensures that the measured temperature sensor 3, the standard temperature sensor 4, and the low-temperature sensor 5 remain coaxial during movement. The mounting base is also threaded with three sets of fastening bolts 15, which correspond one-to-one with the three sets of central holes. Each set of fastening bolts 15 includes two bolts, which are respectively located on opposite sides of the central hole. After the fastening bolts 15 are screwed in, they press against the outer wall of the sensor to achieve radial limiting and axial fixation, preventing displacement caused by thermal expansion during the test.
[0026] Please see Figure 1 The single-aperture temperature-controlled furnace 2 has an end face 20 at the opening end. A cylindrical temperature equalization component 11 is coaxially arranged inside the furnace chamber of the single-aperture temperature-controlled furnace 2. Its outer diameter matches the inner wall of the furnace chamber of the single-aperture temperature-controlled furnace 2. The inner hole is through and allows the temperature sensor 3 to be measured and the standard temperature sensor 4 to pass through. The temperature equalization component 11 extends to the end face 20 at the opening end of the single-aperture temperature-controlled furnace 2 to reduce heat loss along the axial direction and to achieve uniform temperature field inside the furnace chamber through high heat capacity metal material.
[0027] Please see Figure 1 The temperature equalization component 11 is made of Fe-Cr-Al alloy, which has excellent high-temperature oxidation resistance and thermal stability, making it suitable as a temperature equalization structure in high-temperature areas.
[0028] Please see Figure 1The temperature sensor 3 being measured has a first temperature sensing contact 16 installed at one end, and the standard temperature sensor 4 has a second temperature sensing contact 17 installed at one end. The first temperature sensing contact 16 and the second temperature sensing contact 17 are placed inside the furnace chamber of the single-aperture temperature-controlled furnace 2, and the first temperature sensing contact 16 and the second temperature sensing contact 17 are located at the center point of the single-aperture temperature-controlled furnace 2.
[0029] Please see Figure 1 The standard temperature sensor 4 is a WPRB-1 first-class standard thermocouple, the low-temperature sensor 5 is a PDM483 cold mirror precision dew point meter, and the temperature acquisition instrument 8 is a DTZ-02.
[0030] The working principle of a temperature sensor calibration device that can simulate the temperature environment along the process is as follows:
[0031] When simulating the environment along the high-temperature zone and the high-temperature measurement zone: the measured temperature sensor 3 and the standard temperature sensor 4 are fixed on the clamping assembly 7 of the one-dimensional displacement mechanism 6. The clamping assembly 7 of the one-dimensional displacement mechanism 6 is moved towards the single-aperture temperature-controlled furnace 2, so that the first temperature sensing contact 16 and the second temperature sensing contact 17 of the measured temperature sensor 3 and the standard temperature sensor 4 pass through the entire furnace chamber of the open-aperture temperature-controlled furnace 1 and are placed at the center point inside the furnace chamber of the single-aperture temperature-controlled furnace 2; the temperature measuring contact 18 of the measured temperature sensor 3 and the standard temperature sensor 4 is connected to the temperature acquisition instrument 8; after the measured temperature sensor 3 and the standard temperature sensor 4 are connected... The temperature acquisition instrument 8, the two-hole temperature control furnace 1, and the single-hole temperature control furnace 2 are connected to the computer and the test software 9 via the second dedicated data cable 13 and the third dedicated data cable 14, respectively. Both the two-hole temperature control furnace 1 and the single-hole temperature control furnace 2 are turned on. The two-hole temperature control furnace 1 simulates the environment along different high-temperature zones. The test data of the temperature sensor 3 and the standard temperature sensor 4 in the different high-temperature measurement zones simulated by the single-hole temperature control furnace 2 are observed in real time. The temperature value of the temperature sensor 3 when passing through different high-temperature zones is quantitatively obtained. If the test data is abnormal, the insulation layer failure result of the temperature sensor 3 can be quantitatively given, and the failure temperature threshold can be obtained.
[0032] When simulating the low-temperature zone environment and the high-temperature measurement zone environment: the measured temperature sensor 3, the standard temperature sensor 4, and the low-temperature sensor 5 are fixed on the clamping assembly 7 of the one-dimensional displacement mechanism 6. The clamping assembly 7 on the one-dimensional displacement mechanism 6 is moved towards the single-aperture temperature-controlled furnace 2, so that the first temperature sensing contact 16 and the second temperature sensing contact 17 of the measured temperature sensor 3 and the standard temperature sensor 4 pass through the entire furnace chamber of the open-aperture temperature-controlled furnace 1 and are placed at the center point inside the furnace chamber of the single-aperture temperature-controlled furnace 2; the temperature sensing contact 18 of the measured temperature sensor 3 and the standard temperature sensor 4 is connected to the temperature acquisition instrument 8; the temperature probe 19 of the low-temperature sensor 5 is placed in the indoor air and connected to the temperature display 10 through a dedicated data cable. Next, the temperature display 10 can display the indoor temperature in real time, i.e., the current low-temperature zone environment. After the measured temperature sensor 3 and the standard temperature sensor 4 are connected, the temperature acquisition instrument 8, the two-hole temperature control furnace 1, and the single-hole temperature control furnace 2 are connected to the computer and the test software 9 through the first dedicated data line 12, the second dedicated data line 13, and the third dedicated data line 14, respectively. After the two-hole temperature control furnace 1 is turned off and the single-hole temperature control furnace 2 is turned on, different high-temperature measurement zone environments are simulated—i.e., the high-temperature zone. The part outside the single-hole temperature control furnace 2 is the room temperature—i.e., the low-temperature zone. By simulating different high-temperature measurement zone environments and low-temperature zone environments, the temperature measurement deviation caused by the measured temperature sensor conducting heat from the high-temperature zone to the low-temperature zone can be quantitatively given.
