Integrated field calibration device for temperature instrument

Abstract

The invention provides an integrated field calibration device for a temperature instrument. The integrated field calibration device comprises a temperature field calibration device centralized control terminal 1, a low-temperature source 2, a medium-temperature source 3, a high-temperature source 4 and a cable 5. The centralized control terminal 1 of the temperature field calibration device is connected with the low-temperature source 2, the medium-temperature source 3 and the high-temperature source 4 through the cable 5 to form the temperature instrument integrated field calibration device, and the function that one terminal can control a plurality of temperature sources at the same time can be achieved. The invention aims to separate mechanical and electrical parts of a temperature source, eliminate repeated parts and improve reliability; functions of temperature and humidity measurement, insulation resistance measurement and the like required by field temperature calibration are integrated with the temperature source electrical control module; and meanwhile, by matching with upper computer software, on-site calibration can be carried out on the temperature instrument on site, a certificate is automatically generated, a metering identifier is printed, and the on-site calibration efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of instrument metrology calibration, and particularly relates to an integrated on-site calibration device for temperature instruments. Background Technique

[0002] In many fields such as industrial production and scientific research experiments, the accurate measurement of temperature sensors is crucial, and the currently implemented on-site calibration is a key link to ensure its measurement accuracy.

[0003] On-site calibration also faces a series of problems. To improve portability, the temperature source is made small in size, and the electrical module is integrated with the temperature source. In this way, when the temperature source works at a high temperature, the surrounding temperature will have a certain impact on the accuracy of the electrical module, resulting in low measurement and control accuracy. At the same time, the portable temperature source is small in size and can only provide temperature field and electrical signal measurement. When performing on-site calibration, it is also necessary to carry auxiliary measurement temperature and humidity sensors and insulation resistance meters. The carried equipment is scattered and the integration degree is not high, making on-site operation inconvenient. After the instrument is calibrated, the equipment administrator confirms according to the measurement results and then prints the metrology label and pastes it on the instrument to be calibrated. The process is complex and the metrology label cannot be printed in time according to the calibration results on-site.

[0004] Therefore, based on the problems such as the low integration accuracy of the electrical module and the mechanical module, the low integration degree of on-site calibration equipment, and the inability to print metrology labels on-site that appear in the above engineering applications, the invention proposes an integrated on-site calibration device for temperature instruments. By integrating the temperature source control and measurement module into the centralized control terminal, the mechanical and electrical parts are separated to improve reliability; and the insulation resistance and temperature and humidity measurement modules are integrated, eliminating the need to carry other auxiliary equipment externally, further improving the integration degree of the device; at the same time, the instrument metrology label printing and scanning equipment are integrated to enable on-site printing of metrology labels, and all on-site calibration work of temperature instruments can be completed on-site, streamlining the process and improving efficiency. Summary of the Invention

[0005] The purpose of the invention is to provide an integrated on-site calibration device for temperature instruments, which separates the mechanical and electrical parts of the temperature source, eliminates redundant components, and improves reliability; integrates functions such as temperature and humidity measurement and insulation resistance measurement required for on-site temperature calibration with the electrical control module of the temperature source; and at the same time, supporting upper computer software can realize on-site calibration of temperature instruments, automatic generation of certificates, and printing of metrology labels on-site, improving on-site calibration efficiency.

[0006] The invention includes: a centralized control terminal of the temperature on-site calibration device, a low-temperature source, a medium-temperature source, a high-temperature source, and a cable. Combined with the attached Figure 1The centralized control terminal of the temperature on-site calibration device is connected to three temperature sources, namely the low-temperature source, the medium-temperature source, and the high-temperature source, through cables, forming an integrated on-site calibration device for temperature instruments, which can realize the function of controlling multiple temperature sources by one terminal.

