23 Year Industrial Explosion-Proof Manufacturer

TheDifferenceBetweenExplosion-ProofLevelATBTCT|TechnicalSpecifications

Technical Specifications

The Difference Between Explosion-Proof Level AT BT CT

Firstly, all three devices are designed for dust explosion protection and fall under the category of secondary explosion-proof equipment. The explosion-proof ratings are as follows: AT < BT < CT.

Condition CategoryGas ClassificationRepresentative gasesMinimum Ignition Spark Energy
Under The MineIMethane0.280mJ
Factories Outside The MineIIAPropane0.180mJ
IIBEthylene0.060mJ
IICHydrogen0.019mJ

CT devices feature a superior dust-proof rating and may be utilized in areas designated for AT and BT. However, AT and BT devices are not suitable for areas that require CT standards.

In other words, CT devices can substitute for AT and BT, but AT and BT devices cannot substitute for CT.

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