Abstract: A temperature sensor utilizes a resistive element and a thermocouple. One or more leads of the thermocouple are surrounded (electrically insulated) by a conductor or conductors constituting the connections to the resistive element. The conductors are made of a nonmagnetic material. In one embodiment, the second thermocouple lead is constructed as a hollow pipe which constitutes a protective outer casing for the necessary unit, as well as a connection to the resistive element. Embodiments utilizing a plurality of thermocouples are illustrated, as is a similarly constructed cable for connecting the sensor unit to measuring apparatus.

Abstract: A noise thermometer of the type in which a resistive sensing element is exposed to elevated temperatures and has a measuring circuit connected thereto so that the noise voltage output of the sensing element is detected. According to the invention this element is a rectangular parallelopiped, elongated or cubical, of lanthanum chromite, LaCrO.sub.3.

Abstract: A noise-temperature thermometer is provided with a metal sensing wire, and ceramic body at one end thereof, the body being formed with passages through which the leads connected to the resistance wire extend, at least one partition being formed in the ceramic body and lying between the ends of the resistance wire connected to the leads.

Abstract: A temperature-measuring device has an elongated tubular housing in one of ose closed ends is received a noise-temperature resistor having at least one side connected via a wire constituting a thermocouple element to a lead connected to temperature-measuring apparatus. The other side of the noise-temperature resistor is connected to the tubular housing which therefore constitutes the other element within the housing and connected via leads to apparatus without the housing. The thermocouple element or elements may extend from the noise-temperature resistor outside the housing, or may be wholly contained within the housing and connected via a pair of leads to apparatus outside the housing.

Abstract: A temperature-measuring instrument, operating under the principle of noise-signal generation resulting from temperature which comprises a thin metal strand having a thickness of 5 to 50 .mu. in a plurality of turns within an insulating body to increase the effective length of the strand.

Abstract: A temperature-measuring system comprises a thermocouple connectable to a ventional temperature indicator (millivoltmeter) arrangement using the thermoelectric emf, and a length of noise-thermometer conductor (resistor) which is connectable to a noise-thermometer circuit whereby the thermocouple is connected to the noise-thermometer resistor. The system possesses advantages of both the thermoelectric temperature-measuring process and the noise-thermometer measuring process.