The common materials for industrial instrument housings are plastic, aluminum alloy and stainless steel. Stainless steel, as a high-quality metal material, occupies an important position in the manufacture of industrial instrument housings. Its excellent corrosion resistance, food and drug health and safety, mechanical properties and aesthetics, making the stainless steel shell in the industrial level instrumentation is widely used. However, different working conditions on the instrument housing material has different standard requirements, in the procurement of industrial instruments we can according to the working conditions of the environment and the relevant standards to choose the instrument housing material.

                                                                                                                                                                   Stainless steel housings for industrial instruments

The advantages and disadvantages of the above common housing materials and applicable working conditions are described below:

Plastic material shell: industrial instrument shell made of plastic with light weight, low cost, good insulation, and the processing and manufacturing of plastic material is relatively easy. In addition, plastic material also has corrosion resistance, especially suitable for some special anti-corrosion conditions. However, the plastic material is relatively brittle, not hard enough, easy to be damaged by external forces, but also easy to aging, relatively short life. Plastic shells are mainly used in conventional working conditions, such as: electroplating, pharmaceutical, chemical areas, no explosion-proof requirements and corrosive or insulating requirements of the environmental conditions.

Aluminum alloy housing: Aluminum alloy has many advantages in industrial level instrument housings, such as high strength, light weight, corrosion resistance, good thermal conductivity and plasticity. However, it is relatively high cost, difficult to process and requires high welding process. Aluminum alloy shell because of its unique material characteristics can be used in most working conditions, such as; food, pharmaceutical, petroleum, chemical, water conservancy, shipping and other industries, but in the strong acid, alkali corrosive chemicals containing special conditions can not be used.

Stainless steel shell: stainless steel shell in industrial instrumentation with superior corrosion resistance, strong and stable mechanical properties, beautiful and easy to clean and other advantages, but compared with plastic and aluminum alloy material, stainless steel shell price is much higher. Stainless steel shell has high strength and good toughness, able to withstand large external impact and extrusion; able to resist acid, alkali, salt and other corrosive media, in harsh environments can still maintain stability and durability. More used in food, pharmaceutical, coal, petroleum, chemical, ship, ocean engineering and other environmental conditions. Stainless steel shell for some special requirements of the working conditions is a must, such as coal mines, ocean engineering, etc. on the stainless steel industrial instrument housing has clear requirements. In the super pressure, corrosion resistance, aluminum alloy and plastic material shell is unable to meet the relevant standard requirements. In the food, pharmaceutical industry, industrial flow instrumentation shell selection, due to considerations of aesthetics, health and safety and easy to clean and other characteristics will also be designated to use stainless steel shell. Stainless steel shell with its excellent performance and wide range of adaptability, in the modern industrial instrumentation is widely used, especially some of the need to prevent strong corrosion, high security requirements and food hygiene and other special conditions.

All stainless steel shell can meet the use of complex working conditions, Guangdong KD Energy Technology Co., Ltd. series of products to increase the choice of stainless steel shell material, optional 304 or 316L material shell.