1. Overview Some companies refrigeration system configuration, some accessories on the book must be fully matched. Is it really necessary to match all the accessories? Is it always good to have it all together? Anyway, nothing, just analyze it, share it with all friends, as to whether it is correct, it is a matter of opinion. 2. Oil separator The oil separator can backflow most of the compressor lubricating oil brought out from the compressor exhaust port, and a small part of the oil can be returned by the compressor suction port with the r

1, the structure of the structure of the equipment to a large extent affect the working middle temperature uniformity. Because the structure is difficult to be completely symmetrical, the uniform temperature from the face has an adverse effect. The door is in the front, the air conditioning room is at the back of the box, the upper supply air and the lower return air, and the forced convection. This kind of structure has good symmetry between left and right, and can easily achieve uniform temperature between left and right. 2, the sealing of the sealed box is not good, such as the door leakage, which affects the uniform temperature of the equipment studio. 3, the test volume is too large if the detection of

"Automation" is known as "sunrise industry" is the trend of today's scientific and technological development. At present, almost all industrial sectors can be hooked with automatic control, modern agriculture, national defense are also closely related to automation, and the application range of automation is quite extensive. The course content of automation majors intersects with electronic engineering, computer engineering, electrical engineering and even chemical engineering.

With the continuous improvement of labor costs, more and more enterprises have begun to pay attention to the field of industrial automation equipment, especially non-standard automation equipment, which is not as simple as the traditional standard equipment, but with flexible customization, easy operation and diversified functions to bring new development opportunities to the industrial manufacturing industry. China's non-standard automation equipment began to emerge, but encountered many obstacles in the development process. Non-standard automation equipment is in high demand In the past, China's manufacturing boom relied on a flood of cheap labor. However, with the change of time and environment, with the decrease of the new labor population in recent years, the improvement of people's living standards, labor is no longer a cheap resource, and it has become more and more common to find a job difficult, in order to mee

First, the basis for equipment selection: the types of natural environmental factors and induced environmental factors existing on the earth's surface and atmospheric space, at present, it is not possible to calculate an exact number, which has a greater impact on the use and life of engineering products (equipment) more than a dozen kinds of factors. Engineers who are engaged in the research of environmental conditions of engineering products summarize the environmental conditions that exist in nature and induced by human activities into a series of test standards and norms to guide the environmental and reliability tests of engineering products. For example, to guide military products to conduct environmental tests GJB150 - the People's Republic of China's national military standard "Military equipment Environmental test Method", to guide electrical and electronic products to conduct environmental tests GB2423 - the People's Republic of China's national standard "Electrical and electronic products Environmental Test Method Guide" and so on. Therefore, the main basis for our selection of environmental and reliability test equipment is the test specifications and test standards of engineering products. Secondly, in order to standardize the tolerance of environmental test conditions in test equipment and ensure the control accuracy of environmental parameters, the natio

Oil-type vacuum pump is referred to as oil-type pump, oil-type vacuum pump is also known as oil-sealed rotary vane vacuum pump or oil-sealed mechanical pump. Therefore, the oil vacuum pump is the vacuum equipment product that uses the vacuum pump oil as the medium to seal the pump, so the maintenance of the oil pump should consider the replacement of the medium oil and the use of precautions. Oil seal rotary vane vacuum pump is the most widely used oil seal single stage rotary vane vacuum pump, followed by water ring vacuum pump -2X double stage vacuum pump, this paper mainly introduces the maintenance of oil pump and vacuum pump oil replacement and use of several points for attention.

First, the vacuum pump degree is not enough Possible cause: insufficient motor power supply resulting in insufficient speed; Insufficient water supply; The clearance between the impeller and the distribution plate is too large; Mechanical seal damage resulting in leakage; Excessive impeller wear; The circulating water cannot be discharged.

1. Water ring vacuum pump maintenance (1) Should always pay attention to the oil level and the cleanliness of the oil, the new pump work 150 hours to change the oil once, after every 2-3 months to change the oil once. If the use conditions are not good, when the vacuum drops, the oil change time can be shortened. (2) The pump and pump room should be kept dry

How to distinguish the fault of temperature control instrument First, the main fault identification method of relay output temperature instrument: 1. Under the premise that the thermocouple or thermal resistance is in good condition and the instrument is connected correctly, the instrument does not heat up after being energized, and even the phenomenon of measuring temperature falling (the set temperature is higher than the prerequisite for measuring temperature).

1. This product is a non-explosion-proof product, please do not use the constant temperature and humidity machine in the environment with flammable or explosive gas. 2. To prevent electric shock, misoperation, and faults, do not switch on the power supply before the installation and cable connections are complete. 3. In order to avoid machine failure in the constant temperature and humidity test chamber, please provide power supply within the rated voltage range. 4. Please try not to open the test chamber door during the work of the instrument. Opening at high temperature may cause burns to the operator, and opening at low temperature may cause frostbite to the staff in the early morning, and may cause the evaporator to freeze, affecting the refrigeration effect.

