Semi-automatic multi-purpose material level instrument calibration detection equipment and implementation method

Abstract

The invention discloses semi-automatic multi-purpose level meter calibration detection equipment and a semi-automatic multi-purpose level meter calibration detection method. The semi-automatic multi-purpose level meter calibration detection equipment is suitable for a magnetic flap remote transmitter, a magnetostrictive liquid level meter, a floating ball liquid level meter, a radar level meter, an ultrasonic level meter and the like. The device is composed of a bottom plate, an operation control processing unit and a material level simulation device. The operation control processing unit comprises an operation table, an integrated computer, a recorder, a laser range finder and a motor drive adjusting device. The level simulation device comprises a movable reflection target and a sliding hard rail which are used for a non-contact instrument, and a magnetic sliding heavy hammer and a measurement probe rod support which are used for a contact instrument. Through cooperative work of the laser range finder and the motor driving assembly, the equipment can collect 4-20 mA signals in real time, generate a signal curve and carry out visual analysis, single-person efficient operation is achieved, the industrial requirement for high-precision calibration and detection of the material level instrument is met, and the production and maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation detection and calibration equipment, and in particular to a semi-automatic multi-purpose level meter calibration detection equipment and an implementation method thereof. Background Art

[0002] Level measuring instruments are widely used in industrial production to monitor and control liquid level, solid particle level and interface position, ensuring the safety and efficiency of industrial processes. However, existing level measuring instrument calibration and detection equipment still has many limitations.

[0003] At present, most calibration equipment can usually only achieve a single function, such as calibrating the instrument, but cannot be used in combination with the detection function. At the same time, these devices can usually only collect current data, and cannot visualize the signal into a curve graph or bar graph, making it difficult to perform periodic data collection and dynamic observation. In addition, the traditional calibration process mostly relies on manual operation, such as pushing the calibration target or adjusting the position of the rail car. The operation is cumbersome and susceptible to human error, making it difficult to meet high-precision requirements.

[0004] For contact level measuring instruments, such as magnetostrictive level gauges and float level gauges, the traditional calibration method usually uses acrylic tanks to complete the calibration by adjusting the rise and fall of the liquid level in the tank. However, this method has some restrictions on the types of tanks, and the tanks are installed at a high height, which poses certain safety risks. For instruments with long measuring probes, the size of the calibration equipment is further limited and cannot meet diverse needs.

[0005] In the calibration of non-contact level instruments, such as radar and ultrasonic level meters, the measuring range is usually large, ranging from a dozen meters to dozens of meters. The traditional calibration method requires the collaboration of multiple people, one of whom records the data while the other moves the reflective target or calibrates the target. However, this method is inefficient, and the measuring tools are mostly steel tape measures with low accuracy, which is difficult to meet the modern industry's demand for high-precision measurements of ±1mm.

[0006] In addition, the existing detection methods are also insufficient in the instrument maintenance process. Limited by the function of the equipment, it is usually only possible to detect single point data, and it is impossible to collect multi-point data or analyze dynamic change curves through range changes. For companies with high production pressure, traditional aging test benches cannot provide enough detection positions, further increasing the difficulty of instrument detection and maintenance.

[0007] Therefore, the key to solving the above problems is to develop a semi-automatic multi-purpose level instrument calibration and detection equipment that has dual functions of calibration and detection, is easy to operate, can realize calibration and detection of various instruments, and meets high-precision requirements. Summary of the invention

[0008] The present invention aims to provide a semi-automatic multi-purpose level instrument calibration and detection equipment to solve the problems existing in the prior art, such as single calibration function, cumbersome operation, insufficient accuracy and limited detection capability. It can realize high-precision calibration and detection of various level instruments, while improving the operation convenience and use efficiency of the equipment.

