The explosion-proof types of explosion-proof pressure transmitters are flameproof, intrinsically safe and intrinsically safe for dust. Different types of explosion protection are used in the outgoing protection adapters of the strain transmitters. For the intrinsically safe explosion-proof pressure transmitter, the outlet protection conversion part used is made of nylon, and the diameter of the lock wire is 5~9mm, which we call it P-type. For flameproof and dust intrinsically safe explosion-proof pressure transmitters, the outlet protection conversion part used is made of 304 stainless steel, and the diameter of the lock wire is 5~6mm, which we call it G type. The plugs used in the explosion-proof pressure transmitters are also different in different ranges. When the range of the explosion-proof pressure transmitter ≤ 2.5MPa, the gas vented plug will be used for the P-type and G-type plugs of the intrinsically safe and dust intrinsically safe type. The breathable plug is equipped with a waterproof breathable valve, and the main performance indicators of the waterproof vent valve are air permeability and protection level. For this kind of explosion-proof pressure transmitter with small range, the use of this breathable plug with waterproof vent valve has the characteristics of better air permeability, strong stability, and high precision.

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