[0007] An integrated on-site calibration device for temperature instruments can cover the calibration requirements of instruments from -30°C to 600°C. At the same time, measurement terminals are integrated on the low-temperature source, medium-temperature source, and high-temperature source. The electrical signals of the instrument to be calibrated are directly connected to the measurement terminals nearby, with short wiring and convenient operation. The temperature source is connected to the centralized control terminal through a cable, and the length of the cable can be flexibly configured. The distance between the centralized control terminal and the temperature source can be adjusted according to the on-site calibration space, with high flexibility. The temperature source has a large power and high current. To reduce electrical signal interference, the power line and the control line are separated.

[0008] The centralized control terminal of the temperature on-site calibration device includes: the centralized control terminal chassis, the display screen, the front cover plate of the centralized control terminal, the keyboard, the touchpad, the printer, the barcode scanner, the ventilation opening, the fan, the lock assembly, the small cover plate, the large cover plate, the handle, the foot pad, the input power interface, the input power switch, the control interface, the power interface, the insulation resistance measurement interface, the temperature and humidity measurement interface, the USB interface, the HDMI port, the temperature source control and measurement module, and the upper computer and auxiliary module.

[0009] Combined with the attached Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The components of the centralized control terminal 1 of the temperature on-site calibration device are assembled as follows:

[0010] Attached Figure 2 : The outer structure is composed of the centralized control terminal chassis and the front cover plate of the centralized control terminal. The display screen is installed at the front of the centralized control terminal chassis, providing a display platform for on-site calibration. The keyboard and the touchpad are embedded in the front cover plate of the centralized control terminal to realize signal input. The printer and the barcode scanner are installed on the left side of the centralized control terminal chassis. The printer is installed below the barcode scanner. Integrating the printer and the barcode scanner can perform label printing on-site, avoiding problems such as long cycle times that require a report to be issued and confirmed before labeling. All calibration work can be completed on-site. The ventilation opening is installed near the bottom of the rear part, and the fan is installed on the upper part of the chassis to realize forced ventilation. It can be both an intake fan or an exhaust fan, or one intake fan and one exhaust fan to realize the ventilation and cooling of the electrical equipment of the centralized control terminal. The lock assembly realizes the closing and opening of the centralized control terminal chassis and the front cover plate of the centralized control terminal.

[0011] Attached Figure 3: On the right side of the centralized control terminal, there are small covers and large covers. The small cover mainly protects the interfaces of auxiliary equipment, and the large cover mainly protects the interfaces of 3 temperature sources. The handle is the handle for moving the centralized control terminal on-site, which provides convenience during the handling of the on-site calibration device; the foot pads support the centralized control terminal, and at the same time, by adjusting the height of the foot pads, different layout angles of the on-site calibration device can be achieved, facilitating the operation and viewing of on-site personnel. The input power interface and input power switch are the power input interface and switch button for rectifying the temperature on-site calibration device.

[0012] Appendix Figure 4 : The control interface and power interface are the power input and temperature control interfaces of the temperature source, realizing the temperature control of the temperature source and the acquisition and communication of electrical signals. The insulation resistance measurement interface, temperature and humidity measurement interface, USB interface, and HDMI interface respectively realize the measurement of the insulation resistance of the calibrated instrument, the communication of USB devices, and the connection interface of the external display.

[0013] Appendix Figure 5 : The temperature source control and measurement module realizes the control of the temperature rise and fall of the low-temperature source, medium-temperature source, and high-temperature source, as well as the measurement of the current, resistance, and voltage signals output by the calibrated instrument. Different temperature fields are realized according to the on-site calibration method, and the output value of the calibrated instrument is measured or read to complete the calibration of the on-site instrument. At the same time, the module is set in the centralized control terminal instead of the traditional temperature source, avoiding the influence of the temperature of the temperature source at high temperatures on the performance of the module, affecting its control and measurement accuracy, and further improving the reliability of the entire on-site calibration device. The host computer and auxiliary module are the functional modules of the host computer and the general power module, realizing the normal operation of the host computer of the centralized control terminal.

