In various environmental tests, the stability and reliability of equipment are key to ensuring the success of the experiment. In order to ensure the safe operation of equipment under complex environmental conditions, modern environmental testing equipment is equipped with various protective devices. These devices, although inconspicuous, play a crucial role in every detail of equipment operation. They are like the ‘invisible guardians’ of devices, ensuring the safety of the equipment while ensuring the accuracy and reliability of the test results.

This article will delve into the main protective devices in environmental testing equipment, helping users understand the importance of these ‘behind the scenes heroes’.

1 Control systems

• Temperature protection device

Temperature protection device is one of the most basic and important safety protections in environmental testing equipment. Due to the need to simulate different extreme temperature environments in many experiments, the equipment must have the ability to stably control and respond to sudden temperature changes. When the temperature inside the test chamber exceeds the set range, the temperature protection device will automatically cut off the power to prevent equipment damage due to overheating or overcooling.

This device usually achieves real-time monitoring through temperature sensors. These sensors can accurately detect temperature changes inside the test chamber and provide feedback to the control system. Once there is abnormal temperature fluctuation, the control system will quickly respond to ensure that the equipment always operates within a safe temperature range. For environmental testing equipment that requires long-term operation, temperature protection devices can greatly reduce the occurrence rate of equipment failures, ensuring the continuity of the test and the accuracy of the results.

• Humidity control device

The humidity control device is also an indispensable component of environmental testing equipment. In experiments simulating humid or dry environments, the equipment needs to precisely control humidity to ensure stable experimental conditions. The humidity control device monitors the humidity changes inside the equipment in real time through high-precision humidity sensors and automatically adjusts according to the set parameters.

Excessive or insufficient humidity may cause damage to the testing equipment. When the humidity is too high, the electronic components inside the equipment may become damp, affecting their normal operation; When the humidity is too low, some materials may crack due to drying. Therefore, humidity control devices not only contribute to the stability of the testing environment, but also extend the service life of the equipment.

2 Refrigeration systems

• Compressor overload protection

The compressor is an important component in environmental testing equipment responsible for maintaining a low-temperature environment. The normal operation of the compressor is crucial, as overloading the compressor may result in serious mechanical damage or even burning. To prevent this situation from happening, modern environmental testing equipment is equipped with compressor overload protection devices.

When the working current of the compressor exceeds its rated value, the overload protector will immediately cut off the power supply to prevent the compressor from continuing to operate in a dangerous state. This preventive protection not only protects the compressor, but also reduces unnecessary equipment downtime, ensuring the continuous progress of the test.

• Compressor overpressure protection

If the pressure of the refrigeration system exceeds the safe range, it will have a serious impact on the operation of the compressor and the entire equipment. The overpressure protection device can effectively prevent this situation from occurring. When the pressure of the refrigeration system exceeds the preset safety value, the overpressure protection device will automatically trigger, usually by cutting off the power or closing the corresponding valve to reduce the system pressure and ensure equipment safety.

For equipment that undergoes long-term low-temperature testing, the overpressure protection device of the compressor is particularly important. It not only ensures the normal operation of the equipment, but also prevents safety hazards caused by high voltage, providing a safer operating environment for testing personnel.

3 Test chamber

• Leakage protection

Electrical safety is a serious issue that must be taken seriously in environmental testing equipment. Due to the presence of a large number of electrical components in the equipment, leakage may cause equipment damage or even electric shock accidents. To avoid these risks, leakage protection devices are commonly installed in modern testing equipment.

The leakage protection device can detect whether there is leakage inside the equipment. Once an abnormality is detected, the equipment will immediately cut off the power supply to prevent electric shock accidents. For operators, this is an extremely important safety barrier.

• Grounding protection

The grounding protection device is also the foundation of electrical safety for environmental testing equipment. After the metal casing of the equipment is grounded, it can prevent the risk of electric shock to operators caused by internal leakage of the equipment. When there is a short circuit or leakage in the circuit, the current will quickly enter the ground through the grounding device, thus avoiding the occurrence of electric shock accidents.

Grounding protection not only protects the safety of operators, but also prevents damage to the equipment itself caused by abnormal current. It, together with the leakage protection device, constitutes a dual guarantee for the electrical safety of the equipment.

• Beep alarm system

The buzzer alarm system is an important tool for real-time monitoring of equipment status in experimental equipment. Once abnormal situations occur during the operation of the equipment, such as high temperature, low humidity, compressor overload or leakage, the buzzer system will immediately issue an alarm to remind operators to take timely measures.

This device is particularly important in large-scale experimental projects, as operators may not be able to monitor the equipment status at all times during prolonged operation. The buzzer system ensures that any abnormalities can be detected and resolved in the first time through sound alarms, avoiding the equipment from being in a dangerous state for a long time.

DGBELL, as a high-tech enterprise specializing in research and development, design, and manufacturing of battery safety testing equipment, reliability environmental testing equipment, and overall industry solutions, has over 20 years of industry experience and technological accumulation. We are committed to providing you with one-on-one professional technical consultation and guidance services. If you have any questions or needs regarding the testing equipment, please feel free to contact us at any time. We will wholeheartedly provide you with high-quality service and technical support.