Abstract: A heat sensitive cable capable of generating a temperature representative measurable voltage. The cable includes a pair of thermoelectric conductors disposed in contacting side-by-side relation together with an electrical insulation for passively self-generating a temperature representative measurable voltage between the conductors when the cable is exposed to ambient temperature. A flexible outer jacket formed of an electrically non-conductive material is provided to completely surround the conductors. The electrical insulation causes a change in the temperature representative measurable voltage with an increase or decrease in temperature at every location along the jacket. A change in the temperature representative measurable voltage under such condition is representative of a change in ambient temperature. The electrical insulation also causes a change in the temperature representative measurable voltage with an increase in temperature above the prevailing ambient at any location along the jacket.

Abstract: A heat sensitive tape capable of generating a temperature representative measurable voltage. The tape includes an elongated flexible strip of electrically non-conductive material. A pair of thermoelectric conductors extend along the strip in spaced apart side-by-side relation. The tape also includes an electrical insulation capable of passively self-generating a temperature representative voltage between the conductors when the tape is exposed to ambient temperature. The insulation causes a change in the temperature representative measurable voltage with an increase or decrease in temperature at every location along the strip. A change in the temperature representative measurable voltage under such condition is representative of a change in ambient temperature. The insulation also causes a change in the temperature representative measurable voltage with an increase in temperature above the prevailing ambient at any location along the strip.

Abstract: A heat sensitive cable operable over a temperature range of between approximately -20.degree. F. and 1650.degree. F. The cable includes a tubular metallic sheath which is substantially temperature resistant and moisture impervious. It also includes a mass of compacted insulation material filling the sheath and having an insulation resistance variable with temperature in the range of between approximately 100 and 50,000 ohms. The cable further includes at least one thermoelectric conductor positioned within the insulation material filling the sheath. A method of manufacturing the cable includes the step of preparing the insulation material and advancing the thermoelectric conductor through a given region. It also includes the step of advancing a strip of flat metal material past apparatus for forming and welding a tubular sheath surrounding the given region.

Abstract: A heat sensitive cable operable over a temperature range of between approximately -20.degree. F. and 1650.degree. F. The cable includes a tubular metallic sheath which is substantially temperature resistant and moisture impervious. It also includes a mass of compacted insulation material filling the sheath and having an insulation resistance variable with temperature in the range of between approximately 100 and 50,000 ohms. The cable further includes at least one thermoelectric conductor positioned within the insulation material filling the sheath. A method of manufacturing the cable includes the step of preparing the insulation material and advancing the thermoelectric conductor through a given region. It also includes the step of advancing a strip of flat metal material past apparatus for forming and welding a tubular sheath surrounding the given region.

Abstract: A heat sensitive cable operable over a temperature range of between approximately -20.degree. F. and 1650.degree. F. The cable includes a tubular metallic sheath which is substantially temperature resistant and moisture impervious. It also includes a mass of compacted insulation material filling the sheath and having an insulation resistance variable with temperature in the range of between approximately 100 and 50,000 ohms. The cable further includes at least one thermoelectric conductor positioned within the insulation material filling the sheath. A method of manufacturing the cable includes the step of preparing the insulation material and advancing the thermoelectric conductor through a given region. It also includes the step of advancing a strip of flat metal material past apparatus for forming and welding a tubular sheath surrounding the given region.