NEWS CENTER

Industry News

Avant News

Why does the refrigeration system of the low-temperature test chamber trigger an alarm?

Why does the refrigeration system of the low-temperature test chamber trigger an alarm?

When using a low-temperature test chamber, many issues can arise, and alarms from the low-temperature test chamber are just one of them. Alarms can be categorized into several types, including those from the refrigeration unit and the temperature control system. Let's take a look at the alarms related to the refrigeration system. 1. The overpressure alarm in the refrigeration unit of the low-temperature test chamber occurs when the pressure of the refrigerant exceeds the set value. In this case, the low-temperature test chamber will stop operating and emit a sound. You need to resolve the issue and calibrate the equipment to restore normal operation. 2. When there is a phase loss in the external power supply of the low-temperature test chamber, changes in neutral and live wires, or insufficient pressure in the cooling water circulation system, the equipment will shut down and trigger an alarm. Simply clearing the issues will allow the equipment to return to normal operation. The alarm from the low-temperature test chamber fan occurs when there is overheating in the fan coil or an overcurrent alarm. The solution is similar to those mentioned above; thus, for any problem, we just need to identify its source, and then all these issues will no longer be problems.

12

2020

/

08

When using a high and low temperature test chamber, these principles must be remembered.

When using a high and low temperature test chamber, these principles must be remembered.

The following content is our experience with the high and low temperature test chamber, and I have written some specific precautions for its use. Please feel free to provide feedback. 1. Do not place near heat sources When placing the high and low temperature test chamber, it is essential to leave a maintenance space of 60-70 cm on both sides. This will help the test chamber achieve proper heat dissipation. We also need to ensure that it is not placed near heating appliances to prevent increased power consumption. 2. Keep door opening time short The door opening time of the high and low temperature test chamber should be kept short. In case of a power outage, do not rush to open the door of the test chamber. 3. Avoid large temperature differences in the environment A significant temperature difference in the usage environment can lead to excessive water vapor generation during the operation of the high and low temperature test chamber. Over time, this can accelerate the rusting of components, which may easily cause damage to the test chamber. 4. Do not leave the high and low temperature test chamber unused Many customers turn off the high and low temperature test chamber to save electricity when it is temporarily not in use, but this practice is unscientific and may affect its lifespan. The evaporators of most test chambers are made of aluminum, and if left unused, organic matter on the aluminum walls can mold, corrode the aluminum plates, and damage the refrigeration system. Additionally, the plastic lining ages more easily at room temperature than at low temperatures. Therefore, do not let the test chamber "hibernate." If it must be stopped, ensure to defrost and clean it, placing it in a ventilated and dry area away from direct sunlight. Power on the test chamber once a month for half an hour to an hour to allow the compressor to operate normally before shutting it down. 5. Avoid frequent switching In winter, the temperature in offices is generally around 0-20°C, while the working temperature of the high and low temperature test chamber is relatively higher. If we frequently switch the device on and off, internal components may be damaged due to rapid changes between high and low temperatures.

12

2020

/

08

When operating the high and low temperature test chamber, it is important to pay attention to the freezing situation at low temperatures.

When operating the high and low temperature test chamber, it is important to pay attention to the freezing situation at low temperatures.

The high and low temperature test chamber is based on the safety performance of the actual operating staff and practical operations as standards. When we install it, we need to approach it from two aspects: 1. Installation site, 2. Power supply for the high and low temperature test chamber. In this regard: 1. Site: The entire process of using the high and low temperature test chamber will generate a lot of heat. Please install the equipment in a well-ventilated area. Remember, it must not come into contact with or be near flammable materials or be used in flammable and explosive environments. Also, do not use it in environments with magnetic fields or significant vibrations. 2. Power supply: The power supply for the high and low temperature test chamber uses a three-phase five-wire system, with the equipment cable being a four-core copper cable, consisting of three live wires and one neutral wire. Please ensure the neutral wire is distinguished. Since part of the equipment load and automatic control system is single-phase, incorrect connection of the neutral wire may cause the equipment to malfunction or be damaged. Large high and low temperature test chambers typically have a junction box for electrical connections. Ensuring good grounding for the equipment can make it reliable. Incorrect connection of the neutral wire or grounding wire may cause abnormal operation of the equipment. If additional cables are needed due to customer site factors, please ensure that the commonly used extension cords and power supply rated parameters meet the product's power supply requirements. During the operation of large high and low temperature test chambers, we should pay attention to the following three aspects of safety operation: 1. Low-temperature frostbite: When conducting low-temperature tests in the high and low temperature test chamber, the temperature inside is very low. Be very careful when opening the rear door during or just after the test to avoid frostbite. 2. High-temperature burns: When conducting high-temperature tests in the high and low temperature test chamber, the temperature inside is very high. Be very careful when opening the rear door during or just after the test to avoid burns. 3. Electric shock: This means that while the high and low temperature test chamber has complete measures to prevent electric shock, we still need to be cautious, especially with household appliance automatic control systems; remember not to touch any part of household appliances while they are in operation.

