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Inspection Methods Classification of Household Appliances

The inspection methods of household appliances can be divided into two categories: physical and chemical inspection method and sensory inspection method.

Physical and chemical inspection refers to the inspection method that applies physical and chemical methods to test the quality characteristics of household appliances by virtue of various instruments and reagents under certain environmental conditions. It includes physical inspection method, chemical inspection method, instrumental analysis method and so on. Physical and chemical inspection is objective and accurate, which is mainly used to inspect the internal quality of electric appliances, and it is an inspection that must be carried out by design, production and identification departments.

Sensory inspection. Sensory inspection is different. It is especially appropriate for commercial enterprises’ acceptance of goods and consumers’ purchase of goods. Its advantages are simple, fast and easy to operate, no complicated instruments and equipment are needed, and it is not destructive to the goods. This kind of inspection focuses on the appearance of electrical products. Although it is not accurate as physical and chemical inspection and is not easy to quantify, it cannot be replaced by physical and chemical inspection in many cases, such as the inspection of the sound quality of electrical appliances and the inspection of the color of TV images. Sensory inspection is not only suitable for the inspection of ordinary electrical appliances, but also for the inspection of high-end electrical products, so it has a wide range of applications. Sensory inspection doesn’t require complex operation techniques, but it requires certain experience.

spection, touching inspection, smelling inspection and taste inspection. Its basic means include seeing, listening, touching, smelling, tasting, knocking, shaking, analyzing, bending, photographing, measuring and counting, etc. The receptivity of human sensory organs is different. Research shows that the receptivity of human sensory organs is arranged from large to small in the above order, and its receptivity is -07, 1.5×100, 5×10′, 30 and 12 information bits. Obviously, the receptivity of vision is the strongest, and that of taste is the weakest. The first four are more used in the sensory inspection of household appliances.

Most of the above-mentioned sensory inspection methods are used comprehensively in the practice of electric inspection, that is, the combined application of seeing, touching, hearing and smelling, so as to increase the accuracy and quickness of judgment. The practice has proved that sensory inspection is a kind of effective inspection method. It is not difficult to master as long as you practice more. Mastering these basic methods is beneficial to prevent the fake and shoddy goods and use the electrical appliances safely.