Abstract: A thermocouple structure according to one aspect of the present disclosure includes a first element wire, second element wires formed of a material different from the first element wire, an insulating covering member covering at least one of the first element wire and the second element wires, and a protective tube accommodating the first element wire and the second element wire. Each of the second element wires is bonded to a different position on the first element wire.

Abstract: A sensor includes an airfoil body, a heater element, and a temperature probe. The airfoil body defines a sensor axis and having a leading edge, a trailing edge, and an ice accretion feature. The heater element extends axially through the airfoil body between the leading edge and the trailing edge of the airfoil body. The temperature probe extends axially through the airfoil body between the heater element and the trailing edge of the airfoil body. The heater element is axially overlapped by the ice accretion feature to accrete ice chordwise forward of a tip surface aperture. Gas turbine engines, methods of making sensors, and methods of accreting ice on sensors are also described.

Abstract: A waste heat recovery (WHR) system that can be utilized in internal combustion engine systems includes at least two circuits, one having a low pressure working fluid and another having a high pressure working fluid. Each circuit can include heat exchangers to allow the working fluid to absorb heat form one or more heat source fluids associated with the engine. The system can also include an expander configured to receive the working fluid from the at least two circuits, and generating mechanical power. The system also can include a condenser, a sub cooler, and at least one working fluid pump to pump the working fluid in the at least two circuits. The cooling system also includes a controller that can receive temperature and pressure values from various locations in the WHR system and control at least the flow rates of the working fluids in the at least two circuits.

Abstract: An electronic expansion valve and a manufacturing method therefor, a thermal management assembly and a cooling system are provided. The electronic expansion valve includes a valve core assembly, an electronic control part and a stator assembly. The valve core assembly includes a valve base, a valve core and a rotor assembly, wherein the valve base is provided with a valve port, and the valve core moves relative to the valve base to change the degree of opening of the valve port. The electronic control part controls the stator assembly, and the rotor assembly drives the valve core to move. The electronic expansion valve further includes a sensor, the electronic control part includes an electronic control board, and the stator assembly and the sensor are both directly electrically connected to the electronic control board. The thermal management assembly and the cooling system both include the electronic expansion valve.

Abstract: A multi-piece thermowell system includes a measurement protection device, a temperature measurement device, a torque mechanism, and a torque transfer mechanism.

Abstract: The present disclosure provides for an armored sight level gauge field assembly for placement between fittings to show liquid level, including an elongated cylindrical transparent sight tube shield and a sight tube extending through the sight tube shield. First and second receiver plates define passages for the sight tube to extend therethrough, each receiver plate also sealing the shield. A U-shaped guard is removably connected to each receiver plate and provides a structural protective enclosure, substantially enclosing the sight tube shield. First and second connector plates attach to each receiver plate, and each connector plate defines an opening to receive ends of the sight tube for fluid communication between the sight tube and the fittings, each connector plate comprising a nozzle extending therefrom, opposite said opening, in coaxial alignment with the sight tube. Each nozzle is positionable between and removable from the spaced apart fittings.

Abstract: A hydraulic fluid gage for measuring hydraulic fluid in a hydraulic tank of a work vehicle. The hydraulic fluid gage may include a body, a fluid connection (s), thermometer, and a range indicator. The body is used to receive the hydraulic fluid from the hydraulic tank. The fluid connection is coupled between the body and the hydraulic tank to communicate hydraulic fluid. The range indicator includes a plurality of ranges of temperature, each of which aligns vertically relative to one another. The thermometer is positioned relative to the range indicator such that the temperature indicated by the thermometer corresponds to one of the ranges of temperature, each of the ranges of temperature corresponding to a recommended range of the hydraulic fluid volume in the hydraulic tank. As such, the gage allows a user to measure the hydraulic fluid volume in the hydraulic tank without the influence from different temperature.

Abstract: A sight gauge assembly for displaying a fluid level of an object includes a first connection member comprising a tap defining a bore therethrough and a body comprising a first passageway and a second passageway such that the first passageway fluidly connects to the second passageway and the bore through an interior of the body and the second passageway to fluidly communicates with the first bore and a first accessory. The sight gauge assembly also includes a second connection member comprising a tap defining a bore therethrough and a body comprising a first passageway and a sight tube defining a hollow interior. The sight tube couples to the first connection member and the second connection member to define a first flow path.

Abstract: A total air temperature sensor can include a first airfoil having a heated first surface, a second airfoil having a second surface spaced from the first surface and defining a sensor chamber, a temperature sensor located within the chamber, and a sheath surrounding the temperature sensor.

Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a circuit frequency based on an element capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine remaining useful life of the probe system based on the circuit frequency.

Abstract: A total air temperature probe includes a probe head having an airflow inlet, a main airflow outlet, a main probe head wall extending from the airflow inlet to the main airflow outlet, and a flow separation bend wall positioned between the airflow inlet and the main airflow outlet. The flow separation bend wall is opposite the main probe head wall across a primary flow passage defined through the probe head from the airflow inlet to the main airflow outlet. A flow separation trip feature is defined on an interior surface of the main probe head wall for tripping a boundary layer flow separation in flow in the primary flow passage, e.g., for reduction of deicing heater error.

Abstract: A manufacturing method for a temperature sensor includes a disposing step and a fixing step. The disposing step includes disposing a thermistor element so that a distal end portion of a first lead wire extends along a first side surface and passes by the first side surface, and a distal end portion of a second lead wire extends along a second side surface. The fixing step includes electrically connecting and fixing the first lead wire to a first outer electrode, and electrically connecting and fixing the second lead wire to a second outer electrode, in a state in which a first corner and a second corner are respectively supported by the first lead wire and the second lead wire.

Abstract: Total air temperature (TAT) measurement systems, apparatus, and methods for measuring TAT within an airflow are disclosed. A TAT within an airflow may be measured by (1) positioning a probe within an airflow, the probe including an airfoil and a wedge defining a single channel, the single channel including a temperature sensor; (2) receiving a portion of the airflow through the single channel; and (3) determining TAT for the received portion of the airflow using measurements from the temperature sensor.

Abstract: An engine air system for charge flow temperature estimation includes a charge air cooler outlet temperature sensor configured to provide a first temperature signal, an exhaust gas recirculation outlet temperature sensor configured to provide a second temperature signal, and a control module configured to receive the first temperature signal and the second temperature signal. The control module includes a charge flow temperature estimation module configured to determine an the estimated charge flow temperature at an intake manifold temperature sensing position based on a combination of the first temperature signal multiplied by an estimated fresh air fraction and the second temperature signal multiplied by an exhaust gas recirculation fraction.

Abstract: A superheat sensor includes a housing, a pressure sensor mounted within the housing, a temperature sensor that is integrated to the pressure sensor, and/or is external to the pressure sensor, a fluid passageway connecting the pressure sensor to a source of superheat fluid, and a processor.

Abstract: A system includes a radiation detector array directed toward a fluid flow into a compressor. The radiation detector array is configured to output a signal indicative of a two-dimensional temperature profile of the fluid flow. The system also includes a controller communicatively coupled to the radiation detector array. The controller is configured to detect a temperature variation across the fluid flow based on the signal.

Abstract: A measuring probe has a housing for receiving a sensor element. The measuring probe can be inserted in an opening of a device for carrying a medium. The housing has a curved outer circumference line perpendicular to the insertion direction of the housing in the device.

Abstract: A method of monitoring check valves (6) arranged in gas feed lines (5) of a gas engine includes determining a temperature (S1) according to which a signal transmitter is activated (S3) when a detected temperature in a gas feed line (5) lies outside of a first designated target range; and transmitting (S3) a signal which carries information indicating the gas feed line (5) in which the temperature lying outside of the first target range was detected and/or the cylinder (10) with which the gas feed line (5) is associated.

Abstract: A device for measuring a compressor inlet temperature in a primary stream flow passage of a bypass turbojet. The device includes an airtight hollow structure forming a connection arm of an intermediate casing of the turbojet and configured to pass radially through a flow passage for the primary stream and a flow passage for a secondary stream of the turbojet, the connection arm including at least one inlet air orifice opening out into the primary stream flow passage at an inlet of a compressor and at least one air outlet orifice leading to a zone of the turbojet in which surrounding pressure is less than pressure in the primary stream flow passage at the inlet of the compressor; and a temperature probe having its sensitive element arranged inside the connection arm.

Abstract: The invention concerns a device for measuring at least one physical parameter of a fluid flow, in particular the total air temperature, comprising: a profiled body (2) of elongate shape along a longitudinal axis (L) and having at least two walls arranged contiguous to each other at an acute angle to form a wedge-shaped portion (7), said wedge-shaped portion (7) extending in a direction parallel to the longitudinal axis (L) of the profiled body (2); at least one sensing element (4) for measuring the physical parameter of the fluid flow, said sensing element (4) being positioned in a window (3) formed through the profiled body (2), characterized in that each of the walls (71; 72) forming the wedge-shaped portion (7) comprises at least one notch forming a deflector angle relative to said wall (71; 72) so as to weaken the formation of ice on the wedge-shaped portion (7).