[0009] To achieve the above object, the technical solution of the present invention is: a semi-automatic multi-purpose level instrument calibration detection equipment, comprising: a base plate, an operation control processing unit and a simulated level device; the operation control processing unit is arranged at the rear end of the base plate, and comprises: an operating table, an optical breadboard, a computer bracket, a recorder, an integrated computer, an instrument bracket, a wiring terminal, a laser rangefinder and a motor drive adjustment device; The optical breadboard is horizontally arranged at the front end of the operating table, and the plurality of instrument brackets, the plurality of wiring terminals, the plurality of laser rangefinders and the motor drive adjustment device are respectively arranged on the optical breadboard; the computer bracket is vertically fixed to a corner of the operating table, and the recorder and the integrated computer are arranged on the computer bracket; The simulated level device is arranged at the front end of the base plate, and includes: a movable reflective target, a sliding hard rail, a reflective target stopper, a stainless steel traction rope, a drive motor and a traction rope pulley; the two sliding hard rails are arranged on both sides of the base plate, the movable reflective target is arranged on the sliding hard rails, the drive motor is arranged between the two sliding hard rails, and the stainless steel traction rope is respectively connected to the movable reflective target, the drive motor and the traction rope pulley; the two reflective target stoppers are installed at both ends of the sliding hard rail.

[0010] Furthermore, the simulated level device also includes a magnetic sliding weight and a measuring probe rod bracket, and the measuring probe rod bracket is vertically arranged on the bottom plate and arranged opposite to the operating table.

[0011] Furthermore, the level instrument calibration and detection method includes: contact level instrument calibration, non-contact level instrument calibration and detection of contact and non-contact level instruments.

[0012] Further, the calibration of the contact instrument includes the following steps: a. Preparation: Confirm that all equipment and lines are connected correctly, including the recorder, integrated computer, laser rangefinder and motor drive device, fix the contact level meter in the instrument bracket, connect the terminal block to the meter, start the integrated computer, open the host computer software, check the initialization status of the meter and laser rangefinder, and ensure that the equipment is in normal working condition; a. Initial calibration: Adjust the initial position of the laser rangefinder to align it with the magnetic sliding weight hung on the contact instrument measuring probe, ensure that the sliding weight can move freely, adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the contact instrument, feedback the distance between it and the magnetic sliding weight in real time, and input the data into the host computer software to complete the preliminary verification; a. Calibration of sliding weight: Manually operate the magnetic sliding weight to slide along the measuring probe rod. At the same time, the laser rangefinder feeds back the position change data in real time and records it in the recorder. Input the multi-point measurement data into the host computer software, compare and calibrate point by point to ensure that the data of all points are accurate. Repeat the operation to record the data multiple times to ensure consistency. a. Data calibration and verification: Calibrate the data of each measuring point, and compare the distance value fed back by the laser rangefinder with the output signal of the contact meter through the host computer software to check whether there is a deviation. If there is a deviation, perform offset calibration to eliminate the error; a. Complete calibration: Confirm that there is no obvious deviation in the data calibration of all measurement points, record all calibration data, and generate a calibration report. The report content includes the actual measurement value of each point, the calibrated value and the data consistency verification results.

[0013] Furthermore, the calibration of the non-contact instrument includes the following steps: b. Preparation: Fix the non-contact level meter in the meter bracket to ensure that the position is stable; confirm that all the connection lines of the recorder, integrated computer, laser rangefinder and motor drive device are correct; start the integrated computer, open the host computer software, check the initialization status of the equipment, and ensure that it is in normal working condition; b. Initial calibration: Adjust the laser rangefinder to align with the moving reflective target on the sliding hard rail, ensure that the reflective target is firmly fixed and can slide freely, adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the non-contact level meter, feedback the distance data of the reflective target in real time, and input it into the upper computer software to complete the preliminary verification; b. Automatic movement of reflective targets: The motor-driven adjustment device is used to pull the reflective target on the sliding hard rail through the stainless steel traction rope to ensure smooth movement of the reflective target. The laser rangefinder feeds back the movement data of the reflective target in real time and records it in the recorder; b. Multi-point data collection and calibration: Collect feedback data of the reflective target position point by point, and calibrate it through the host computer software to ensure that the data is consistent with the preset value each time, repeatedly record multi-point data, and calibrate point by point to ensure data accuracy and consistency; b. Complete calibration: Confirm that the calibration data of all points are free of deviation, record and generate a calibration report, which includes the actual measurement values, calibration values ​​and consistency verification results.

