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兖州矿业(集团)公司南屯煤矿针对PJD-7型多功能自动喷雾装置用于带式输送机超温自动洒水保护的问题进行改进,大大降低了故障率。①温度传感器和烟雾传感器均为模拟量输出,2台并联或传输距离稍长就出现相互干扰,灵敏度差、误动作
Yanzhou Mining (Group) Company Nantun Coal Mine for PJD-7-type multi-function automatic spray device for belt conveyor over-temperature automatic sprinkler protection problems are improved, greatly reducing the failure rate. ① temperature sensor and smoke sensor are analog output, 2 parallel or transmission distance slightly longer appear mutual interference, sensitivity is poor, malfunction