Abstract: A device for determining a physical value of a liquid flowing in a pipe, without contact with said liquid, said device comprising: a sensor (3) for said physical value; a connector (2) to insert into said pipe and comprising: an internal passage (13) extending between two apertures (11, 12), a flexible membrane (6) for a pressure sensor, forming a wall of said internal passage (13); and means (27, 62) for fastening said sensor (3) onto said connector (2); characterized in that said sensor is a temperature sensor (3) fastened to said connector (2) with the sensitive part of said sensor (3) turned towards said membrane (6).

Abstract: A method for determining a value of an exhaust gas temperature in a predetermined position along an exhaust pipe of an internal combustion engine is provided. The method includes measuring a value of an exhaust gas temperature in the exhaust pipe with a temperature sensor and measuring a value of a pressure within a cylinder of the internal combustion engine with a pressure sensor. A value of an exhaust gas temperature in the exhaust pipe is estimated based on the measured pressure value. Whether the internal combustion engine is operating under a transient condition or not is detected. The value of the exhaust gas temperature in the predetermined position is determined based on the measured exhaust gas temperature value, if the transient condition is not detected. Otherwise, the value of the exhaust gas temperature in the predetermined position is determined based on the estimated exhaust gas temperature value.

Abstract: A method of determining an exit temperature of a gas exiting a combustor of a gas turbine includes determining a mass flow and a temperature of fuel being delivered to the combustor; determining a mass flow and a temperature of air being delivered to the combustor, determining a temperature dependence of the specific heat capacity of a burnt mixture of the fuel and the air being delivered to the combustor; and determining an exit temperature of the burnt mixture exiting the combustor. The exit temperature is determined based on the determined mass flow and temperature of the fuel, the determined mass flow and temperature of the air, and the determined temperature dependence of the specific heat capacity of the burnt mixture.

Abstract: This disclosure relates to medical temperature sensors and related systems and methods. In some aspects, a sensor assembly includes a non-invasive temperature sensor to detect a temperature of a medical fluid in a medical fluid line and an ambient temperature sensor to detect an ambient air temperature.

Abstract: An intake temperature sensor capable of precisely detecting the temperature of intake at high speed even in a low air mass flow zone is provided. In an intake temperature sensor having a temperature detecting element 6 inserted in an opening provided in an intake pipe 3 to be disposed in the intake pipe, a temperature detecting element is mechanically joined with a heat sink 4 directly exposed to the flow of the intake flowing in the intake pipe, and the temperature of the intake is output based on an output obtained from the temperature detecting element. Thus, the thermal resistance of the temperature detecting element with respect to the intake flow can be reduced; therefore, the intake temperature sensor capable of precisely detecting the temperature of the intake at high speed even in the low air mass flow zone can be provided.

Abstract: A contamination level determination system for hydraulic oil is provided with a pilot filter arranged in a line of a hydraulic circuit of a hydraulic working machine to remove, from the hydraulic oil, foreign matter of particle sizes that may cause an operation failure of the hydraulic working machine. A first light-blocking sensor senses passage of foreign matter on an upstream side of the pilot filter. A second light-blocking sensor senses passage of foreign matter on a downstream side of the pilot filter. An onboard controller unit functions to determine a frequency of sensing of foreign matter by the first light-blocking sensor, to determine a frequency of sensing of foreign matter by the second light-blocking sensor, and to determine a contamination level on the upstream side of the pilot filter on the basis of results of the determinations from both sensors.

Abstract: According to one embodiment, an apparatus for reading a temperature of a material includes a thermistor that is communicable in temperature sensing communication with the material. The apparatus also includes a first resistor that has a first resistance and a second resistor that has a second resistance that is lower than the first resistance. Additionally, the apparatus includes a switch that is selectively controllable to electrically couple the first resistor and second resistor to the thermistor in a low temperature mode. The switch also is selectively controllable to electrically couple the second resistor to the thermistor and electrically decouple the first resistor from the thermistor in a high temperature mode.

Abstract: A total air temperature probe includes an inlet through which airflow enters a primary airflow passage through the probe. A sensor flow passage is connected to the primary flow passage. Bleed ports extend between the primary airflow passage and a cross-port which extends laterally across the probe. An aspiration aperture in the cross-port couples the cross-port to an internal cavity of a strut of the probe. The aspiration aperture can be centered within the cross-port to provide symmetrical deicing heater error behavior of the probe during changes in angle of attack. An aspiration tube couples the internal cavity of the probe to a pressure source.