[0014] The low-temperature source, medium-temperature source, and high-temperature source are all composed of a temperature field module, measurement terminals, switches, control interfaces, and power interfaces, realizing the standardized and universal design of the interfaces, which is convenient for maintenance and support.

[0015] The low-temperature source includes: a low-temperature source temperature field module, low-temperature source measurement terminals, low-temperature source switches, low-temperature source control interfaces, and low-temperature source power interfaces.

[0016] The medium-temperature source includes: a medium-temperature source temperature field module, medium-temperature source measurement terminals, medium-temperature source switches, medium-temperature source control interfaces, and medium-temperature source power interfaces.

[0017] The high-temperature source includes: a high-temperature source temperature field module, high-temperature source measurement terminals, high-temperature source switches, high-temperature source control interfaces, and high-temperature source power interfaces.

[0018] Combined with Appendix Figure 6 , Figure 7 , Figure 8 The assembly of each component of the low-temperature source, medium-temperature source, and high-temperature source is as follows:

[0019] AppendixFigure 6 : The low-temperature source mainly consists of a low-temperature source temperature field module, low-temperature source measurement terminals, a low-temperature source switch, a low-temperature source control interface, and a low-temperature source power interface. The low-temperature source measurement terminals are connected nearby to the signal output interface of the instrument under calibration inserted into the low-temperature source through wires. There is no need to connect the instrument under calibration to the measuring equipment. The on-site calibration wiring is convenient and clear, facilitating operation. The low-temperature source control interface and low-temperature source power interface are connected to the control interface and power interface through cables, realizing the connection between the centralized control terminal and the temperature source. The centralized control terminal can be connected to the temperature source over a long distance, increasing the flexibility of on-site calibration.

[0020] Appendix Figure 7 : The medium-temperature source mainly consists of a medium-temperature source temperature field module, medium-temperature source measurement terminals, a medium-temperature source switch, a medium-temperature source control interface, and a medium-temperature source power interface. The medium-temperature source measurement terminals are connected nearby to the signal output interface of the instrument under calibration inserted into the medium-temperature source through wires. There is no need to connect the instrument under calibration to the measuring equipment. The on-site calibration wiring is convenient and clear, facilitating operation. The medium-temperature source control interface and medium-temperature source power interface are connected to the control interface and power interface through cables, realizing the connection between the centralized control terminal and the temperature source. The centralized control terminal can be connected to the temperature source over a long distance, increasing the flexibility of on-site calibration.

[0021] Appendix Figure 8 : The high-temperature source mainly consists of a high-temperature source temperature field module, high-temperature source measurement terminals, a high-temperature source switch, a high-temperature source control interface, and a high-temperature source power interface. The high-temperature source measurement terminals are connected nearby to the signal output interface of the instrument under calibration inserted into the high-temperature source through wires. There is no need to connect the instrument under calibration to the measuring equipment. The on-site calibration wiring is convenient and clear, facilitating operation. The high-temperature source control interface and high-temperature source power interface are connected to the control interface and power interface through cable 5, realizing the connection between the centralized control terminal and the temperature source. The centralized control terminal can be connected to the temperature source over a long distance, increasing the flexibility of on-site calibration.

[0022] The present invention has the following characteristics:

[0023] First, for the integrated on-site calibration device for temperature instruments of the present invention, the mechanical and electrical parts of the low-temperature source, medium-temperature source, and high-temperature source are separated. The electrical control module is integrated in the centralized control terminal, and the display screen and buttons on the traditional temperature source are cancelled, with a concise structure and improved reliability.

[0024] Second, for the integrated on-site calibration device for temperature instruments of the present invention, an insulation resistance meter and a temperature and humidity measurement module are integrated, and the auxiliary equipment required for temperature instrument calibration is integrated, with a high degree of integration.

