1, coal mine safety monitoring equipment must obtain "MA signs Zhunyongzheng"; explosion-proof equipment for coal mine safety monitoring of the environment, must also obtain "explosion-proof certification."

2. The coal mine safety monitoring equipment must be connected by special flame-retardant cable or optical cable. It is strictly forbidden to connect with the dispatching telephone cable. It is strictly forbidden to share with the dispatching telephone cable or power cable.

3. The location of the sensor (probe) must meet the requirements of the Coal Mine Safety Regulations.

4, methane sensor alarm power off sensitive and reliable.

5. It is strictly forbidden to destroy, move or wrap the methane sensor in any way.

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