Abstract: Device for adapting a temperature probe for a use in a port in a heart-lung machine. An adaptor slip is tapered at an adaptor taper angle less than a port taper angle. The adaptor slip is sized such that the exterior wall of the adaptor slip provides an interference fit with at least a portion of the fluid port. The adaptor slip has an external shoulder abutting the end of the fluid port. The adaptor slip additionally has a sleeve having a closed end having a position with respect to the end of the adapter slip. A probe is configured to be seated in a lumen of the adaptor slip with a proximate end of the probe being proximate to the closed end of said sleeve.

Abstract: A protruding length L1 that is a distance between an inner circumference of a flow path through which fluid flows on an axis of a temperature sensor disposed in the flow path and the center of said temperature sensitive device is 50 mm or more. A protruding location that is a distance between an inner circumferential surface of the flow path and the center of said temperature sensitive device on a cross section extending perpendicular to the axis of said flow path through the center of said temperature sensitive device is defined as L1?. A flow path width that is a distance between intersections of the axis of the temperature sensor with the inner circumferential surface of said flow path when the temperature sensor is projected onto said cross section is defined as D1. A relation of L1?/D1 is specified as a function of the value of D1, thereby reducing heat transfer in an exhaust temperature sensor and enabling the temperature to be measured accurately.

Abstract: In order to provide a robust, weather resistant, portable, low-noise, relatively inexpensive, wind direction detection device, disclosed herein is a method and device for detecting fluid flow direction based on sensing a temperature variation transmitted from a temperature variation source to one or more temperature sensors. One or more indicators are utilized to communicate the measured fluid flow direction to a user. An implementation of the fluid flow direction detection device utilizes a resistance heater as the temperature variation source, thermistors as the temperature sensors, and light emitting diodes (LEDs) corresponding to each thermistor as the indicators. The thermistors and LEDs are arranged in a circular fashion around the resistance heater to accurately detect the direction of a thermal plume generated by the resistance heater.

Abstract: The temperature sensor 1 is equipped with a temperature sensitive device 2 to be disposed inside an exhaust pipe of an internal combustion engine, signal lines 31 connected at a top end side to the temperature sensitive device 2 and at a rear end side to leads for connection with an external circuit, an inner member 18 having a sheath pin 3 in which the signal lines 31 are disposed, and an outer member 13 disposed to cover at least a portion of an outer periphery of the inner member 18. The outer member 13 includes a fixed portion (rib 6) to be fixed to an upper wall of the exhaust pipe, a retainer portion 132 retaining the inner member 18, and an extending portion 131 formed closer to a top end side than the retainer portion 132.

Abstract: Systems and methods for monitoring catalyst presence, reverse and damage in an aftertreatment device. The disclosed systems and methods involve calculating the heat capacity of the catalyst device based on information received from sensors for measuring temperatures at the inlet and outlet of the SCR device and the exhaust mass flow.

Abstract: A water temperature indicating device includes a tube having a port which includes a compartment formed by a bottom wall, a housing attached to the coupler, a circuit board disposed in the housing and has a light element, a processor device is attached to the circuit board for actuating the light element, a sensing device attached to the bottom wall of the coupler for detecting a water temperature and for sending the detected water temperature to the processor device and to operate the light element, and a water operated switching device is used for actuating the processor device to operate the light element with the water flowing through the chamber of the tube.

Abstract: One proceeds with indirect measurement of the temperature of a molten bath (1) of a viscous material such as glass by measuring a parameter such as the motor torque of a rotating mechanical stirrer (3) or the heating power extracted from its coolant water. One thereby dispenses with direct measurement of the temperature by a rod provided with a thermocouple and subject to difficult operating conditions.

Abstract: This invention utilizes the principle of time domain reflectometry (TDR) to develop an improved apparatus and method for suspended solid concentration (SSC) measurement. The apparatus comprises a TDR sensing waveguide for stably determining an electromagnetic-wave (EM-wave) travel time and a temperature sensor. The TDR sensing waveguide and the temperature sensor are submerged in a suspension to detect the EM-wave travel time and the temperature. A temperature-corrected relationship between EM-wave travel time and SSC is found and used to estimate the SSC. Although TDR has been used for measuring soil moisture content and high SSC, its accuracy is not satisfactory for typical SSC monitoring.