[0014] Further, the detection of contact and non-contact instruments includes the following steps: c. Preparation: Fix the contact and non-contact level instruments in the instrument brackets respectively to ensure that they are firmly installed and accurately positioned; use wires to correctly connect the wiring terminals to the contact and non-contact level instruments. After confirming that all lines are correct, power on the equipment and check the operating status of auxiliary equipment such as laser rangefinders and recorders to ensure that they are initialized normally; c. Initial testing: Hang the magnetic sliding weight on the measuring probe of the contact level meter, or install the mobile reflective target at the detection position of the non-contact level meter, and move it to any measuring position, observe the distance value fed back by the laser rangefinder in real time, and ensure that it is within the same range as the value displayed by the level meter and there is no obvious deviation; c. Graphical verification: In the recorder, switch the data display mode to curve type. The recorder draws a curve graph based on the measured data. Observe whether the curves of the contact or non-contact level meter and the laser rangefinder are basically overlapped. The higher the curve overlap, the smaller the detection error between the two. c. Dynamic data detection: Use the motor drive device to adjust the position of the magnetic sliding weight or the moving reflective target to simulate the dynamic change process of the liquid level or the material level. The laser rangefinder will provide real-time feedback of the distance value during the change process, and draw a dynamically changing curve in the recorder to observe the continuity and trend of the curve, and compare it with the data change trend displayed by the level instrument to confirm the consistency between the two. c. Static detection and recording: Set a fixed data collection cycle in the recorder to keep the device stationary within the set cycle. The recorder will automatically record data changes and generate a curve chart to analyze whether the curve has fluctuations, power failures or data distortion, ensuring that the measurement signal of the level instrument is stable and reliable; c. Complete the test: Confirm that there are no abnormalities in all dynamic and static detection processes, and that the data curves generated in the recorder are stable and error-free. Complete the detection work, and finally export the detection data and generate a detection report.

[0015] The present invention has the following technical effects: First of all, the equipment uses advanced technologies such as laser rangefinders and motor drives, which can perform high-precision calibration and detection of contact and non-contact level instruments, ensuring the accuracy and consistency of the data and avoiding errors that may be caused by manual operation.

[0016] Secondly, the device integrates the dual functions of calibration and detection, supports the calibration and detection of contact and non-contact level instruments, and can meet the needs of different types of level instruments. The device can not only collect static data, but also monitor dynamic data, generate curves, and provide real-time feedback of measurement data, simplifying the operation process and improving work efficiency.

[0017] Furthermore, the equipment is easy to operate through the use of an integrated computer and host computer software. Users can monitor and control the instrument calibration and testing process through a graphical interface, which reduces the complexity of operation and reduces the occurrence of human errors. The system can also provide clear operating steps in initial calibration, data acquisition, error calibration, etc., ensuring the standardization and accuracy of the process.

[0018] In addition, the equipment uses automated sliding hard rails, traction ropes and motor-driven adjustment devices to ensure the stability of the calibration process and reduce the risk of errors caused by manual operation.

[0019] In general, this equipment is suitable for a variety of level instruments. Especially when traditional calibration methods cannot meet high-precision requirements, this equipment can provide measurements with an accuracy of up to ±1mm, meeting the stringent requirements of modern industry for level instrument calibration. The present invention combines multi-functional, high-precision and automation technology to provide an efficient, reliable and safe semi-automatic level instrument calibration and detection equipment, which greatly improves the measurement accuracy and detection efficiency in the industrial production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 3 It is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 4 A top view of an embodiment of the present invention; Figure 5 This is a flow chart of the calibration steps of the contact type level instrument of the present invention; Figure 6 This is a flow chart of the calibration steps of the non-contact level instrument of the present invention; Figure 7 It is a flow chart of the detection steps of the contact and non-contact level instrument of the present invention; Figure 8 This is a dynamic curve diagram of instrument detection according to an embodiment of the present invention.

[0021] In the figure: 1. bottom plate; 2. operation control processing unit; 2-1. operation table; 2-2. optical breadboard; 2-3. computer bracket; 2-4. recorder; 2-5. integrated computer; 2-6. instrument bracket; 2-7. wiring terminal; 2-8. laser rangefinder; 2-9. motor drive adjustment device; 3. analog level device; 3-1. mobile reflective target; 3-2. sliding hard rail; 3-3. reflective target limiter; 3-4. stainless steel traction rope; 3-5. drive motor; 3-6. traction rope pulley; 3-7. magnetic sliding weight; 3-8. measuring probe bracket; 4. contact level meter; 4-1. measuring probe; 5. non-contact level meter; 5-1. detection range of non-contact level meter. DETAILED DESCRIPTION

