Abstract: A device for determining and/or monitoring the temperature of a medium includes a temperature sensor for detecting the temperature and an electronics module, wherein the temperature sensor includes a temperature-sensitive sensor element in electrical contact with the electronics module via at least one connection line. The device further includes a diagnostic unit with a separate device for temporal variation of a power of an input signal, by which the temperature sensor or at least one component of the device can be acted upon, and which diagnostic unit is configured to determine, based on an output signal of the temperature sensor in response to the input signal, a statement about a thermal coupling of the device to the medium. A method for operating the corresponding device is also disclosed.

Abstract: The present disclosure relates to an apparatus for determining and/or monitoring a temperature of a medium in a containment, including a temperature sensor for registering temperature, and a flexible, heat-conductive support element, which is arrangeable on an outer surface of a wall of the containment, wherein the temperature sensor is secured to the support element.

Abstract: A device for determining the temperature of a medium includes a temperature sensor with a resistance element placed in electrical contact using first and second connection lines, wherein the first connection line is divided into a first section and a second section. The first section faces the sensor element and is composed of a first material, and the second section faces away from the sensor element and is composed of a second material which differs from the first material. The second connection line is composed of the second material. The first section of the first connection line and at least one part of the second connection line form a first difference temperature sensor in the form of a thermocouple. The first and second connection lines are attached to the resistance element so that the first difference temperature sensor detects a temperature gradient at the location of the temperature sensor.

Abstract: The present disclosure relates to an apparatus for determining and/or monitoring a process variable of a medium, comprising at least one sensor element arranged in a sensor head for determining and/or monitoring the process variable, wherein an internal volume of the sensor head is filled at least partially with a filler. The filler includes at least one fill material, for which at at least one predeterminable phase transformation temperature a phase change occurs, in which the material remains in the solid state, wherein the fill material is in a first phase state when a temperature of the fill material is less than the phase transformation temperature, and wherein the fill material is in a second phase state when the temperature of the fill material is greater than the phase transformation temperature.

Abstract: The present disclosure relates to a device for determining and/or monitoring the temperature of a medium, comprising a temperature sensor with a temperature-sensitive sensor element which is placed in electrical contact by means of at least a first connection line and a second connection line, wherein the first connection line is divided into a first section and a second section, wherein the first section which faces the sensor element is composed of a first material, and wherein the second section which faces away from the sensor element is composed of a second material which differs from the first material, wherein the second connection line is composed of the second material, and wherein the first section of the first connection line and at least one part of the second connection line form a first difference temperature sensor in the form of a thermocouple.

Abstract: The present disclosure relates to a method for determining and/or monitoring the temperature of a medium by means of a thermometer having at least one temperature sensor, the method including: determining a measured value for the temperature of the medium by means of a temperature sensor; determining a heat flow, in particular heat dissipation, in the region of the temperature sensor; and determining a measured value deviation for the measured value for the temperature on the basis of a model for heat dissipation in the region of the temperature sensor.

Abstract: Disclosed is an apparatus for determining a flow of a medium through a pipe, as well as a method for operating the apparatus. The apparatus comprises a heating element at least partially in thermal contact with the medium and which is heatable by means of a heating signal, and a first temperature sensor for registering a temperature of at least one component of the apparatus or the temperature of the medium. The heating element and the first temperature sensor are arranged outside of the pipe. The apparatus includes at least one coupling element, which is at least partially in thermal contact with the heating element, the first temperature sensor and/or a portion of the pipe or tube and serves to assure a thermal coupling between the heating element and the first temperature sensor and between the heating element and the medium.

Abstract: An apparatus for determining and/or monitoring a process variable, for example, temperature, flow or flow velocity, of a medium in a containment includes a temperature sensor for registering temperature securable to an outer surface of the wall of the containment, at least one connection line for electrical contacting of the temperature sensor, and securement means for a releasable securing of the temperature sensor and a temperature sensor-near section of the connection line to the outer surface of the wall of the containment. According to the present disclosure, at least the section of the connection line is securable to the outer surface of the wall of the containment such that the section extends parallel with the wall of the and is in thermal contact with the wall of the containment.

Abstract: The present disclosure relates to a device for determining and/or monitoring temperature of a liquid, comprising a temperature sensor, a reference element for in-situ calibration and/or validation of a temperature sensor and an electronics unit, wherein the reference element is composed at least partially of a material, in the case of which at least one phase transformation occurs at at least a first predetermined phase transformation temperature in a temperature range relevant for calibrating the temperature sensor, in which phase transformation the material remains in the solid phase. According to the present disclosure, the electronics unit is embodied to supply the reference element with a dynamic excitation signal. Furthermore, the present disclosure relates to a method for calibration and/or validation of a temperature sensor based on a device of the invention.

Abstract: The invention relates to an apparatus for determining and/or monitoring a temperature of a medium in a containment, comprising a measuring insert having a temperature sensor for registering temperature, a protective tube, in which the temperature sensor is arranged, and a heat conductive, formed piece, which is arranged in the protective tube and surrounds the measuring insert at least sectionally.

Abstract: The present invention includes an apparatus for determining and/or monitoring a process variable, especially the temperature, or the flow, of a medium in a containment, including a temperature sensor for registering temperature and a flexible, a heat insulating support element, which is arrangeable on an outer surface of a wall of the containment, wherein the temperature sensor is secured to the support element.

