초록 ▼

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 ano

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.

대표청구항 ▼

A temperature transmitter connectable to a first conduit subject to fluid contamination which contains a lead from a temperature sensor and also connectable to a second conduit which conveys an output lead to a location remote from the transmitter, comprising: wall means disposed in the transmitter

A temperature transmitter connectable to a first conduit subject to fluid contamination which contains a lead from a temperature sensor and also connectable to a second conduit which conveys an output lead to a location remote from the transmitter, comprising: wall means disposed in the transmitter for sealingly dividing the transmitter into first and second compartments, the first compartment opening to the first conduit for receiving the lead from the temperature sensor, and the second compartment opening to the second conduit for receiving the output lead; converter means, disposed in the first compartment and having converter terminals receiving the lead from the temperature sensor, and an electric converter circuit for providing an output representing temperature;.and feedthrough means sealingly passing through the wall means and having conductors electrically insulated from the wall for conducting the output to the output lead such that the transmitter blocks flow of the fluid contamination to the second conduit and to the remote location.