[0025] Third, for the integrated on-site calibration device for temperature instruments of the present invention, a barcode scanner and a label printer are integrated, and metrological identification printing and label information reading can be carried out on-site, completing the on-site calibration work at one time and improving the on-site calibration efficiency.

[0026] Finally, the integrated on-site calibration device for temperature instruments of the present invention integrates a host computer software, which can program control the output and measurement modules on-site, automatically collect and record data, and can automatically generate reports according to a preset template, with a high degree of informatization. Description of the Drawings

[0027] Attached Figure 1 is a schematic diagram of the overall integrated on-site calibration device for temperature instruments of the present invention

[0028] Attached Figure 2 is a schematic diagram of the centralized control terminal of the integrated on-site calibration device for temperature instruments of the present invention

[0029] Attached Figure 3 is a schematic diagram of the centralized control terminal (with the cover plate closed) of the integrated on-site calibration device for temperature instruments of the present invention

[0030] Attached Figure 4 is a schematic diagram of the centralized control terminal (with the cover plate open) of the integrated on-site calibration device for temperature instruments of the present invention

[0031] Attached Figure 5 is a schematic diagram of the internal structure of the centralized control terminal of the integrated on-site calibration device for temperature instruments of the present invention

[0032] Attached Figure 6 is a schematic diagram of the low-temperature source of the integrated on-site calibration device for temperature instruments of the present invention

[0033] Attached Figure 7 is a schematic diagram of the medium-temperature source of the integrated on-site calibration device for temperature instruments of the present invention

[0034] Attached Figure 8 is a schematic diagram of the high-temperature source of the integrated on-site calibration device for temperature instruments of the present invention

[0035] Wherein:

[0036] 1 - Temperature on-site calibration device centralized control terminal, 2 - Low-temperature source, 3 - Medium-temperature source, 4 - High-temperature source, 5 - Cable, 1_1 - Centralized control terminal chassis, 1_2 - Display screen, 1_3 - Centralized control terminal front cover plate, 1_4 - Keyboard, 1_5 - Touchpad, 1_6 - Printer, 1_7 - Barcode scanner, 1_8 - Vent, 1_9 - Fan, 1_10 - Locking component, 1_11 - Small cover plate, 1_12 - Large cover plate, 1_13 - Handle, 1_14 - Foot pad, 1_15 - Input power interface, 1_16 - Input power switch, 1_17 - Control interface, 1_18 - Power interface, 1_19 - Insulation resistance measurement interface, 1_20 - Temperature and humidity measurement interface, 1_21 - USB interface, 1_22 - HDMI port, 1_23 - Temperature source control and measurement module, 1_24 - Host computer and auxiliary module, 2_1 - Low-temperature source temperature field module, 2_2 - Low-temperature source measurement terminal, 2_3 - Low-temperature source switch, 2_4 - Low-temperature source control interface, 2_5 - Low-temperature source power interface, 3_1 - Medium-temperature source temperature field module, 3_2 - Medium-temperature source measurement terminal, 3_3 - Medium-temperature source switch, 3_4 - Medium-temperature source control interface, 3_5 - Medium-temperature source power interface, 4_1 - High-temperature source temperature field module, 4_2 - High-temperature source measurement terminal, 4_3 - High-temperature source switch, 4_4 - High-temperature source control interface, 4_5 - High-temperature source power interface Detailed implementation manners

[0037] An integrated on-site calibration device for temperature instruments according to the present invention includes: a temperature on-site calibration device centralized control terminal 1, a low-temperature source 2, a medium-temperature source 3, a high-temperature source 4, and a cable 5. Combining with the attached Figure 1 The temperature on-site calibration device centralized control terminal 1 is connected to a total of 3 temperature sources, namely the low-temperature source 2, the medium-temperature source 3, and the high-temperature source 4, through the cable 5 to form an integrated on-site calibration device for temperature instruments, which can realize the function of simultaneously controlling multiple temperature sources by one terminal.

