The programmable temperature rise cycle testing machine can accurately control the temperature, and its temperature control accuracy can usually reach ± 0.5 ℃ or even higher. This enables it to accurately simulate various complex temperature environments, whether they are high temperatures, low temperatures, or special situations with rapid temperature changes. For example, in the testing of automotive electronic components, it is necessary to simulate the high temperature environment inside the engine compartment and the low temperature environment in cold weather outdoors. This testing machine can accurately reproduce these temperature conditions, providing reliable basis for product performance evaluation.

It can not only simulate a single high or low temperature environment, but also achieve temperature rise cycling changes. It is possible to simulate various complex environmental conditions, such as seasonal temperature changes and temperature fluctuations caused by frequent device start-up and shutdown, according to the program set by the user. This ability is crucial for testing the adaptability, reliability, and durability of products under different temperature changes. For example, outdoor communication equipment may experience complex situations such as temperature differences between day and night, temperature changes in different seasons, and occasional high temperature exposure during actual use. The programmable temperature rise cycle testing machine can simulate these environments well and help researchers discover possible problems with the product.

Precautions for using programmable temperature rise cycle testing machine:

1. Precautions before the experiment:

-Environmental and site requirements: The test area should be well ventilated, away from flammable, explosive materials and corrosive gases. The ambient temperature should usually be controlled at 25 ℃± 5 ℃. The equipment should be placed on a flat and stable ground, reliably grounded, and avoid sharing the same power circuit with other high-power equipment.

-Equipment status verification: Check whether the power supply voltage matches the rated voltage of the equipment, whether the insulation layer of the power line is not damaged, and whether the plug and socket are in good contact; Confirm that the calibration of the load module, temperature sensor, and data acquisition system is within the valid period; The cross-sectional area of the test circuit wires should match the rated current.

-Sample pretreatment and installation: The sample must meet the testing standard requirements, have no damage or deformation in appearance, and the metal contacts must not be oxidized; Ensure that the sample is firmly fixed during installation to avoid poor contact or sensor detachment caused by vibration.

2. Operating procedures during the experiment:

-Parameter setting and circuit connection: Strictly set the load parameters according to the rated value of the sample, and prohibit over range testing; When wiring, cut off the power first and operate in the correct order to ensure that the live wire, neutral wire, and ground wire are connected correctly, and the wiring terminals are tightened without looseness; The temperature sensor needs to be closely attached to the testing point.

-Real time monitoring and exception handling: After the experiment is started, run the equipment with no load or low load to observe if it is normal, and then gradually increase it to the rated load; Real time monitoring of temperature curves and load parameters throughout the process. If any abnormal situations occur, immediately cut off the power supply for inspection; It is prohibited to touch high-temperature components during the experiment, and insulated gloves must be worn for operation.

-Safety protection measures: Warning signs should be set up in the testing area during equipment operation, and unrelated personnel are not allowed to enter; For high current or high power testing, overload protection devices and fire extinguishing equipment should be equipped; If the test sample is made of flammable and explosive materials, it needs to be conducted in a fume hood.

3. Precautions after the experiment:

-Shutdown and sample processing: After reaching a stable state, cut off the load current first, and then turn off the equipment power supply; Do not touch the sample before cooling it down. Remove it when the temperature drops below ± 10 ℃ of the ambient temperature and record any changes in the appearance of the sample.

-Data recording and equipment maintenance: Complete recording of test data to ensure traceability; After the experiment is completed, turn off the main power of the equipment, clean the test bench, organize the sensors, and store them properly; Regularly clean the cooling holes of the equipment and the dust on the surface of the load module, and check whether the wiring terminals are loose.