In a protective circuit for switching off a hazardous installation the aforementioned signaling devices are connected in series to a safety control device.
在用于关闭危险设备的安全电路中，这样的信号装置互相串联地连接到安全控制器。
But an expensive installation was ruined, lives were lost and hazardous levels of radiation leaked into the atmosphere.
但是如此贵重的装置被毁坏，一些人失去了生命，达到危险级别的辐射泄漏到了大气中。
An Intrinsic Safety Barrier is optional for sensor and cable installation in hazardous rated locations.
内在的安全屏障是可选的传感器和电缆额定危险地点安装。
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