[0038] The temperature on-site calibration device centralized control terminal 1 includes: a centralized control terminal chassis 1_1, a display screen 1_2, a centralized control terminal front cover plate 1_3, a keyboard 1_4, a touchpad 1_5, a printer 1_6, a barcode scanner 1_7, a vent 1_8, a fan 1_9, a locking component 1_10, a small cover plate 1_11, a large cover plate 1_12, a handle 1_13, a foot pad 1_14, an input power interface 1_15, an input power switch 1_16, a control interface 1_17, a power interface 1_18, an insulation resistance measurement interface 1_19, a temperature and humidity measurement interface 1_20, a USB interface 1_21, an HDMI port 1_22, a temperature source control and measurement module 1_23, and a host computer and auxiliary module 1_24.

[0039] The low-temperature source 2, the medium-temperature source 3, and the high-temperature source 4 are all composed of a temperature field module, a measurement terminal, a switch, a control interface, and a power supply interface, realizing standardized and generalized interface design for convenient maintenance and support.

[0040] The low-temperature source 2 includes: a low-temperature source temperature field module 2_1, a low-temperature source measurement terminal 2_2, a low-temperature source switch 2_3, a low-temperature source control interface 2_4, and a low-temperature source power supply interface 2_5.

[0041] The medium-temperature source 3 includes: a medium-temperature source temperature field module 3_1, a medium-temperature source measurement terminal 3_2, a medium-temperature source switch 3_3, a medium-temperature source control interface 3_4, and a medium-temperature source power supply interface 3_5.

[0042] The high-temperature source 4 includes: a high-temperature source temperature field module 4_1, a high-temperature source measurement terminal 4_2, a high-temperature source switch 4_3, a high-temperature source control interface 4_4, and a high-temperature source power supply interface 4_5.

[0043] The specific installation and implementation steps of an integrated on-site calibration device for temperature instruments are as follows:

[0044] a) Install the display screen 1_2 at the front of the centralized control terminal chassis 1_1.

[0045] b) Install the printer 1_6 and the barcode scanner 1_7 on the left side of the centralized control terminal chassis 1_1.

[0046] c) Install the ventilation opening 1_8 near the bottom of the rear part and install the fan 1_9 on the upper part of the chassis.

[0047] d) Embed the keyboard 1_4 and the touchpad 1_5 in the front cover plate 1_3 of the centralized control terminal.

[0048] e) Install the input power supply interface 1_15 and the input power supply switch 1_16 at the lower right part of the centralized control terminal, install the control interface 1_17 and the power supply interface 1_18 at the rear side, and the large cover plate 1_12 can protect the control interface 1_17 and the power supply interface 1_18 in the closed state. Install the insulation resistance measurement interface 1_19, the temperature and humidity measurement interface 1_20, the USB interface 1_21, and the HDMI port 1_22 at the front part, and the small cover plate 1_11 can protect in the closed state. When not connected to the temperature source, the centralized control terminal in the closed state is an integral whole.

[0049] f) The temperature source control and measurement module 1_23 and the upper computer and auxiliary module 1_24 are installed inside the centralized control terminal to realize the control of the temperature source, the electrical signal measurement of the instrument to be calibrated, and the hardware support for the operation of the upper computer. Different modules can be manufactured by different methods to achieve the above functions. g) Install the latch assembly 1_10 on the centralized control terminal chassis to enable the closing and opening of the front cover plate 1_3 of the centralized control terminal.

[0050] h) The low-temperature source temperature field module 2_1, low-temperature source measurement terminal 2_2, low-temperature source switch 2_3, low-temperature source control interface 2_4, and low-temperature source power interface 2_5 form a low-temperature source, providing a temperature field from -30°C to 95°C.

[0051] i) The medium-temperature source temperature field module 3_1, medium-temperature source measurement terminal 3_2, medium-temperature source switch 3_3, medium-temperature source control interface 3_4, and medium-temperature source power interface 3_5 form a medium-temperature source, providing a temperature field from 50°C to 300°C.

