The temperature-dependent resistance of a MEMS structure is compared with an effective resistance of a switched CMOS capacitive element to implement a high performance temperature sensor.

A high temperature dry block temperature calibrator relates to the technical field of temperature calibration. The high temperature dry block temperature calibrator includes a high temperature furnace, a control board module, a system board module, a measuring board module, a lower support, and a housing. The high temperature furnace and the control board module are mounted on the lower support. The system board module and the measuring board module are mounted on the front side surface of the housing. The housing is clipped to the periphery of the lower support and the high temperature furnace and the control board module are accommodated in the housing. The modules are independent of each other and can be removed separately, thereby facilitating maintenance and replacement. The high temperature dry block temperature calibrator can be used for calibrating the temperature of a high temperature element to be measured.

The present invention provides a thermocouple probe (10). The probe includes a first pair of thermocouple wires (50) joined to form a first thermocouple junction (56) at a sensing tip (14) of the thermocouple probe and a cooling arrangement (20) defining a cooling pathway (34) adjacent to a cooled portion of the probe. The sensing tip projects beyond the cooling arrangement and is cooled during use by conduction to the cooled portion of the probe. The probe further includes a second pair of thermocouple wires (54) joined to form a second thermocouple junction (52) in the cooled portion of the probe and adjacent to the sensing tip. The present invention also provides a method and a system for determining the gas temperature (Tg) in a high temperature environment, such as a jet engine.

The present invention provides a thermocouple probe (10). The probe includes a first pair of thermocouple wires (50) joined to form a first thermocouple junction (56) at a sensing tip (14) of the thermocouple probe and a cooling arrangement (20) defining a cooling pathway (34) adjacent to a cooled portion of the probe. The sensing tip projects beyond the cooling arrangement and is cooled during use by conduction to the cooled portion of the probe. The probe further includes a second pair of thermocouple wires (54) joined to form a second thermocouple junction (52) in the cooled portion of the probe and adjacent to the sensing tip. The present invention also provides a method and a system for determining the gas temperature (Tg) in a high temperature environment, such as a jet engine.

A temperature sensor for a cold reference junction of a thermocouple is provided that may be incorporated permanently or removeably in a releasable connector having a first connector part arranged to engage releasably with a second connector part in which the thermocouple conductors terminate, so forming a cold reference junction for the thermocouple. When the two parts of the connector are engaged, the temperature sensor of the present invention is able to sense the temperature in the vicinity of a cold reference junction in the connector. The temperature sensor may be provided by embedding one or more thermistors into a flexible disk or plate-like seal able to fit around the conductors of the first connector part such that the thermistors make electrical contact with selected conductors of the first connector part and thermal contact with the cold reference junction.

A temperature sensor for a cold reference junction of a thermocouple is provided that may be incorporated permanently or removeably in a releasable connector having a first connector part arranged to engage releasably with a second connector part in which the thermocouple conductors terminate, so forming a cold reference junction for the thermocouple. When the two parts of the connector are engaged, the temperature sensor of the present invention is able to sense the temperature in the vicinity of a cold reference junction in the connector. The temperature sensor may be provided by embedding one or more thermistors into a flexible disk or plate-like seal able to fit around the conductors of the first connector part such that the thermistors make electrical contact with selected conductors of the first connector part and thermal contact with the cold reference junction.

A pad-equipped thermocouple includes a sheathed thermocouple in which a pair of thermocouple elements and an inorganic insulating powder for holding the thermocouple elements are accommodated in a sheath. An opening of the sheath is sealed by a sealing member. A pad is welded to a pipe and configured to hold the sheathed thermocouple to a surface of the pipe. A temperature measuring junction formed by the pair of thermocouple elements is exposed to a side face of the sheath in a leading end portion. The pad includes an accommodation portion accommodating the leading end portion such that the leading end portion can be inserted into and pulled out from the accommodation portion along the surface of the pipe, and the accommodation portion accommodates the leading end portion in a state where the temperature measuring junction and the surface of the pipe are in contact with each other.

A pad-equipped thermocouple includes a sheathed thermocouple in which a pair of thermocouple elements and an inorganic insulating powder for holding the thermocouple elements are accommodated in a sheath. An opening of the sheath is sealed by a sealing member. A pad is welded to a pipe and configured to hold the sheathed thermocouple to a surface of the pipe. A temperature measuring junction formed by the pair of thermocouple elements is exposed to a side face of the sheath in a leading end portion. The pad includes an accommodation portion accommodating the leading end portion such that the leading end portion can be inserted into and pulled out from the accommodation portion along the surface of the pipe, and the accommodation portion accommodates the leading end portion in a state where the temperature measuring junction and the surface of the pipe are in contact with each other.

A pad-equipped thermocouple includes a sheathed thermocouple in which a pair of thermocouple elements and an inorganic insulating powder for holding the thermocouple elements are accommodated in a sheath. An opening of the sheath is sealed by a sealing member. A pad is welded to a pipe and configured to hold the sheathed thermocouple to a surface of the pipe. A temperature measuring junction formed by the pair of thermocouple elements is exposed to a side face of the sheath in a leading end portion. The pad includes an accommodation portion accommodating the leading end portion such that the leading end portion can be inserted into and pulled out from the accommodation portion along the surface of the pipe, and the accommodation portion accommodates the leading end portion in a state where the temperature measuring junction and the surface of the pipe are in contact with each other.

A pad-equipped thermocouple includes a sheathed thermocouple in which a pair of thermocouple elements and an inorganic insulating powder for holding the thermocouple elements are accommodated in a sheath. An opening of the sheath is sealed by a sealing member. A pad is welded to a pipe and configured to hold the sheathed thermocouple to a surface of the pipe. A temperature measuring junction formed by the pair of thermocouple elements is exposed to a side face of the sheath in a leading end portion. The pad includes an accommodation portion accommodating the leading end portion such that the leading end portion can be inserted into and pulled out from the accommodation portion along the surface of the pipe, and the accommodation portion accommodates the leading end portion in a state where the temperature measuring junction and the surface of the pipe are in contact with each other.