The thermometer anticorrosion what?

Bimetallic thermometer is very commonly used instruments and meters, but at the time of use, there is a problem, it is easy to rust or corrosion, so will have anti-corrosion measures. Temperature instrument corrosion resistance of the system is on the corrosive medium or a protective measures taken by the environment. Anti-corrosion instrument system has the following steps: 1) In the case of corrosive medium, instrument, selection of component materials have direct contact with the corrosive medium corrosion resistance, on the surface of parts, internal coating anticorrosion materials, or add protection tube; Used in corrosive medium measurement instrument piping, key parts, casing and other corrosive medium contact and the use of corrosion resistant material, stainless steel, teflon lining, plastic, rubber and so on corrosion resistance of materials; 2) Adopt the method of isolation, isolation is not directly measured medium in contact with the instrument or components, components. Some direct impact in the measuring tube note spacer, by adopting the method of isolated container or the diaphragm. For viscous medium, toxic medium, alkali solid medium or vaporization and condensation in ambient temperature, crystallization and precipitation of dielectric isolation method implementation measure may be adopted. 3) By blowing method and method of liquid measurement or can make up for the isolation method is difficult to meet the requirements of occasions, both to protect the instrument, to achieve the purpose of measurement. Purge method is applied to the corrosion resistance, viscosity, crystallization, melting, sedimentary medium, pressure, flow rate of liquid level measurement. 4) , bracket and foundation for steel structure, bearing, carbon steel pipe and other steel components should be cleaning, brushing anti-corrosion paint, anti corrosion atmosphere and environment. Paint are mainly used in red lead antirust paint, bitumen paint, chlorinated polyvinyl chloride, phenolic paint, epoxy paint, etch primer, magnetic mixed paint, alkyd enamel, etc. Temperature instrument corrosion and rust, helps to prolong the life of the instrument, and maintaining the accuracy of measurement, polluting the measuring medium benefits, so don't belittle the anti-corrosion temperature instrument.