An improvement to bimetallic pipe thermometers utilizing insulating tubular seats. The present invention improves the insulating tubular seat by closing off the tail slot along a proximal end thereof with a bridge or stop. Going forward, users of such bimetallic pipe thermometers no longer need worry about the tail of the bimetallic coil sensor unintentionally slipping out of what is currently an opened-ended tail slot.

A downhole temperature logging method includes deploying a temperature logging device into a borehole, the temperature logging device having a mechanical drive and at least one shape memory alloy (SMA) unit. The method also includes deforming the SMA unit in response to a temperature or temperature range, wherein the deforming causes marks to a medium. The method also includes retrieving the medium and analyzing the marks.

The invention relates to methods and apparatus of measuring real time temperature conditions within a reformer. The data is then used for process control optimization, overheat protection, and improved creep damage and fatigue life prediction.

The invention relates to methods and apparatus of measuring real time temperature conditions within a reformer. The data is then used for process control optimization, overheat protection, and improved creep damage and fatigue life prediction.

A measurement system includes a vibration generation unit that generates sound or vibration in response to a change in environmental state quantity, a vibration-driven energy harvesting unit that generates electric power using the sound or vibration generated by the vibration generation unit, and a transmission unit that is driven with the electric power generated by the vibration-driven energy harvesting unit and transmits predetermined information.

A measurement system includes a vibration generation unit that generates sound or vibration in response to a change in environmental state quantity, a vibration-driven energy harvesting unit that generates electric power using the sound or vibration generated by the vibration generation unit, and a transmission unit that is driven with the electric power generated by the vibration-driven energy harvesting unit and transmits predetermined information.

Temperature control device (1) has a hot water inlet (12), a cold water inlet (14) and an outlet (16) for tempered water. A diffuser (18) is provided in the device (1) to disrupt the flow of hot water after it enters the device (1). The disrupted hot water emerges from the diffuser (18) into a chamber (20) in which it is melded with cold water that is able to enter the chamber (20) from the inlet (14) when a piston (22) is spaced from a seat (24). The melded hot and cold water result in tempered water that is discharged from the outlet (16). A temperature sensitive device (26) is provided, which is responsive to changes in ambient temperature. A temperature setting mechanism (52) is provided which is operatively associated with the temperature sensitive device (26) and permits the maximum temperature of the discharged tempered water to be adjusted.

A high-resistance sensor. The sensor includes a first low-resistance material and a second low-resistance material, each connected with a base material. The first low-resistance material and the second low-resistance material are separated by a gap. A stimulus causes the first low-resistance material and the second low-resistance to move toward each other. A high-resistance material is positioned within the gap intermediate the first low-resistance material and the second low-resistance material. The high-resistance material increases the resistance of a circuit formed by contact between the first low-resistance material and the second low-resistance material when the sensor is subject to the stimulus.

A high-resistance sensor. The sensor includes a first low-resistance material and a second low-resistance material, each connected with a base material. The first low-resistance material and the second low-resistance material are separated by a gap. A stimulus causes the first low-resistance material and the second low-resistance to move toward each other. A high-resistance material is positioned within the gap intermediate the first low-resistance material and the second low-resistance material. The high-resistance material increases the resistance of a circuit formed by contact between the first low-resistance material and the second low-resistance material when the sensor is subject to the stimulus.

A novel high temperature thermal sensing method and device is disclosed that can employ a dual-sensing platinum resistor encased in a mono-crystalline alpha-alumina (sapphire) substrate. The device can comprise four platinum trace elements, oriented with 90 rotational symmetry atop a 1120 oriented crystal lattice substrate. The resistance temperature detectors (RTD) temperature measurement calibration can then be monitored for drift and corrected by comparing the differential strain-derived measurement of temperature to the temperature derived from the RTD measurement. This can allow the device to self-calibrate via comparison of two functionally independent measures of electron mobility and operate in extreme environments which have previously caused RTD sensors to drift from their initial calibration and introduce an undefined measurement error.