The present system and method allow for the detection and diagnosis of abrupt changes of a device operating condition using a sensor array disposed in the coolant where the device is located. The purpose of the sensor array is to identify, in real time, abrupt changes quickly and detect the location of the incident. It may be used, for example, for quench detection of superconducting cables and magnets. This system and method are not only limited to use with superconducting conductors such as magnets, power transmission cables, SMES, MRI, motors and generators, but could also be used for any electric devices disposed in liquid or gas. It can also be used for a liquid level meter. Further, this system and method are not limited to low temperature devices, but may also be used in room temperature or elevated higher temperature devices disposed in gas and/or liquid.

The present system and method allow for the detection and diagnosis of abrupt changes of a device operating condition using a sensor array disposed in the coolant where the device is located. The purpose of the sensor array is to identify, in real time, abrupt changes quickly and detect the location of the incident. It may be used, for example, for quench detection of superconducting cables and magnets. This system and method are not only limited to use with superconducting conductors such as magnets, power transmission cables, SMES, MRI, motors and generators, but could also be used for any electric devices disposed in liquid or gas. It can also be used for a liquid level meter. Further, this system and method are not limited to low temperature devices, but may also be used in room temperature or elevated higher temperature devices disposed in gas and/or liquid.

The present disclosure discloses a device for monitoring electrical equipment for electrical contact overheating, which comprises a gas collection device, a gas detection device, a data processing device, a data storage device and a display and early warning device. The present disclosure further discloses a method for monitoring electrical equipment for electrical contact overheating. The present disclosure can provide a basis for the evaluation and early warning of electrical contact overheating of electrical equipment based on the analysis of the thermally decomposed characteristic gases of the electrical joint compound, and has the characteristics of no space limitation, no need for a large number of layout points, high accuracy, simple structure and easy operation.

The present disclosure discloses a device for monitoring electrical equipment for electrical contact overheating, which comprises a gas collection device, a gas detection device, a data processing device, a data storage device and a display and early warning device. The present disclosure further discloses a method for monitoring electrical equipment for electrical contact overheating. The present disclosure can provide a basis for the evaluation and early warning of electrical contact overheating of electrical equipment based on the analysis of the thermally decomposed characteristic gases of the electrical joint compound, and has the characteristics of no space limitation, no need for a large number of layout points, high accuracy, simple structure and easy operation.

A replacement indicator for a shock absorber includes a pressure sensor which monitors pressure of operating fluid inside the shock absorber. The replacement indicator includes an indicative mechanism operatively coupled with the pressure sensor. The indicative mechanism includes an indicator component coupled to the shock absorber. The indicator component gets displaced relative to an outer surface of the shock absorber when the pressure of the operating fluid drops below a threshold pressure.

A calibration arrangement has a sealable and thermally-isolated chamber comprising a socket mount having a number of reference samples in thermal contact with the socket mount and a number of sample sockets for devices-under test, DUTs, with each sample socket being arranged in proximity to and associated to at least one of the reference samples. The arrangement further comprises a thermal chuck and a circuit board, which is configured to provide electrical connection to the reference samples in the socket mount and DUTs in the sample sockets. The thermal chuck is configured to thermalize the socket mount and the circuit board to a temperature set point.

In an embodiment a method for calibrating temperature sensors includes arranging devices-under-test (DUTs) in a sealable and thermally isolated chamber of a calibration arrangement such that each of the DUTs is in proximity to, associated to and in thermal contact with at least one of a number of reference samples, controlling the calibration arrangement to thermalize the DUTs and the reference samples to a temperature set point and generating, based on a temperature-dependent quantity, a set of measurement signals for each of the DUTs, wherein each set of measurement signals comprises a test measurement signal from a distinct one of the DUTs and a reference measurement signal from each of an associated at least one of the reference samples.

The present system and method allow for the detection and diagnosis of abrupt changes of a device operating condition using a sensor array disposed in the coolant where the device is located. The purpose of the sensor array is to identify, in real time, abrupt changes quickly and detect the location of the incident. It may be used, for example, for quench detection of superconducting cables and magnets. This system and method are not only limited to use with superconducting conductors such as magnets, power transmission cables, SMES, MRI, motors and generators, but could also be used for any electric devices disposed in liquid or gas. It can also be used for a liquid level meter. Further, this system and method are not limited to low temperature devices, but may also be used in room temperature or elevated higher temperature devices disposed in gas and/or liquid.

The present system and method allow for the detection and diagnosis of abrupt changes of a device operating condition using a sensor array disposed in the coolant where the device is located. The purpose of the sensor array is to identify, in real time, abrupt changes quickly and detect the location of the incident. It may be used, for example, for quench detection of superconducting cables and magnets. This system and method are not only limited to use with superconducting conductors such as magnets, power transmission cables, SMES, MRI, motors and generators, but could also be used for any electric devices disposed in liquid or gas. It can also be used for a liquid level meter. Further, this system and method are not limited to low temperature devices, but may also be used in room temperature or elevated higher temperature devices disposed in gas and/or liquid.

A method for measuring an operating temperature of equipment which can be oriented in a defined state using a leveling instrument, where the leveling instrument includes at least one tilt sensor with a housing that is filled with a liquid and a gas bubble, a light source, and a photosensor. The method includes storing a characteristic curve of bubble lengths for the gas bubble and temperatures in a control device of the equipment, measuring the bubble length of the gas bubble, and determining the temperature associated with the measured bubble length of the gas bubble with the aid of the characteristic curve.