12

2020

/

08

Is this how you evaluate the quality of high and low temperature test chambers?

Is this how you evaluate the quality of high and low temperature test chambers?

The main purpose of the high and low temperature test chamber is to test the reliability of industrial products under high and low temperatures. It is crucial for electrical and electronic products, aerospace, and research institutions. Based on the changes in high and low temperature cycles, let's test the various performance parameters of the products. The alternating temperature change test chamber can be divided into alternating change tests and controlled temperature tests according to different experimental methods and national standards. These two methods can be used to upgrade and expand the basic functions of the high and low temperature test chamber. The alternating change test chamber can set the required high temperature, low temperature, and the time needed for these temperatures all at once within the instrument's parameters. At this point, the high and low temperature test chamber will operate according to the set program, with the temperature, humidity, and other conditions inside closely resembling extreme natural weather, allowing for a more scientific and objective examination of various parameters of the test samples. To assess the quality of the high and low temperature test chamber, it is essential to look at its temperature stability, temperature range, temperature uniformity, and temperature deviation—these four criteria. The ultimate goal is to enable the high and low temperature test chamber to simulate the regular changes in temperature found in natural environments as closely as possible. Among these, temperature uniformity can better reflect the quality of the test chamber; a key point is that after stabilizing the temperature, within any given time interval, the average temperature in the working space should not exceed a maximum deviation of 2 degrees Celsius.

12

2020

/

08

The internet strategic layout of the oil cylinder industry

The internet strategic layout of the oil cylinder industry

Expert Xu Zhengming from China's hydraulic cylinder industry stated that the competition in the cylinder industry has intensified, mainly concentrated in the mid-to-low-end market, while products with high technological content and high added value are still in short supply. Therefore, production enterprises not only need to explore new marketing channels but should also focus more on improving their independent research and development capabilities and large-scale production capabilities. Mobile applications serve as a platform for integrating industry information, allowing producers to strengthen cooperation and improve product manufacturing processes. For consumers, having a comprehensive understanding of industry information and manufacturers enables them to choose suitable cylinder products based on their needs, ensuring their equipment operates at high speeds. Additionally, showcasing products through online platforms compensates for the limitations of physical store display space while also saving marketing costs. In 2009, the Chinese government released the "Revitalization Plan for the Equipment Manufacturing Industry," which included the hydraulic and pneumatic sealing components industry. This indicates that the development of the hydraulic industry from large to strong has been incorporated into the national strategic framework. As a key component of hydraulic systems, hydraulic cylinders are expected to experience significant development in the future. Xu Zhengming mentioned that the future of China's cylinder industry will focus more on applying high-tech innovations, with products developing towards high performance, environmental protection, and energy conservation. He believes that improvements in production technology and the exploration of new marketing channels will bring vitality to China's cylinder industry. China's agriculture, water conservancy, energy, and transportation industries are developing rapidly, necessitating a large amount of machinery to meet their development needs. With the increase in industrialization and automation levels, these equipment require a substantial number of high-performance and highly reliable hydraulic motion and sealing components. As a key component of hydraulic systems, China's cylinder industry has maintained a rapid growth momentum in recent years under the impetus of fast development in equipment manufacturing. Domestic market demand continues to grow rapidly; however, excessive competition in mid-to-low-end products has become a long-term contradiction in industry development that urgently needs to be addressed. Today, the mobile internet is developing at a rapid pace. In contrast to the increasing competition in the offline market for cylinders, adopting online marketing methods undoubtedly opens up broader markets for production enterprises. The launch of the professional mobile application "China Cylinder Network" marks the official entry of China's cylinder industry into the mobile marketing era, which also alleviates the increasingly fierce competition in the industry, especially regarding excessive competition in mid-to-low-end products. Furthermore, using online marketing methods through e-commerce can provide one-stop services for production, supply, and sales, achieving seamless connections between consumers and producers while helping enterprises better understand consumer needs to produce market-adapted products.

12

2020

/

08

< 1 >