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公开(公告)号:US4958938A
公开(公告)日:1990-09-25
申请号:US361239
申请日:1989-06-05
摘要: A temperature transmitter connects to a first conduit containing leads from a temperature sensor and also to second conduit which conveys the output leads of the transmitter to a remote location. A wall in the transmitter divides the transmitter into first and second compartments sealed from one another. The first compartment receives the leads from the temperature sensor and contains the electric circuit for converting the signal of the temperature sensor to an output signal representative of temperature. A feedthrough passing through the wall connects the output signal to the output leads in the second compartment. The arrangement blocks the flow of potentially hazardous fluid from the first conduit through the second conduit to a remote location such as a control room. The transmitter thus provides an integral seal between the conduits and use of an external conduit seal in the second conduit can be avoided.
摘要翻译: 温度变送器连接到包含来自温度传感器的引线的第一导管以及将发射器的输出引线传送到远程位置的第二导管。 发射器中的墙将发射机分成彼此密封的第一和第二隔间。 第一隔室接收温度传感器的引线,并包含用于将温度传感器的信号转换为代表温度的输出信号的电路。 穿过墙壁的馈通将输出信号连接到第二隔间中的输出引线。 该装置阻止潜在危险的流体从第一管道通过第二管道流到远程位置,例如控制室。 因此,变送器提供管道之间的整体密封,并且可以避免使用第二导管中的外部导管密封。