Abstract: The present disclosure relates to a method and apparatus for in-situ calibration and/or validation of a thermometer having a temperature sensor and a reference element composed at least partially of a material that undergoes a phase transformation at a phase transformation temperature, wherein the material remains in the solid phase in the phase transformation, the method including detecting and/or registering a measured value from the temperature sensor; detecting and/or registering a reference variable of the reference element; detecting the occurrence of the phase transformation based on a change of the reference variable; ascertaining a phase transformation time at which the phase transformation occurs; determining a sensor temperature using the temperature sensor at a measurement time that has the shortest time separation from the phase transformation time; and comparing the sensor temperature with the phase transformation temperature and/or determining a difference between the sensor temperature and the

Abstract: The present disclosure relates to an apparatus for determining and/or monitoring a process variable of a medium, comprising at least one sensor element arranged in a sensor head for determining and/or monitoring the process variable, wherein an internal volume of the sensor head is filled at least partially with a filler. The filler includes at least one fill material, for which at at least one predeterminable phase transformation temperature a phase change occurs, in which the material remains in the solid state, wherein the fill material is in a first phase state when a temperature of the fill material is less than the phase transformation temperature, and wherein the fill material is in a second phase state when the temperature of the fill material is greater than the phase transformation temperature.

Abstract: The present disclosure relates to a device for determining and/or monitoring the temperature of a medium, comprising a temperature sensor with a temperature-sensitive sensor element which is placed in electrical contact by means of at least a first connection line and a second connection line, wherein the first connection line is divided into a first section and a second section, wherein the first section which faces the sensor element is composed of a first material, and wherein the second section which faces away from the sensor element is composed of a second material which differs from the first material, wherein the second connection line is composed of the second material, and wherein the first section of the first connection line and at least one part of the second connection line form a first difference temperature sensor in the form of a thermocouple.

Abstract: A device for determining the temperature of a medium in a tube or in a container is disclosed. The device includes a measuring tube protruding into the medium and closed at the end facing the medium by a measuring tube base, a resistance-based temperature sensor as a main sensor, and a thermoelectric voltage-based temperature sensor as an auxiliary sensor, arranged within the measuring tube at a fixed offset relative to the main sensor. The main sensor and the auxiliary sensor transmit measurement values to an analysis/transmitter unit. If the amount of a difference between the measurement values of the main sensor and the auxiliary sensor exceeds a first specified threshold, a fault notification relating to the integrity of the device is generated in the analysis/transmitter unit.

Abstract: Disclosed is an apparatus for determining a flow of a medium through a pipe, as well as a method for operating the apparatus. The apparatus comprises a heating element at least partially in thermal contact with the medium and which is heatable by means of a heating signal, and a first temperature sensor for registering a temperature of at least one component of the apparatus or the temperature of the medium. The heating element and the first temperature sensor are arranged outside of the pipe. The apparatus includes at least one coupling element, which is at least partially in thermal contact with the heating element, the first temperature sensor and/or a portion of the pipe or tube and serves to assure a thermal coupling between the heating element and the first temperature sensor and between the heating element and the medium.

Abstract: The present disclosure relates to a method and apparatus for in-situ calibration and/or validation of a thermometer having a temperature sensor and a reference element composed at least partially of a material that undergoes a phase transformation at a phase transformation temperature, wherein the material remains in the solid phase in the phase transformation, the method including detecting and/or registering a measured value from the temperature sensor; detecting and/or registering a reference variable of the reference element; detecting the occurrence of the phase transformation based on a change of the reference variable; ascertaining a phase transformation time at which the phase transformation occurs; determining a sensor temperature using the temperature sensor at a measurement time that has the shortest time separation from the phase transformation time; and comparing the sensor temperature with the phase transformation temperature and/or determining a difference between the sensor temperature and the

Abstract: The invention relates to an apparatus for the calibration of a thermometer in situ, wherein the apparatus has a temperature sensor (S) for determining a temperature (T); wherein a reference element (K) is provided for calibrating the temperature sensor (S); wherein the reference element (K) at least partially comprises a ferroelectric material (D), which experiences a phase transformation at at least one predetermined temperature (TPh) in a temperature range relevant for calibrating the temperature sensor (S).

Abstract: The present disclosure relates to a device for determining and/or monitoring temperature of a liquid, comprising a temperature sensor, a reference element for in-situ calibration and/or validation of a temperature sensor and an electronics unit, wherein the reference element is composed at least partially of a material, in the case of which at least one phase transformation occurs at at least a first predetermined phase transformation temperature in a temperature range relevant for calibrating the temperature sensor, in which phase transformation the material remains in the solid phase. According to the present disclosure, the electronics unit is embodied to supply the reference element with a dynamic excitation signal. Furthermore, the present disclosure relates to a method for calibration and/or validation of a temperature sensor based on a device of the invention.

Abstract: The present disclosure relates to a system for monitoring a predeterminable temperature comprising a monitoring unit comprising a reference element composed at least partially of a material in which a phase transformation occurs at a phase transformation temperature, which lies in the region of the predetermined temperature, in which phase transformation the material remains in the solid phase, and a detection unit embodied to detect the occurrence of the phase transformation based on an abrupt change at least one physical or chemical parameter characteristic for the reference element and to generate a report concerning ex- or subceeding of the predeterminable temperature. Furthermore, the present disclosure relates to a monitoring unit and to a detection unit for application in a system of the disclosure as well as to a method for monitoring the predeterminable temperature by means of a system of the disclosure.