[0052] j) The high-temperature source temperature field module 4_1, high-temperature source measurement terminal 4_2, high-temperature source switch 4_3, high-temperature source control interface 4_4, and high-temperature source power interface 4_5 form a high-temperature source, providing a temperature field from 50°C to 600°C.

[0053] k) The temperature on-site calibration device centralized control terminal 1 is connected to the low-temperature source 2, medium-temperature source 3, and high-temperature source 4 through the cable 5 respectively, and can realize the function of a single terminal controlling multiple temperature sources simultaneously.

[0054] The advantages of the temperature instrument integrated on-site calibration device of the present invention are as follows: it integrates an insulation resistance meter and a temperature and humidity measurement module, integrates the auxiliary calibration equipment required for calibrating temperature instruments, and has a high degree of integration; it integrates a barcode scanner and a label printer, can perform metrological identification printing and label information reading on-site, completes the on-site calibration work at one time, reduces the work process of separately filling in metrological standards required for traditional calibration, and improves the on-site calibration efficiency; it integrates a host computer software, can perform program control on the output and measurement modules on-site, automatically collect and record data, and can automatically generate reports according to a preset template, with a high degree of informatization; the temperature source separates the mechanical and electrical parts, and the electrical control module is integrated in the centralized control terminal, cancels the display screen and buttons on the traditional temperature source, has a concise structure, and improves reliability.

Claims

1. An integrated field calibration device for temperature instruments, characterized in that: The device comprises a centralized control terminal (1) of a temperature field calibration device, a low temperature source (2), a medium temperature source (3), and a high temperature source (4); the centralized control terminal (1) is connected to the low temperature source (2), the medium temperature source (3), and the high temperature source (4) via a cable (5), so that the centralized control terminal can control multiple temperature sources simultaneously; The centralized control terminal (1) of the temperature field calibration device comprises: a centralized control terminal chassis (1_1), a display screen (1_2), a front cover plate of the centralized control terminal (1_3), a keyboard (1_4), a touch pad (1_5), a printer (1_6), a barcode scanner (1_7), a vent (1_8), a fan (1_9), a locking assembly (1_10), a small cover plate (1_11), a large cover plate (1_12), a handle (1_13), a foot pad (1_14), an input power interface (1_15), an input power switch (1_16), a control interface (1_17), a power interface (1_18), an insulation resistance measurement interface (1_19), a temperature and humidity measurement interface (1_20), a USB interface (1_21), an HDMI port (1_22), a temperature source control and measurement module (1_23), and a host computer and auxiliary modules (1_24); The low temperature source (2) comprises: a low temperature source temperature field module (2_1), a low temperature source measurement terminal (2_2), a low temperature source switch (2_3), a low temperature source control interface (2_4), and a low temperature source power supply interface (2_5); The medium temperature source (3) comprises: a medium temperature source temperature field module (3_1), a medium temperature source measurement terminal (3_2), a medium temperature source switch (3_3), a medium temperature source control interface (3_4), and a medium temperature source power supply interface (3_5); The high temperature source (4) comprises: a high temperature source temperature field module (4_1), a high temperature source measurement terminal (4_2), a high temperature source switch (4_3), a high temperature source control interface (4_4), and a high temperature source power supply interface (4_5).

2. The integrated field calibration device for temperature instruments according to claim 1, characterized in that: The temperature source control and measurement module (1_23) is integrated in the centralized control terminal (1) of the temperature field calibration device, so as to realize independent design of the mechanical structure and electrical structure of the temperature source; A printer (1_6) and a barcode scanner (1_7) are designed on one side of the centralized control terminal (1) of the temperature field calibration device. The printer (1_6) is below the barcode scanner (1_7) and can realize label printing and barcode scanning. The temperature field calibration device centralized control terminal (1) integrates insulation resistance and temperature and humidity measurement modules, and can measure the insulation resistance of the instrument to be calibrated and the temperature and humidity of the environment.

