Abstract: An in-situ, thermocouple, soil hygrometer or psychrometer probe equipped with a removable, moisture pervious thermocouple shield, so that the thermocouple may be periodically cleaned for increased life and improved performance, has an elastic, protective boot that retains the shield in place about the thermocouple and permits easy removal of such shield. The boot is made of low-vapor sink material, so as not to interfere with proper operation of the thermocouple, and is configured to firmly grip the thermocouple mount, so that pulling of the thermocouple from its lead wires during removal and replacement of the shield is avoided.

Abstract: A pyrometric sheath in which, in order to, inter alia enhance the response time of the protected temperature sensor, a partition of relatively high thermal conductance is hermetically bonded to the surrounds of an opening in a thermally insulating body. In a preferred arrangement, a thin metal foil partition is chemically bonded to an insulating tube of a refractory oxide ceramic.

Abstract: An ungrounded three wire thermocouple has two thermocouple wires and a ground wire assembled in a metal cylindrical housing which can be immersed in a fluid whose temperature is to be monitored by the thermocouple. The thermocoupled housing may have an insulation surface to electrically insulate the housing from the equipment being monitored and to be isolated from the ground or potential of the equipment being monitored. The ground wire in the thermocouple assembly can be connected to the instrument grounds of the instrumentation which measures or otherwise utilizes the output of the thermocouple wires. The thermocouple is disclosed as being immersed in either a liquid or a gaseous cooling medium. A second embodiment of the invention uses two spaced three wire thermocouples mounted on an insulation support and are exposed to the flow of a gaseous medium whose temperature is to be monitored.

Abstract: A duplex thermocouple assembly for operation in a high pressure environment and to have a rapid response time. The assembly consists of two small diameter thermocouples and a fitting designed to protectively hold the thermocouples. The thermocouples are soldered into two axial channels which extend along the length of a stainless steel cylinder which forms a portion of the protective fitting. At the temperature sensing end of the assembly the ends of the thermocouples project slightly beyond one end of the cylinder. The cylinder is soldered at its other end into a hole axially drilled in one end of a larger stainless steel cylinder so that both cylinders form a protective fitting for the thermocouples.

Abstract: An expendable immersion thermocouple having a ceramic body member and a plastic tailpiece for supporting the thermocouple and producing a cavity into which a refractory cement is poured to secure the thermocouple in place. The tailpiece is provided with axially-extending resilient arms with enlarged end portions to serve as latching devices to temporarily hold the tailpiece to the ceramic body.

Abstract: A tube skin thermocouple assembly and method of making same, characterized by a sheathed thermocouple cable having an angularly disposed sensing end terminating in an end face extending substantially parallel to the axis of the adjacent axial portion of the sheath. A measuring junction of the conductors is formed in an end cavity in the sensing end substantially free of insulating material and filled with filler metal embedding the measuring junction therein, the filler metal thus providing an end closure having an exposed face substantially flush with the end face and forming therewith a contact face adapted for contiguous intimate contact with a tube surface. The end closure may be of a large mass of filler metal for direct welding of the sensing end of the assembly to the tube, and the contact face may be either flush with or slightly offset from the outer diameter of the adjacent axial portion of the sheath, respectively, for flush or radially spaced axial mounting of the assembly on the tube.

Abstract: A temperature sensing device for monitoring high temperature exhaust gases of an internal combustion engine which includes a sensing element and a support for the sensing element including a mounting stem, and electrical connection means secured to the end of the mounting stem which is outside of the manifold. A gas seal connection between the sensing element and the supporting mounting stem is located at a point removed from the hostile operating environment within the manifold and the fit between the sensing element and the mounting stem is such that a slight freedom of movement is available at the portion of the mounting stem innermost of the manifold to thereby shift the point of highest stress to the gas seal and securing connection between the mounting stem and the sensing element.

Abstract: The materials forming the inner and outer conductors of the tip of a safety thermoelement are assembled in disk form, stacked above each other, preferably bonded together, for example by soldering, brazing, welding or the like. The disks are then extruded through an extrusion die which shapes the assembly of the disks into a pin or rodlike inner conductor, surrounded by a closed sleeve or cap formed of the outer conductor material. Preferably, the die additionally is shaped to provide an end terminal portion to the inner conductor, offset by a shoulder to permit assembly of the entire unit into a structural holder.

Abstract: A thermocouple is disclosed carried by and enclosed within a tubular holder which protects the thermocouple wires but provides for limited exposure of the thermocouple tip through an opening in the tube and preferably with a back-up reflector plate.

Abstract: A protective cover which may be used with a sensor probe component of an electronic thermometer is provided having an improved design for a structure comprising two components of dissimilar materials. An elongate shaft or sleeve member preferably of plastic material may have a metallic cap member forming a closural end thereof. The metal cap may have a flange extending outwardly therefrom. This flange extension may traverse backwardly away from the shaft. Plastic material from the shaft is formed about the backward traverse of the cap flange to form an interlocked encasement of the two dissimilar components.