[0022] like Figure 1 , Figure 2 As shown, a semi-automatic multi-purpose level instrument calibration detection equipment includes: a base plate 1, an operation control processing unit 2 and a simulated level device 3; the operation control processing unit 2 includes: an operation table 2-1, an optical breadboard; 2-2, a computer bracket 2-3, a recorder 2-4, an integrated computer 2-5, an instrument bracket 2-6, a terminal block 2-7, a laser rangefinder 2-8 and a motor drive adjustment device 2-9; The operating table 2-1 is a rectangular base, and the computer bracket 2-3 is vertically fixed at a corner of the main body of the operating table 2-1, which is used to support and fix the recorder 2-4 and the integrated computer 2-5, so as to facilitate data processing and display during calibration and testing. Specifically, the computer bracket 2-3 is firmly fixed to the corner area of ​​the main body of the operating table 2-1 by bolt connection; the recorder 2-4 and the integrated computer 2-5 are respectively fixed on the computer bracket 2-3; the optical breadboard 2-2 is horizontally fixed to the upper front end of the operating table 2-1; the instrument bracket 2-6, the terminal block 2-7 and the laser rangefinder 2-8 are respectively fixed to the optical breadboard 2-2 by bolts, and the instrument bracket 2-6, the terminal block 2-7 and the laser rangefinder 2-8 can be set to multiple groups, each group is used for a contact level meter or a non-contact level meter; the motor drive adjustment device 2-9 is fixed on the operating table 2-1, located in the middle of the operating table 2-1; it is used to operate the drive motor 3-5; The simulated level device 3 includes: a mobile reflective target 3-1, a sliding hard rail 3-2, a reflective target stopper 3-3, a stainless steel traction rope 3-4, a drive motor 3-5, and a traction rope pulley 3-6 for calibration and detection of non-contact instruments; It also includes a magnetic sliding weight 3-7 and a measuring probe rod bracket 3-8, which are used for calibration and detection of contact instruments.

[0023] Taking the center point of the operating platform 2-1 as the reference axis, the sliding hard rail 3-2 and the driving motor 3-5 are respectively fixed to the bottom plate 1 by expansion bolts; the two sliding hard rails 3-2 are respectively arranged on both sides of the bottom plate 1, and the driving motor 3-5 is arranged between the two sliding hard rails 3-2. The reflective target 3-1 is fixed on the sliding hard rail 3-2, and the front and rear ends of the sliding hard rail 3-2 are respectively installed with reflective target limiters 3-3. The reflective target limiter 3-3 is a safety switch. When the sliding hard rail 3-2 touches the reflective target limiter 3-3, the motor will be triggered to cut off power to prevent the dangerous situation of derailment due to excessive movement; the stainless steel traction rope 3-4 is One end is hung on the driving shaft of the driving motor 3-5, the middle part is fixed to the bottom end of the reflective target 3-1, and the other end is fixed to the bottom plate 1 through the traction rope pulley 3-6 to ensure that the stainless steel traction rope 3-4 is tightened and locked; after power is turned on, the motor drive adjustment device 2-9 can control the driving motor 3-5, including forward, reverse, rotation transmission and emergency stop button, so that the stainless steel traction rope 3-4 can be controlled to drive the mobile reflective target 3-1 to move horizontally forward and backward along the sliding hard rail 3-2, and the moving speed can also be adjusted, so as to simulate the rise or fall of the material level or liquid level in the tank when calibrating or detecting the non-contact instrument; The magnetic sliding weight 3-7 and the measuring probe holder 3-8 are used for calibrating and testing contact instruments. When in use, the measuring probe 4-1 on the instrument can be placed on the measuring probe holder 3-8, and the magnetic sliding weight 3-7 can be hung on the measuring probe 4-1 and moved back and forth to simulate the position change of the object being measured.

[0024] The working principle of the present invention is to use a laser rangefinder and a reflective target or a magnetic sliding component driven by a motor to synchronously collect the data of the instrument under test in the form of a 4-20mA signal and perform visual analysis.

[0025] Example: Figure 3 As shown, the contact level meter 4 and the non-contact level meter 5 can be placed on the corresponding instrument brackets respectively during use; it should be noted that for factory calibration of products, it is necessary to avoid mixing the contact level meter 4 and the non-contact level meter 5. Figure 4 As shown, the contact level meter will enter the detection range 5-1 of the non-contact level meter due to its longer measuring probe, thereby generating false echo signal interference.

