Dongguan manufacturers analyze the hot spots and causes of high and low temperature test chamber operation.

Hot issue 1. Temperature drop is very slow when used

Analysis of the cause: In the above situation, first check whether the studio is dried before the low temperature test, and then do the experiment, or the sample is placed too much, so that the wind in the studio cannot be fully circulated. In addition, after the above reasons are excluded, the inspection is performed. Under the failure of the refrigeration system, this requires the manufacturer to go to the company for professional maintenance.

Hot question 2. Why does the temperature rise after it rises to a certain value?

Analysis of the reasons: mostly because the working environment is not good, the ambient temperature of the equipment room, the distance between the cabinet and the wall of the high and low temperature test chamber is clearly defined in the operating instructions of the test chamber.

Hot issue 3. Do a damp heat test, why the humidity reaches 100%

Analysis of the cause: It may be caused by the drying of the gauze on the wet bulb sensor. The gauze is used for too long. The purity of the water supply will cause the gauze to become hard and not absorb moisture. In addition, check whether the water tank is short of water.

Hot issues 4. Selection criteria for test chambers

Answer: including size (working size, external size), cabinet structure (internal, external material, appearance treatment, internal sealing, moisturizing, etc.), temperature and humidity requirements (temperature, humidity uniformity, fluctuation, temperature rise and fall rate ), the control instrument used in the control system, electrical components, safety protection devices, refrigeration systems, heating systems and air supply systems.

Hot spot problem 5. Temperature control process pressure abnormality

Analysis of the cause: Due to poor heat dissipation, the high pressure side of the compressor will be high. Therefore, check whether the equipment is 30 cm or more away from the wall. If it is not needed, adjust it in time. In addition, the surrounding sealability is checked. If the test chamber is surrounded by a confined space, the ambient temperature will increase and the pressure on the high pressure side of the compressor will be high.

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