Abstract: A temperature sensor for use in measuring the temperature of metal slabs in a reheating furnace is described. The sensor is located in close proximity to the under-surface of the slabs passing through the furnace and immediately below the level of the top of the slab supporting skids. The sensor comprises a metal housing having an open upper end and a metal disc welded to the housing within the opening; a first thermocouple being connected to the undersurface of the disc at its geometrical center and a second thermocouple being connected to the under-surface of the disc at a position displaced from the geometrical center but spaced inwardly from the housing.

Abstract: A disposable thermocouple probe to be used in association with an electronic processing and indicating device to comprise a clinical thermometer. The dissimilar metals of the thermocouple junction are applied by the vacuum deposition process. The optical nature of the process allows the metal thickness to be graduated to allow the dissimilar metals at the junction to be only 0.0001 to 0.1 mils thick to allow response times of less than one second, while the metal which makes sliding contact with the processing and display portion of the thermometer is graduated to a thickness of 10 times greater, for example, than the metal thickness at the junction to resist the abrasion encountered when inserted at time of use. A method is provided for the handling of the probes in large quantities by molding a structure which resembles a comb in which the individual probes are supported by a backbone.

Abstract: A thermocouple protecting tube substantially has a duplicate tube construction wherein the inner ceramic protecting tube which contains a thermocouple element is concentrically enclosed by an outer protecting pipe which is of high thermal shock resistance.

Abstract: A thermocouple assembly is provided wherein dissimilar metals are joined at a hot junction within a protective annular shield transparent to radiation. The hot junction is formed in situ so as to be in intimate contact with the ID of said shield. When the assembly is mounted on a phase change cup, one of the dissimilar metals is insulated from the cup.

Abstract: A thermocouple structure useful for high temperature applications comprises a pair of thermocouple wires joined at one end to form a thermocouple, the wires being enclosed within a metallic sheath which is closed at one end and open at the other end, the closed end of said sheath enclosing the thermocouple. The thermocouple and wires within the sheath are surrounded and insulated by crushed, compacted mineral oxide material, such as magnesium oxide. The other end of the sheath from which the thermocouple wires extend is filled with ceramic cement to seal the crushed mineral oxide and thermocouple wires therein. The closed end portion of the sheath enclosing the thermocouple has a reduced diameter relative to the other open end portion of the sheath.

Abstract: A thermocouple assembly which includes a plug having a pair of small diameter holes near one end thereof which are spaced a small distance apart to leave a thin quantity of plug material between the holes, and a pair of thermocouple wires extending through the different holes and with the outer ends of the wires joined to the thin quantity of plug material which lies between the holes to form a thermocouple junction.

Abstract: A temperature measuring device for electrically measuring the temperature at a predetermined point within a body member is disclosed. The device comprises a temperature sensor electrically isolated within a metallic sheath, the sheath being securely attached to a deformable mounting head. The head is deformed to produce a gripping force to intimately hold it in position within a cavity disposed in the body member and to maintain the sensor in a temperature sensing relationship with the predetermined point of interest. A spacer member is provided to substantially fill the remainder of the cavity to prevent distortion of the temperature field. A deformable lip is disposed about the periphery of the cavity which overlaps the spacer member and provides a holding force to assist in maintaining the sensor in position.

Abstract: A thermocouple assembly having a thermocouple encased in a tube having an outer carbon permeable layer and an inner carbon reactive layer. The assembly provides extended life for thermocouples used in a carbonaceous environment such as in the carbon liner of a furnace or in carbon bodies during baking thereof.

Abstract: An erodable thermocouple is disclosed having two dissimilar metal conductors, connected or not connected as desired at the ends exposed to the temperature to be measured, the conductors being electrically insulated from each other along their lengths by glass sleeving, one being helically mounted on the other, the conductors being encased within a tubular insulating enclosure and surrounded by a kraft paper tube, the insulating enclosure and tube being swaged to reduce its outside diameter, and having a short metal tube at its outer end. The paper tube burns upon exposure to furnace temperatures providing a slip plane for the thermocouple.

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: An improved thermocouple sensor is disclosed comprising a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys and terminating in ends adapted for thermocouple application, and a metal mass of tungsten or molybdenum intimately contacting the terminal wire ends so as to form an electrical connection therebetween and means for making same.

Abstract: A multipoint thermocouple assembly using coil springs in which a coil spring is used with each thermocouple to maintain contact between the thermocouple measuring junction and the interior side of the assembly housing. Maintenance of such contact helps to insure an accurate reading of temperature changes which occur outside the assembly housing.