An indicator device including a protective layer, an optically reflective layer, a polymeric material layer disposed between and coupling the protective layer to the optically reflective layer, and a dye disposed within the polymeric material layer, the dye being sensitive to external stimuli.

A device for measuring the temperature of a bath of metal contains a sleeve and an optical head. The sleeve and optical head may be joined together or taken apart by rotation with respect to each other. The sleeve is made at least partially of a refractory material. A method for measuring the temperature of a bath of molten metal makes use of the inventive device. By virtue of this device, mounting and removal is rendered easier while keeping the measuring zone centered and decreasing measurement disturbances caused by the emission of gas from the sleeve.

A control system for an internal combustion engine includes a temperature sensor and an engine controller. The sensor measures the temperature of exhaust gas passing through an exhaust manifold of the engine during each cycle. The controller selectively operates the engine in a first state and a second state. In the first, normal state, a quantity of fuel based on an open loop fuel mass command value is injected into the engine each cycle. In the second state, the controller determines a temperature of the exhaust gas during a normal cycle, injects the quantity and additional fuel into the engine during a second cycle, determines the temperature of the exhaust gas during the second cycle, compares the temperatures, and adjusts the command value for fuel to be injected each cycle when operating the engine in the first state.

A temperature measurement system includes at least one temperature measurement probe. The at least one temperature measurement probe includes at least one hollow filament configured to emit thermal radiation in a predetermined and substantially continuous wavelength band at least partially representative of a temperature of the at least one hollow filament. The at least one hollow filament has a first diameter and a first emissivity. The at least one temperature measurement probe also includes at least one thin filament extending within at least a portion of the at least one hollow filament. The at least one thin filament is configured to emit thermal radiation in a predetermined and substantially continuous wavelength band at least partially representative of a temperature of the at least one thin filament. The at least one thin filament has a second emissivity and a second diameter less than the first diameter.

A near-field probe (and associated method) compatible with near-infrared electromagnetic radiation and high temperature applications above 300?? C. (or 500? C. in some applications) includes an optical waveguide and a photonic thermal emitting structure comprising a near-field thermally emissive material coupled to or part of the optical waveguide. The photonic thermal emitting structure is structured and configured to emit near-field energy responsive to at least one environmental parameter of interest, and the near-field probe is structured and configured to enable extraction of the near-field energy to a far-field by coupling the near-field energy into one or more guided modes of the optical waveguide.

Disclosed in the present invention is a visual monitoring method for cross-section temperature fields and radiation characteristics of boiler furnaces by combining radiation images and spectra. Image detectors can be directly inserted into observation holes of a boiler to acquire flame image data, so that when the detection system is applied to a power station boiler, extra holes are not required to be drilled, and therefore, there is no risk that the strength of a furnace wall of the boiler is reduced by drilling holes. According to cross-section temperature fields of a furnace measured by the detection system, the state of combustion in the furnace can be accurately judged, which can play an accurate and effective guiding role in boiler combustion control, and reduce the temperature deviation in each combustion area of the boiler so as to keep the boiler running smoothly, thereby improving the combustion efficiency of the boiler.

A temperature monitoring system for a substrate heating furnace includes a temperature monitor, and the temperature monitor is located on a prong of a mechanical arm which is configured to fetch and place a substrate. The temperature monitor is configured to monitor the temperature of the substrate which has been heated by the substrate heating furnace and is located on the prong.

A measuring object for use in a heating apparatus for the thermal treatment of substrates is described, wherein the measuring object is the substrate to be treated or an object which in use has a substantially known temperature relation to the substrate to be treated, wherein the measuring object comprises a surface having at least one surface area, which acts as a measuring surface for an optical temperature measurement. A predetermined structure in the form of a plurality of recessions is formed in the surface area, in order to influence the emissivity of the surface area.

A temperature detection device (10) for a vehicle heater detects a fluid temperature. The device includes a temperature sensor (12) as well as a contact element (14) with a first side (16), around which the fluid can flow in at least some sections, and with a second side (18) facing away from the first side (16). The temperature sensor (12) is configured as a radiation sensor. The contact element (14) is arranged relative to the temperature sensor (12) such that at least a part of the radiation emitted from the second side (18) of the contact element (14) can be received by the temperature sensor (12).

Devices, systems, and techniques for monitoring the temperature of a device used to charge a rechargeable power source are disclosed. Implantable medical devices may include a rechargeable power source that can be transcutaneously charged. The temperature of an external charging device and/or an implantable medical device may be monitored to control the temperature exposure to patient tissue. In one example, a temperature sensor may sense a temperature of a portion of a device, wherein the portion is non-thermally coupled to the temperature sensor. A processor may then control charging of the rechargeable power source based on the sensed temperature.