Oct 27 , 2021
Manufacturing reliable programmable constant temperature and humidity test box
Produce reliable programmable constant temperature and humidity test chamber!
Every delivery of a programmable constant temperature and humidity test box is an extremely noble thing, because not only the order amount is necessary, but the large amount must be recognized by customers. Every time a new customer is added, it will certainly cause Excitement, but in addition to excitement, a lot of it is to gain the trust of customers.
It is often in the leading position in the field of the natural environment, not only relying on solid production technology but also a lot of it is not easy to reduce the quality of the programmable constant temperature and humidity test chamber to develop a cheap market to better explain the sales volume. Sell this kind of concept.
Constant temperature and humidity equipment test box can not quickly cool down the enumeration method
1. Because the temperature and humidity are persistent or the ultra-low temperature cannot be reached, investigate whether the refrigeration unit can be restarted during the entire operation of the machine and equipment, and the refrigeration unit can be restarted during the entire operation of the machine and equipment, indicating the home of each refrigeration compressor The electrical appliances and routes are all normal, and there is no doubt about the software level of the matching and operating electronic components.
2. Touch the exhaust pipe and breathing pipe of the R404 refrigeration compressor of the main generator set with your hands (pay attention to scalding or freezing, touch it gently first), if you find that the temperature of the exhaust pipe of the refrigeration compressor is not high, The temperature of the return bronchus line is not very cold (no frost), which also indicates the lack of refrigerant in the refrigeration unit.
3. In the whole process of application, the door of the test box cannot be closed normally;
4. Working temperature is too high: If the room temperature is too high, you need to find ways to lower the working temperature, such as installing central air-conditioning in the room or turning on the bottom partition to blow with a cooling fan, and then achieve the actual effect of reducing temperature.
Non-standard constant temperature and humidity test chamber
LED displays carry out high and low-temperature tests?
How to carry out LED display high and low-temperature tests in the way of LED display aging tests? The experimental standard of LED display embrittlement
The embrittlement of the led display is a procedure that must be followed when each piece of the led display is completed. If there is no embrittlement of the led display, whether it is in the room or outdoor, pure color, two-color or wonderful, All are not closed, the following is the embrittlement specification of LED display screen by Kewen Experimental Equipment Co., Ltd. of Dongguan City, Guangdong Province ():
The high and low-temperature test is to simulate whether it will find abnormalities during long-term work. It is the key to ensure the credibility of electronic equipment, and it is the final indispensable step in the production of goods. LED products can improve efficiency after embrittlement, and help stabilize the efficiency of mid-and late-stage applications. The LED display high and low-temperature test is a very critical stage in product quality control.
The led high and low-temperature test is a preventive measure based on the characteristics of the product’s equipment failure rate curve, that is, the bathtub curve, to enhance the credibility of the product.
The embrittlement method of the led display includes constant current power source embrittlement and constant current source embrittlement. DC power supply means that the amount of current is stable and will not change at all times. If there is a frequency problem, it is not a constant current.
At that time communication or pulsating current. Communication AC or pulsating current sources can be designed so that the effective value is stable and will not change, but this type of switching power supply cannot be called a “DC power supply.” Constant current power supply embrittlement is the most suitable for the characteristics of LED current work, and is the most scientifically researched embrittlement method of LED display; overcurrent impact embrittlement is also a new embrittlement method selected by the manufacturer. It can be used according to the application frequency. Adjustable, adjustable-current DC power supplies carry out this type of embrittlement, to distinguish the quality and expected life of the LED display in a short period, and can pick out many safety hazards that cannot be singled out by the basic embrittlement.