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1. Find out the composition of flammable media in hazardous areas and the division of areas, and find out the explosion-proof level and temperature group. Products with explosion-proof grade higher than that of flammable medium or temperature group or the same shall be selected (for example, isolation transmitter, transmitter, electric quantity transmitter, safety barrier).
2. Explosion proof limit switches must be carried out in strict accordance with the provisions of the "Electrical Safety Regulations of the People's Republic of China for Explosive Hazardous Locations".
3. During installation, the words and contents on the plate shall be checked strictly. Ensure that the limit switch is well grounded during installation.
4. The cover of the sensor must be strictly checked before installation, and the anti disassembly device must be tightened. It is forbidden to open the cover for inspection and testing on site.
5. Explosion proof pipe is used to connect the sensor and the cable duct.
Precautions for installation of explosion-proof