[0026] The implementation method of the present invention includes calibration of contact level instrument, calibration of non-contact level instrument and detection of contact and non-contact level instrument; the specific process is as follows: A. The calibration steps of contact level instrument are as follows Figure 5 As shown: a. Preparation Confirm that all equipment and lines are connected correctly, including the recorder, integrated computer, laser rangefinder and motor drive, and connect the terminal block to the contact level meter with wires. Fix the contact level meter in the instrument bracket, place the measuring probe on the measuring probe bracket, and hang the magnetic sliding weight on the measuring probe. Start the integrated computer, open the host computer software, check the initialization status of the instrument and laser rangefinder, and ensure that the equipment is in normal working condition.

[0027] a. Initial calibration Adjust the initial position of the laser rangefinder to align it with the magnetic sliding weight hanging on the measuring probe of the contact level meter. Ensure that the sliding weight can move freely. Adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the contact meter, provide real-time feedback on the distance between it and the magnetic sliding weight, and input the data into the host computer software to complete the preliminary verification.

[0028] a. Calibration of sliding weight Manually operate the magnetic sliding weight to slide along the measuring probe, while the laser rangefinder feeds back the position change data in real time and records it in the recorder. Input the multi-point measurement data into the host computer software, compare and calibrate point by point to ensure that the data of all points are accurate. Repeat the operation and record the data multiple times to ensure consistency.

[0029] a. Data calibration and verification Calibrate the data of each measuring point, and compare the distance value fed back by the laser rangefinder with the output signal of the contact meter through the host computer software to check whether there is any deviation. If there is a deviation, perform offset calibration to eliminate the error.

[0030] a. Complete calibration Confirm that there is no obvious deviation in the data calibration of all measuring points, record all calibration data, and generate a calibration report, which includes the actual measurement value of each point, the calibrated value and the data consistency verification result. At this point, the calibration of the contact level instrument is completed.

[0031] B. The calibration steps of non-contact level instrument are as follows Figure 6 As shown: b. Preparation Fix the non-contact level meter in the meter bracket to ensure stable position. Confirm that all the connection wires of the recorder, integrated computer, laser rangefinder and motor drive are correct. Connect the terminal block to the non-contact level meter with a wire, start the integrated computer, open the upper computer software, check the initialization status of the equipment, and ensure that it is in normal working condition.

[0032] b. Initial calibration Adjust the laser rangefinder to align with the moving reflective target on the sliding hard rail. Ensure that the reflective target is firmly fixed and can slide freely. Adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the non-contact level meter, feedback the distance data of the reflective target in real time, and input it into the host computer software to complete the preliminary verification.

[0033] b. Automatic mobile calibration of reflective targets The motor-driven adjustment device is used to pull the reflective target on the sliding hard rail through the stainless steel traction rope. To ensure the smooth movement of the reflective target, the laser rangefinder feeds back the movement data of the reflective target in real time and records it in the recorder.

[0034] b. Multi-point data collection and calibration Collect feedback data of the reflective target position point by point, and calibrate it through the host computer software to ensure that the data is consistent with the preset value each time. Repeatedly record multi-point data and calibrate point by point to ensure data accuracy and consistency.

[0035] b. Complete calibration Confirm that the calibration data of all points are correct, record and generate a calibration report, which includes the actual measured value, calibration value and consistency verification results. At this point, the calibration of the non-contact level instrument is completed.

[0036] C. The detection steps of contact and non-contact level instruments are as follows Figure 7 As shown: c. Preparation Fix the contact and non-contact level instruments in the instrument brackets respectively, and ensure that they are firmly installed and accurately positioned. Use wires to correctly connect the wiring terminals to the contact and non-contact level instruments. After confirming that all lines are correct, power on the equipment. Check the operating status of auxiliary equipment such as laser rangefinders and recorders to ensure that they are initialized normally.

[0037] c. Initial testing Hang the magnetic sliding weight on the measuring probe of the contact level meter, or install the mobile reflective target at the detection position of the non-contact level meter, and move it to any measuring position. Observe the distance value fed back by the laser rangefinder in real time to ensure that it is within the same range as the value displayed by the level meter and there is no obvious deviation.

[0038] c. Graphical verification As shown in the figure, in the recorder, switch the data display mode to curve type, and the recorder draws a curve graph based on the measured data. Observe whether the curves of the contact or non-contact level meter and the laser rangefinder are basically overlapped in the curve graph. The higher the curve overlap, the smaller the detection error between the two.

