1、 Preparation before use

1. Instrument inspection
   • Visual inspectionCheck if the casing of the tester is damaged, cracked, or deformed to ensure that the appearance of the instrument is intact and undamaged. For example, if there are cracks in the casing, it may affect the normal operation of electronic components inside the instrument, and even lead to inaccurate test results.
   • Component inspectionCheck whether the sensors, connecting wires, display screen and other components of the tester are complete and intact, and whether the connections are firm. For example, sensors are the core components of testers, and if they become loose or damaged, it will directly affect the accuracy of test data.
   • Battery/power checkIf the tester is powered by a battery, check if the battery is fully charged; If using an external power supply, ensure that the power connection is stable and the voltage meets the requirements of the instrument. Insufficient battery or unstable power supply may cause the instrument to suddenly shut down during the testing process, affecting the testing progress and results.
2. environment check
   • Temperature and humidityEnsure that the testing environment meets the operating temperature and humidity range specified by the instrument. Generally speaking, the working temperature range of the anti pinch force tester is -10 ℃ -50 ℃, and the relative humidity does not exceed 85%. If the ambient temperature is too high or too low, and the humidity is too high, it may affect the performance of the instrument and the accuracy of the test results. For example, high temperatures may cause electronic components inside the instrument to overheat and malfunction; Excessive humidity may cause the sensor to become damp, affecting its sensitivity.
   • site levelingChoose a flat and stable testing site, avoiding testing on sloping, shaking, or cluttered surfaces. An uneven site may cause the testing instrument to shake during the testing process, affecting the stability of the test data.
3. Preparation of tested equipment
   • Clean the tested areaClean the anti pinch parts of the tested equipment to remove dust, oil stains, and other impurities, ensuring that the testing surface is clean and smooth. Impurities may affect the contact between the sensor and the tested area, resulting in inaccurate test results.
   • Equipment status checkCheck if the tested device is in normal working condition,noneAbnormal situation. For example, if the door of the tested device is deformed or stuck, it may affect the test results of the anti pinch force.

2、 Test operation

1. instrument calibration
   • periodic calibrationRegularly calibrate the tester according to the requirements of the instrument manual. Generally speaking, it is recommended to calibrate every six months or one year to ensure the accuracy of test results. Calibration can be performed using standard weights or other specialized calibration equipment.
   • Calibration RecordAfter each calibration, a calibration record should be kept, including calibration date, calibration results, and other information. Calibration records can serve as a reference for instrument performance and also aid in tracing issues when they arise.
2. Correct installation and placement
   • Sensor installationInstall the sensor of the tester correctly on the anti pinch part of the tested equipment, ensuring that the sensor is in close contact with the tested part without any gaps. When installing, pay attention to the direction and position of the sensor to avoid installation errors that may affect the test results. For example, for anti pinch force testing of doors and windows, sensors should be installed in areas where the doors and windows may get stuck to the human body when they are closed.
   • Instrument placementPlace the tester host in a stable and safe location to avoid collisions or interference during the testing process. The placement of the host should be convenient for operators to observe the display screen and perform operations.
3. Test parameter settings
   • Unit SettingsSet appropriate testing units as needed, such as Newton (N), kilogram force (kgf), etc. Ensure that the requirements and relevant standards of the testing unit are consistent with those of the tested equipment.
   • Test mode selectionSelect appropriate testing modes based on the characteristics and testing requirements of the tested equipment, such as static testing, dynamic testing, etc. Different testing modes are suitable for different testing scenarios, and selecting the appropriate mode can improve the accuracy and reliability of testing.
4. Test process control
   • Slowly apply forceDuring the testing process, force should be applied slowly and evenly to avoid sudden or excessive force. Sudden exertion may result in inaccurate test data and even damage to the tested equipment or tester. For example, when testing the anti pinch force of doors and windows, the doors and windows should be slowly closed and the reading changes of the tester should be observed.
   • Record test dataTimely and accurately record test data during the testing process. It can record information such as maximum clamping force value and clamping force variation curve. When recording data, attention should be paid to the integrity and accuracy of the data to avoid omissions, errors, and other situations.
   • Take the average of multiple testsTo improve the accuracy of test results, it is recommended to conduct multiple tests on the same tested area and take the average as the final test result. Multiple tests can reduce the impact of random errors and make the test results closer to the true values.

3、 Post test processing

1. Data organization and analysis
   • data organizationOrganize the data recorded during the testing process into tables or charts for easy analysis and comparison. For example, a curve graph of clamping force variation can be created to visually display the changes in clamping force over time.
   • Result AnalysisAnalyze and evaluate the anti pinch performance of the tested equipment based on test data and relevant standards. Determine whether the anti pinch force of the tested equipment meets safety requirements. If it does not meet the requirements, analyze the reasons and propose improvement measures.
2. Instrument maintenance and upkeep
   • Cleaning equipmentAfter the test is completed, clean the testing instrument in a timely manner to remove dust, stains, etc. on the surface of the instrument. When cleaning, pay attention to using soft fabrics to avoid scratching the instrument casing.
   • Storage of instrumentsStore the tester in a dry, ventilated, and non corrosive gas environment to avoid moisture, rust, or damage to the instrument. When storing, pay attention to placing the instrument in a dedicated packaging box or instrument cabinet to avoid collision and compression.
3. report writing
   • Report contentWrite a detailed test report based on the test results and analysis. The report should include the purpose of testing, testing equipment, testing methods, testing data, analysis of testing results, conclusions, and recommendations.
   • Report ReviewAfter the completion of the test report, it should be reviewed to ensure the accuracy, completeness, and standardization of the report content. Auditors should possess relevant professional knowledge and experience to ensure the quality of reports.

4、 Safety precautions

1. Operator safety
   • Wear protective equipmentDuring testing, operators should wear necessary protective equipment such as gloves, goggles, etc. to avoid injury during the testing process. For example, wearing gloves can prevent scratches on the hands when testing sharp or sharp tested equipment.
   • Follow the operating proceduresOperators should strictly follow the operating procedures of the tester and must not operate in violation of regulations. During the operation, it is important to maintain concentration and avoid safety accidents caused by carelessness.
2. Equipment safety
   • Avoid overloadWhen using the tester, be careful not to exceed the range of the instrument to avoid damaging it. For example, if the range of the tester is 0-500N, the applied force during testing should not exceed 500N.
   • 防止短路When connecting the power supply and sensors of the tester, be careful to prevent short circuits from occurring. Short circuits may cause damage to instruments or trigger safety accidents such as fires.