low temperature test chamber Specific failure: The constant temperature and humidity test chamber frequently "jumps" during the day when it works, and the cooling effect is normal at night. low temperature test chamber Analysis: The refrigeration effect is normal at night,...
In the environmental test of solar cells, the humidity and freezing, temperature cycling, damp heat test, high and low temperature damp heat aging tests mentioned in the specification must be carried out. Confirm whether the solar cell fails or fails during the test. The failure of solar cells can be judged through...
①The deflation time should not be too long each time, it can be performed 2-3 times continuously to avoid wasting refrigerant. ②If there is a spare shut-off valve on the top of the condenser or accumulator, the air can also be discharged directly from the valve. high...
The working principle of high and low temperature chamber refrigeration: the refrigeration cycle adopts the reverse Karo cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor,...
The first step is to check whether there is water in the upper water tank of the constant temperature and humidity testing machine. If there is no water, then check whether there is water in the lower water tank; if there is no water in the upper and lower water tanks, you need to add water to the lower water tank...
(1) The test sample should be placed in the test box according to the standard requirements, and the temperature in the test box (chamber) should be raised to the specified point, and kept for a certain period of time until the temperature of the test sample reaches a stable temperature, whichever is...
Introduction of high and low temperature impact test chamber air circulation device High and low temperature impact test chamber is widely used in metal, plastic, rubber, electronics and other material industries. They have tolerated the test product in a continuous environment of extremely high temperature and...
The constant temperature and humidity test body is processed and formed by CNC machine tools. The appearance is beautiful and generous, and it is novel and adopts non-reactional handles. Operation details. The inner tank of the constant temperature and humidity test case is made of imported stainless steel (SUS304)...
The high and low temperature test chamber does not start after starting Answer: 1. Whether the power supply voltage of the high and low temperature test box is within the range specified in the instruction manual, the general requirement is 380V. If it is not within this range, a voltage regulator or an...
The high and low temperature test chamber is laborious to open Answer: The trouble of opening the door of the high and low temperature test chamber mostly occurs in summer or rainy season. This is because there are irregular small holes on the contact surface between the door and the door cover....
Excessive noise in the high and low temperature test chamber Answer: 1. Too much refrigerating oil enters the evaporator, and the high and low temperature test chamber will produce a "gurgling" bubble sound. 2. The compressor condenser fixing screw or nut of the high and low temperature test box...
the temperature recovery time of the thermal shock test box is also called the high and low temperature test box. It is mainly used to test the material structure or composite material. It can tolerate the degree of endurance in a continuous environment of extremely high...