Abstract: An integrated system for hydro-thermo-sanitary apparatuses comprising electric current generating means, a control board, water temperature sensors and LEDs or strips of LEDs arranged near the water outlet section for indicating the dispensed water temperature according to the colour with which the light of the LEDs is emitted. An acoustic-vocal indicator may also be provided.

Abstract: The invention provides a total gas temperature sensor for measuring the temperature of gas in a gas flow. A gas temperature sensor in accordance with the invention comprises a measurement chamber having a gas inlet and a gas outlet; an outlet valve located at the gas outlet, operable to seal the gas outlet when in a closed position, and a temperature sensing element located in the measurement chamber. The sensor is simple to manufacture, is robust, provides for a low recovery correction and does not suffer from significant boundary layer problems.

Abstract: A sensing system is provided having a bypass configured to divert fluid from a main passageway. In addition, the sensing system has a fluid sensor situated within the bypass and configured to sense a concentration of an element contained within the fluid. The sensing system also has a first heater configured to convey thermal energy to the fluid sensor. Furthermore, the sensing system has a first temperature sensor configured to sense a parameter indicative of a temperature of the fluid sensor. The sensing system further has a controller configured to regulate the first heater in response to the sensed parameter indicative of the temperature of the fluid sensor.

Abstract: A temperature detecting device includes a heat receiving plate, a displacement transmitting part, a deforming part, a deformation generating part and a displacement detecting part. The heat receiving plate is restrained at its rim portion to generate a displacement of a central portion in its thickness direction with respect to the rim portion in accordance with the temperature of an atmospheric gas. The displacement transmitting part is displaced in accordance with the displacement of the central portion of the heat receiving plate. The deforming part is deformed by the displacement transmitting part. The deformation generating part maintains a distance between the rim portion of the heat receiving plate and the deforming part. The displacement detecting part detects a deformation of the deforming part and outputs an electric signal.

Abstract: A temperature sensor arrangement in an automatic transmission in which the temperature sensor (1) is arranged such that oil leaked from the hydraulic system permanently flows around it.

Abstract: A pressure sensor device includes a temperature sensor mounted on a common housing composed of a resin head and a resin pipe both hermetically connected to each other. The pressure sensor device is mounted on, for example, on an intake manifold of an internal combustion engine to measure an amount of air supplied to the engine based on detected pressure and temperature of the air. A pressure sensor is mounted on the resin head, and a temperature sensor element is supported in the resin pipe. A lead wire of the temperature sensor element such as a thermistor is electrically connected to a conductor bar embedded in the resin pipe. The temperature sensor is directly exposed to the air in the intake manifold, and a size of the temperature sensor and the lead wire is made small to make a response speed of the temperature sensor element high.

Abstract: A fluid temperature control device, which includes: a main body block having a passage channel formed in a surface thereof; a thermal conducting plate that is provided on the surface of the main body block, and covers the passage channel to form a passage for passing a fluid to be temperature controlled; and temperature control means that carries out heat exchanging (heating/cooling), by way of the thermal conducting plate, with the fluid passing through the passage, in which the passage abutting on the thermal conducting plate connects a fluid inlet and a fluid outlet formed in the main body block, and is a single passage having an approximately constant passage cross-sectional area over its entire length.

Abstract: A testing apparatus for a temperature monitoring substrate includes a heat flow generating unit for generating a heat flow in the temperature monitoring substrate in a depthwise direction of the temperature sensors, wherein the temperature sensors are buried in the depthwise direction. Further, a testing method for a temperature monitoring substrate includes generating a heat flow in the temperature monitoring substrate in a depthwise direction, wherein the temperature sensors are buried in the depthwise direction; processing a temperature of the substrate measured by the temperature sensor under the heat flow by a prescribed method; and determining whether or not an error occurs in the temperature sensor.

Abstract: A thermal management system includes an airflow sensor that measures airflow in an air path inside an enclosure to be cooled, wherein the air path includes a filter and a fan. A controller is responsive to the airflow sensor for monitoring the rate of airflow inside the enclosure and determining the condition of the filter. In one embodiment, the airflow sensor is an active type sensor, such as a thermistor, disposed on circuit boards. In further embodiments, the airflow sensor is disposed proximate a tube through the filter.

Abstract: Ambient temperature for a temperature sensor can be calculated using a mobile temperature sensor system that samples air from the boundary layer around a mobile platform and passes the air through a measurement cell containing two flush-mounted or embedded sensor elements. A common reference voltage can be applied by control circuitry to minimize drift in the sensor element readings and to calculate the ambient temperature.