[0033] Furthermore, when the temperature control furnace 1 with two openings and the temperature control furnace 2 with one opening are turned on, and the ambient temperature along the high-temperature zone of the temperature control furnace 1 with two openings is the same as the ambient temperature of the high-temperature measurement zone of the temperature control furnace 2 with one opening, the distance from the first sensing contact 16 and the second sensing contact 17 of the temperature sensor 3 being measured and the standard temperature sensor 4 to the end face of the opening on the side of the temperature control furnace 1 with two openings near the one-dimensional displacement mechanism 6 is the insertion depth. At this time, the temperature control furnace 1 with two openings and the temperature control furnace 2 with one opening can simulate different high-temperature measurement zone environments - i.e., high-temperature zones, while the part outside the temperature control furnace 1 with two openings and the temperature control furnace 2 with one opening is the room temperature - i.e., low-temperature zones. This method can increase the ratio of high-temperature zones to low-temperature zones and can provide feedback on the temperature measurement results of the sensing contacts of the temperature sensors under conditions of greater insertion depth.
[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A temperature sensor calibration device capable of simulating temperature environments along a path, characterized in that: The system includes a through-hole temperature control furnace (1) for simulating the temperature environment along the process flow, with the entire furnace chamber of the through-hole temperature control furnace (1) being open through. A single-hole temperature control furnace (2) for simulating the temperature environment of the temperature measurement zone is adjacent to one side of the through-hole temperature control furnace (1). One end of the single-hole temperature control furnace (2) is open and connected to the corresponding open end face of the through-hole temperature control furnace (1), while the other end is closed. The through-hole temperature control furnace (1) and the single-hole temperature control furnace (2) are connected by a second dedicated data cable. 13) and the third dedicated data cable (14) are connected to the computer and testing software (9). The computer and testing software (9) realize the temperature control of two different temperature zones of the open-hole temperature control furnace (1) and the single-open-hole temperature control furnace (2). A one-dimensional displacement mechanism (6) is provided on one side of the open-hole temperature control furnace (1). A clamping assembly (7) is installed on the one-dimensional displacement mechanism (6). The clamping assembly (7) clamps and connects the temperature sensor to be measured (3) and the standard temperature sensor (4). The temperature sensor (3) and the standard temperature sensor (4) penetrate the furnace chamber of the open-hole temperature control furnace (1) and extend into the interior of the single-hole temperature control furnace (2). Their insertion depth can be adjusted by a one-dimensional displacement mechanism (6). The temperature measuring contact (18) on the other end of the temperature sensor (3) and the standard temperature sensor (4) is connected to the temperature acquisition instrument (8). One end of the low-temperature sensor (5) is equipped with a temperature probe (19). The temperature probe (19) is arranged outside the open-hole temperature control furnace (1) and the single-hole temperature control furnace (2) in an area used to simulate the environment along the low-temperature zone. The temperature probe (19) is connected to the temperature display (10) through a fourth dedicated data line. The temperature display (10) is used to display the room temperature in real time and simulate the low-temperature environment through the indoor temperature. The temperature acquisition instrument (8) is connected to the computer and the test software (9) through a first dedicated data line (12).
2. The temperature sensor calibration device for simulating temperature environment along the path according to claim 1, characterized in that: The clamping assembly (7) includes a mounting base fixed on the vertical rod of the one-dimensional displacement mechanism (6). The mounting base has three sets of central holes arranged in a straight line with their axes parallel to each other and aligned with the central axis of the single-hole temperature control furnace (2). The mounting base is also threaded with three sets of fastening bolts (15). The three sets of fastening bolts (15) correspond one-to-one with the three sets of central holes. Each set of fastening bolts (15) includes two bolts, which are respectively set on opposite sides of the central holes.
3. The temperature sensor calibration device for simulating temperature environment along the path according to claim 1, characterized in that: The single-aperture temperature control furnace (2) has an end face (20) at the opening end. A cylindrical temperature equalization component (11) is coaxially arranged inside the furnace chamber of the single-aperture temperature control furnace (2). Its outer diameter matches the inner wall of the furnace chamber of the single-aperture temperature control furnace (2). The inner hole is through and allows the measured temperature sensor (3) and the standard temperature sensor (4) to pass through. The temperature equalization component (11) extends to the end face (20) at the opening end of the single-aperture temperature control furnace (2).
4. A temperature sensor calibration device for simulating a temperature environment along a path, as described in claim 3, is characterized in that: The temperature equalization component (11) is made of Fe-Cr-Al alloy.
5. A temperature sensor calibration device for simulating a temperature environment along a path, as described in claim 1, characterized in that: The temperature sensor (3) being measured has a first temperature sensing contact (16) installed at one end, and the standard temperature sensor (4) has a second temperature sensing contact (17) installed at one end. The first temperature sensing contact (16) and the second temperature sensing contact (17) are placed inside the furnace chamber of the single-aperture temperature-controlled furnace (2), and the first temperature sensing contact (16) and the second temperature sensing contact (17) are located at the center point of the single-aperture temperature-controlled furnace (2).
6. A temperature sensor calibration device for simulating a temperature environment along a path, as described in claim 1, is characterized in that: The standard temperature sensor (4) is a WPRB-1 first-class standard thermocouple, the low-temperature sensor (5) is a PDM483 cold mirror precision dew point meter, and the temperature acquisition instrument (8) is a DTZ-02.