[0039] c. Dynamic data detection Use the motor drive device to adjust the position of the magnetic sliding weight or moving reflective target to simulate the dynamic change process of the liquid level or material level. The laser rangefinder feeds back the distance value in real time during the change process and draws a dynamically changing curve in the recorder. Observe the continuity and trend of the curve, and compare it with the data change trend displayed by the level instrument to confirm the consistency of the two.

[0040] c. Static detection and recording Set a fixed data collection cycle in the recorder to keep the device stationary within the set cycle. The recorder will automatically record data changes and generate a curve chart. Analyze whether the curve has fluctuations, power failures or data distortion to ensure that the measurement signal of the level instrument is stable and reliable.

[0041] c. Complete the test Confirm that all dynamic and static detection processes are normal, and the data curves generated in the recorder are stable and error-free, and the detection work is completed. Finally, the detection data is exported and a detection report is generated. The report content includes: measurement data at different positions; curve comparison results of the laser rangefinder and the level meter; analysis conclusions on data continuity and stability.

[0042] At this point, the detection process of the level instrument is completed, ensuring that its measurement data is accurate, the signal is stable, and it is suitable for actual application needs.

Claims

1. A semi-automatic multi-purpose level instrument calibration and detection device, comprising: A base plate (1), an operation control processing unit (2), and a simulated material level device (3); characterized in that the operation control processing unit (2) is arranged at the rear end of the base plate (1), and comprises: an operation table (2-1), an optical breadboard (2-2), a computer bracket (2-3), a recorder (2-4), an integrated computer (2-5), an instrument bracket (2-6), a wiring terminal (2-7), a laser rangefinder (2-8), and a motor drive adjustment device (2-9); The optical breadboard (2-2) is horizontally arranged at the front end of the operating table (2-1); a plurality of instrument brackets (2-6), a plurality of wiring terminals (2-7), a plurality of laser rangefinders (2-8) and a motor drive adjustment device (2-9) are respectively arranged on the optical breadboard (2-2); the computer bracket (2-3) is vertically fixed to a corner of the operating table (2-1); the recorder (2-4) and the integrated computer (2-5) are arranged on the computer bracket (2-3); The simulated level device (3) is arranged at the front end of the base plate (1), and comprises: a movable reflective target (3-1), a sliding hard rail (3-2), a reflective target stopper (3-3), a stainless steel traction rope (3-4), a drive motor (3-5) and a traction rope pulley 3-6; the two sliding hard rails (3-2) are arranged on both sides of the base plate (1), the movable reflective target (3-1) is arranged on the sliding hard rail (3-2), the drive motor (3-5) is arranged between the two sliding hard rails (3-2), the stainless steel traction rope (3-4) is respectively connected to the movable reflective target (3-1), the drive motor (3-5) and the traction rope pulley 3-6; the two reflective target stoppers (3-3) are installed at both ends of the sliding hard rail (3-2).

2. The semi-automatic multi-purpose level meter calibration and detection equipment according to claim 1 is characterized in that: The simulated material level device (3) further comprises a magnetic sliding weight (3-7) and a measuring probe rod bracket (3-8); the measuring probe rod bracket (3-8) is vertically arranged on the bottom plate (1) and is arranged opposite to the operating table (2-1).

3. A method for realizing calibration and detection of a semi-automatic multi-purpose level instrument, based on the semi-automatic multi-purpose level instrument calibration and detection equipment according to claim 2, characterized in that: The level instrument calibration and testing process includes: contact level instrument calibration, non-contact level instrument calibration, and contact and non-contact level instrument testing.

