Hot box detector alarm monitor
    1.
    发明授权
    Hot box detector alarm monitor 失效
    热盒检测器报警监视器

    公开(公告)号:US3629572A

    公开(公告)日:1971-12-21

    申请号:US3629572D

    申请日:1970-01-07

    CPC classification number: B61K9/06

    Abstract: An alarm circuit monitor for use with railroad car hot box detection equipment is provided. The monitor, which is connected to hot box detectors adapted to generate signals responsive to the temperature of the bearings on both sides of each axle of a railroad car under consideration, includes a first circuit adapted to trigger an alarm in the event the signal responsive to the operating temperature of either bearing exceeds a threshold level for normally low running temperature bearings and a cancellation circuit to prevent the first circuit from triggering the alarm if the operating temperature of the other bearing also exceeds the low level threshold. A second circuit independent of the first circuit is also connected to the hot box detectors to trigger the alarm in the event the hot box detector signal exceeds a threshold level for normally high running temperature bearings.

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