1. The protective performance of instruments and equipment shall be targeted. Such as whether it is in contact with corrosive media, whether there is mechanical wear, what load it bears, what environment it is installed in, what requirements it has for the appearance of the instrument, etc.

2. Materials and protective layers that are absolutely not eroded do not exist. Therefore, it is necessary to consider the extent to which the materials and protective layers used in the instrument are allowed to be eroded when they are eroded. For the testing instrument, for example, the steel beam on the cylinder compression plasticity instrument will affect the elastic limit after rusting, thus affecting the accuracy of plasticity index measurement.

3. In order to solve the problem of instrument protection, we can choose protective materials, take protective layer technology measures and improve the structure of the instrument.

4. The installation position of instruments shall be improved as much as possible. If it can be installed indoors, it will not be installed outdoors; if it can be installed in a cool and dry place, it will not be installed in a sunny, wet and dark place, etc.

5. In order to protect the accuracy of the instrument, the isolator or other isolation device shall not be used as far as possible.

6. Economy is one of the basic principles of socialist economy. To solve the protection problem of the instrument, it is also required to achieve good protection performance, as well as economic and reasonable, local materials, and simple principles of saving.