Analysis of humidity rise after electronic drying cabinet opens

After the electronic drying cabinet is opened, the humidity rises. The humidity of the indoor environment is generally high when the temperature is normal. The users engaged in the electronics industry have purchased the electronic drying cabinet accordingly, and the electronic components are stored in moisture proof, in order to avoid the moisture of the components. , affecting the normal production and quality of the product.

When using the electronic drying cabinet, when the user opens the door to take the material, if you pay attention to the electronic drying cabinet display instrument, you will find that the humidity display of the instrument will rebound. Why is this happening? Let us analyze it.

First of all, when we choose the electronic drying cabinet, when comparing the parameters, we generally pay attention to two matters. The first one is the volume size of the electronic drying cabinet cabinet; the second one is the humidity control requirement range. The volumetric size of the tank can be measured by the number of streams and recent production orders. The choice of humidity range should be selected according to the appropriate humidity requirements of the storage materials. Of course, different types of materials have different humidity requirements for the storage environment. It should be noted here that a variety of materials are stored in the same electronic drying cabinet, and the humidity should be observed. The minimum principle, the humidity requirement of material A is 40% RH, and the humidity requirement of material B is 10% RH. Then the humidity control range of this electronic drying cabinet is 10% RH. It is recommended that users classify materials for moisture storage.

If the humidity control requirement range is ultra low humidity, ultra low humidity is the dehumidification capacity within ≤ 5%. Ultra-low-humidity electronic drying cabinets are commonly used in the SMT patch industry to store special semiconductor materials, ICs, and chips and solder pastes. Because this type of product has a common feature, it is extremely vulnerable to moisture and the allowed external exposure time is very short, and it is easily oxidized. So we need to give it special protection. Set the humidity of the ultra-low-humidity electronic drying cabinet to 5% RH. After the humidity control is stable, when the door is opened and reclaimed, the outside air and the box will form convection, and the humidity will rise. (To avoid excessive humidity rise, the number of door opening and door opening time should be minimized.) How long does it take for the drying cabinet to dehumidify the humidity to 5% RH after opening the door?

To understand this problem, we must first know the normal dehumidification speed of the drying cabinet. After the regeneration, the normal dehumidification speed can dehumidify 20% RH in one hour. If the current relative humidity is 60% RH, if it needs to reach 5% RH, at least three are needed. hour. Then the humidity has reached 5% RH and the door is opened again. When the humidity rises to 20% RH, it only takes an hour. For users who are concerned about the humidity recovery and re-equilibration time, Shenzhen Chuan recommends fast moisture-proof drying cabinet or moisture-proof cabinet with nitrogen moisture-proof dual system for storage. Under the premise of ensuring nitrogen dryness and high circulation speed, only 10 to low humidity is required. minute.

Cane & Walker

Walking aids is an auxiliary device to assist the human body to support weight, maintain balance and walk. It can also be called walking aids, walking stands or walking aids. Among walking aids, walking aids can provide the greatest support and stability. Therefore, it is mainly used for patients with weak strength and poor balance, such as the elderly after orthopedic surgery, patients with poor coordination and Parkinson's disease, and children with cerebral palsy or developmental retardation. With the support of equipment, people with less flexible legs can walk and take care of themselves.
According to the structure and function of Walker, it can be divided into two categories: stick walker and frame walker. The walking aid is simple and light in structure, but its supporting area is small and its stability is poor; The frame walker has a complex structure, but it has a large supporting area and good stability.
Before using the walker, the user's physical condition and use environment should be comprehensively evaluated, including balance ability, lower limb bearing ability, gait, upper limb ability, cognitive ability, lifestyle and use environment.
Select a walker
1. The texture should be light and easy for patients to move.
2. The walker should be placed stably on the ground;
3. The height of the walker should be suitable or adjustable. When the patient stands in the walker and his hands are naturally sagging, he can hold the handrails on both sides and apply pressure on the handrails to ensure the support of weight and balance control;
4. The width of the walker should be moderate, not too wide.

TRUTECH CO., LTD. is an enterprise specializing in the research, development, production and sales of professional OTC products.The main products include shower chairs, armrests, toilet racks and toilet armrests, bedside armrests, elderly chairs and sofas, crutches and walking aids, knee pads, waist supports and other equipment.