3. The integrated field calibration device for temperature instruments according to claim 1, characterized in that: It can cover the calibration requirements of instruments ranging from -30°C to 600°C; at the same time, the low-temperature source (2), the medium-temperature source (3), and the high-temperature source (4) are integrated with measuring terminals, and the electrical signals of the calibrated instrument are directly connected to the measuring terminals nearby, with short wiring and convenient operation. The low-temperature source (2), the medium-temperature source (3), and the high-temperature source (4) are connected to the centralized control terminal (1) of the temperature field calibration device through a cable (5), and the length of the cable can be flexibly configured. The distance between the centralized control terminal and the temperature source can be adjusted according to the field calibration space, which is highly flexible; the temperature source has high power and high current, and in order to reduce the interference of the electrical signal, the power line and the control line are separated.

4. The integrated field calibration device for temperature instruments according to claim 1, characterized in that: The bottom of the temperature field calibration device centralized control terminal (1) is provided with four foot pads (1_14), and the height of the foot pads can be adjusted independently; the top of the temperature field calibration device centralized control terminal (1) is provided with two fans (1_9), which can be suction or exhaust fans at the same time, or one suction and one exhaust.

5. The integrated field calibration device for temperature instruments according to claim 1, characterized in that: The specific installation and implementation steps of the temperature instrument integrated field calibration device are as follows: a) installing the display screen (1_2) on the front of the centralized control terminal cabinet (1_1); b) Install the printer (1_6) and barcode scanner (1_7) on the left side of the centralized control terminal chassis (1_1); c) Install the vent (1_8) near the rear bottom and the fan (1_9) on the upper part of the chassis; d) Embedding the keyboard (1_4) and the touch panel (1_5) on the front cover (1_3) of the centralized control terminal; e) The input power interface (1_15) and the input power switch (1_16) are installed at the lower right part of the centralized control terminal, the control interface (1_17) and the power interface (1_18) are installed at the rear side, and the large cover plate (1_12) can realize the protection function of the control interface (1_17) and the power interface (1_18) in the closed state; the insulation resistance measurement interface (1_19), the temperature and humidity measurement interface (1_20), the USB interface (1_21), and the HDMI port (1_22) are installed at the front part, and the small cover plate (1_11) can realize the protection function in the closed state; when not connected to the temperature source, the centralized control terminal is a whole in the closed state; f) The temperature source control and measurement module (1_23), the host computer and the auxiliary module (1_24) are installed in the centralized control terminal to realize the control of the temperature source, the measurement of the electrical signal of the calibrated instrument and the hardware support of the host computer. Different methods can be used to manufacture different modules to realize the above functions; g) The lock assembly (1_10) is installed on the centralized control terminal chassis to achieve closing and opening with the centralized control terminal front cover (1_3); h) Low temperature source temperature field module (2_1), low temperature source measurement terminal (2_2), low temperature source switch (2_3,) The low temperature source control interface (2_4) and the low temperature source power interface (2_5) form a low temperature source, providing a temperature field of -30°C to 95°C; i) A medium temperature source temperature field module (3_1), a medium temperature source measurement terminal (3_2), a medium temperature source switch (3_3), a medium temperature source control interface (3_4), and a medium temperature source power interface (3_5) constitute a medium temperature source, providing a temperature field of 50° C. to 300° C.; j) A high temperature source temperature field module (4_1), a high temperature source measurement terminal (4_2), a high temperature source switch (4_3), a high temperature source control interface (4_4), and a high temperature source power interface (4_5) constitute a high temperature source, providing a temperature field of 50° C. to 600° C.; k) The centralized control terminal (1) of the temperature field calibration device is respectively connected to the low temperature source (2), the medium temperature source (3), and the high temperature source (4) through cables (5).

Images