First, the reliability test of electronic products: The test conducted to evaluate and analyze the reliability of electronic products is called reliability test. The purpose of the test is usually as follows: 1. In the development stage, it is used to expose the defects in all aspects of the trial-produced products and evaluate the reliability of the products to reach the predetermined indicators.

1. Reproducibility of environmental conditions The complete and accurate reproduction of environmental conditions existing in nature in the laboratory is elusive. However, within a certain tolerance range, people can accurately and approximately simulate the external environmental conditions experienced by engineering products in the process of use, storage, transportation, etc. This paragraph is summarized in engineering language. The environmental conditions created by the test equipment around the tested product (including the platform environment) should meet the environmental conditions and tolerance requirements specified in the product test specification. For example, the temperature box used for military product testing must not only meet the national military standard GJB150.3-86, GJB150.4-86 according to different types of products in the high temperature, low temperature test value, test time, but also meet

1. The laboratory shall take the specified proportion of products as test samples according to the [test order]. 2. Indoor temperature: 15 ~ 35℃, relative humidity: no more than 85%R.H. 3. Check the intact state of the test equipment to confirm that the equipment is normal 4. Confirm that the specimen is not "explosive, flammable or highly corrosive" substance. Two, high and low temperature test box test procedure 1. High temperature test 2. Open the main power switch 3. Place the sample in the test box, and the products shall not touch each other; Close the test chamber door. 4. Open the temperature controller and SET the temperature according to the specified requirements, the operation method is as follows: click the "SET" key once, the digital tube in the bottom row of the instrument flashes, use the "" displacement key to move the number, use" "to reduce the key and" "to increase the key to change the set value. After setting, click" set "key twice to return to the measuring surface. The value of T1 is "0", do not change it). 5. Press the start button, then press the time control switch to open the time controller, and set the ti

First, confirm whether the power cord is properly installed in accordance with the specifications and effectively connect the ground wire. 2. Confirm whether the dry-ball overtemperature protection switch is set at the maximum temperature of the equipment plus 10~20℃. This is the safe structural range of the equipment. Third, check whether the wet bulb overtemperature protection switch is set at 150℃. Note: The gauze should be removed when the temperature test is only done. If the gauze is operated at a high temperature above 85℃, the gauze should be replaced before the next operation, otherwise it may not be able to absorb water. Please wash your hands before changing the gauze (the gauze is sterilized when it is packed).

According to a recent market research report, the global testing chamber market is expected to witness substantial growth in the coming years. Factors such as increasing demand for reliable and accurate testing, technological advancements in testing chambers, and stringent regulations in various industries are driving the market growth.

A new type of test chamber technology has been developed that is revolutionizing product testing across industries. This technology provides more precise and efficient testing results, reducing the time and cost associated with traditional testing methods. It is expected to have a significant impact on industries such as automotive, electronics, pharmaceuticals, and more.

Growing Demand for Environmental Test Chambers:The demand for environmental test chambers is on the rise, driven by the need to simulate various environmental conditions for product testing. These chambers are used to test the performance and durability of products under extreme conditions such as temperature, humidity, vibration, and altitude. With industries focusing on improving product quality and reliability, the market for environmental test chambers is experiencing significant growth.

1 A brief discussion on the use and maintenance of environmental and reliability test equipment [Abstract] : This paper describes the current status of environmental test equipment, the correct use of environmental test equipment and the general maintenance of environmental test equipment. The purpose is to help the majority of environmental test personnel to have a preliminary understanding of the correct use of environmental test equipment. [Key words] : environmental test equipment use maintenance

Transportation equipment industry Furniture, food, electronics, metallurgy, electricity, coal, chemical, building materials, wharf and other industries. Shenzhen production line for conveying powder material vacuum conveying device, easy to install, easy to clean, low noise, no dust conveying advantages. Meet the requirements of pharmaceutical, food and othe

Environmental testing, a type of reliability testing, has evolved into a method of predicting how the environment in which a product is used affects the performance and functionality of the product. In other words, environmental tests are used to assess the degree of environmental impact on the product before it is put on the market; When the function of a product is affected, environmental testing is used to identify the cause and measures are taken to protect the product from environmental impacts to maintain product reliability. These tests have gone far beyond their original purpose and are now used in a wide range of applications, including the development of materials and products, various inspections during the production process, inspection before transportation and quality control after transportation, as well as to analyze defects during actual use of products and to improve new products. Environmental testing is very effective for testing methods and maintaining product reliability. The environmental test we talk about here is a narrow sense, and actually