4. The method for realizing calibration detection of a semi-automatic multi-purpose level instrument according to claim 3 is characterized in that: The calibration of the contact instrument comprises the following steps: a. Preparation: Confirm that all equipment and lines are connected correctly, including the recorder, integrated computer, laser rangefinder and motor drive device, fix the contact level meter in the instrument bracket, connect the terminal block to the meter, start the integrated computer, open the host computer software, check the initialization status of the meter and laser rangefinder, and ensure that the equipment is in normal working condition; a2. Initial calibration: Adjust the initial position of the laser rangefinder to align it with the magnetic sliding weight hung on the contact instrument measuring probe, ensure that the sliding weight can move freely, adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the contact instrument, feedback the distance between it and the magnetic sliding weight in real time, and input the data into the host computer software to complete the preliminary verification; a3. Calibration of sliding weight: Manually operate the magnetic sliding weight to slide along the measuring probe rod. At the same time, the laser rangefinder feeds back the position change data in real time and records it in the recorder. Input the multi-point measurement data into the host computer software, compare and calibrate point by point to ensure that the data of all points are accurate. Repeat the operation to record the data multiple times to ensure consistency. a4.Data calibration and verification: Calibrate the data of each measuring point, and compare the distance value fed back by the laser rangefinder with the output signal of the contact meter through the host computer software to check whether there is a deviation. If there is a deviation, perform offset calibration to eliminate the error; a5. Complete calibration: Confirm that there is no obvious deviation in the data calibration of all measurement points, record all calibration data, and generate a calibration report. The report content includes the actual measurement value of each point, the calibrated value and the data consistency verification results.

5. The method for realizing calibration detection of a semi-automatic multi-purpose level instrument according to claim 3 is characterized in that: The calibration of the non-contact instrument comprises the following steps: b1. Preparation: Fix the non-contact level meter in the meter bracket to ensure that the position is stable; confirm that all the connection lines of the recorder, integrated computer, laser rangefinder and motor drive device are correct; start the integrated computer, open the host computer software, check the initialization status of the equipment, and ensure that it is in normal working condition; b2. Initial calibration: Adjust the laser rangefinder to align with the moving reflective target on the sliding hard rail, ensure that the reflective target is firmly fixed and can slide freely, adjust the feedback distance value of the laser rangefinder to be consistent with the unit conversion value of the non-contact level meter, feedback the distance data of the reflective target in real time, and input it into the upper computer software to complete the preliminary verification; b3.Automatic movement of reflective targets: The motor-driven adjustment device is used to pull the reflective target on the sliding hard rail through the stainless steel traction rope to ensure smooth movement of the reflective target. The laser rangefinder feeds back the movement data of the reflective target in real time and records it in the recorder; b4. Multi-point data collection and calibration: Collect feedback data of the reflective target position point by point, and calibrate it through the host computer software to ensure that the data is consistent with the preset value each time, repeatedly record multi-point data, and calibrate point by point to ensure data accuracy and consistency; b5. Complete calibration: Confirm that the calibration data of all points are free of deviation, record and generate a calibration report, which includes the actual measurement values, calibration values ​​and consistency verification results.

6. The method for realizing calibration detection of a semi-automatic multi-purpose level instrument according to claim 3 is characterized in that: The detection of the contact and non-contact instruments comprises the following steps: c1. Preparation: Fix the contact and non-contact level instruments in the instrument brackets respectively to ensure that they are firmly installed and accurately positioned; use wires to correctly connect the wiring terminals to the contact and non-contact level instruments. After confirming that all lines are correct, power on the equipment and check the operating status of auxiliary equipment such as laser rangefinders and recorders to ensure that they are initialized normally; c2. Initial detection: Hang the magnetic sliding weight on the measuring probe of the contact level meter, or install the mobile reflective target at the detection position of the non-contact level meter, and move it to any measuring position, observe the distance value fed back by the laser rangefinder in real time, and ensure that it is within the same range as the value displayed by the level meter and there is no obvious deviation; c3. Graphical verification: In the recorder, switch the data display mode to curve type. The recorder draws a curve graph based on the measured data. Observe whether the curves of the contact or non-contact level meter and the laser rangefinder are basically overlapped. The higher the curve overlap, the smaller the detection error between the two. c4. Dynamic data detection: Use the motor drive device to adjust the position of the magnetic sliding weight or the moving reflective target to simulate the dynamic change process of the liquid level or the material level. The laser rangefinder will provide real-time feedback of the distance value during the change process, and draw a dynamically changing curve in the recorder to observe the continuity and trend of the curve, and compare it with the data change trend displayed by the level instrument to confirm the consistency between the two. c5. Static detection and recording: Set a fixed data collection cycle in the recorder to keep the device stationary within the set cycle. The recorder will automatically record data changes and generate a curve chart to analyze whether the curve has fluctuations, power failures or data distortion, ensuring that the measurement signal of the level instrument is stable and reliable; c6. Complete the test: Confirm that there are no abnormalities in all dynamic and static detection processes, and that the data curves generated in the recorder are stable and error-free. Complete the detection work, and finally export the detection data and generate a detection report.

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