Abstract: A pressure containment assembly for use with a plurality of sensor assemblies for monitoring a parameter within a pressure vessel is disclosed. The pressure containment assembly includes a primary seal plate to seal against pressure in the pressure vessel and a plurality of passageways to receive the sensor assemblies. The containment assembly also includes a secondary seal cap connected to the process plate and covering the passageways. The seal cap includes a recessed region that is oriented such that, when the seal cap is sealed to the primary seal plate, the recessed region creates a sealed pressure containment chamber.

Abstract: A temperature sensing assembly includes a sheath defining an interior space, a first temperature sensor and a second temperature sensor. The first temperature sensor has first and second conductors extending within the interior space of the sheath and joined at a first junction point. The first conductor is constructed of a first material and the second conductor is constructed of a second material that is different than the second material. The second temperature sensor has third and fourth conductors extending within the interior space of the sheath and joined at a second junction point. The third conductor is constructed of a third material and the fourth conductor is constructed of a fourth material that is different than the fourth material. The first material is different than each of the third and fourth materials. The first junction point is adjacent to the second junction point.

Abstract: A temperature sensing assembly includes a sheath defining an interior space, a first temperature sensor and a second temperature sensor. The first temperature sensor has first and second conductors extending within the interior space of the sheath and joined at a first junction point. The first conductor is constructed of a first material and the second conductor is constructed of a second material that is different than the second material. The second temperature sensor has third and fourth conductors extending within the interior space of the sheath and joined at a second junction point. The third conductor is constructed of a third material and the fourth conductor is constructed of a fourth material that is different than the fourth material. The first material is different than each of the third and fourth materials. The first junction point is adjacent to the second junction point.

Abstract: A temperature sensing assembly includes a sheath defining an interior space, a first temperature sensor and a second temperature sensor. The first temperature sensor has first and second conductors extending within the interior space of the sheath and joined at a first junction point. The first conductor is constructed of a first material and the second conductor is constructed of a second material that is different than the second material. The second temperature sensor has third and fourth conductors extending within the interior space of the sheath and joined at a second junction point. The third conductor is constructed of a third material and the fourth conductor is constructed of a fourth material that is different than the fourth material. The first material is different than each of the third and fourth materials. The first junction point is adjacent to the second junction point.

Abstract: In one aspect, a temperature sensing assembly for measuring temperature of a surface of a structure includes a thermocouple device and a docking device. The thermocouple device includes a temperature sensing junction point disposed within an elongate sheath to measure the temperature of the surface of the structure at a desired location. The thermocouple device further comprises a contact portion configured to contact the surface of the structure. The docking device has a bottom surface to attach to the surface of the structure adjacent the desired location. A line extends through the center of the sheath and the sheath has a cross-sectional area in a plane perpendicular to the line. The contact portion is configured such that, when the docking device is coupled to the surface, an area of contact between the contact portion and the surface of the structure is greater than the cross-sectional area of the sheath.

Abstract: In one aspect, a temperature sensing assembly for measuring temperature of a surface of a structure includes a thermocouple device and a docking device. The thermocouple device includes a temperature sensing junction point disposed within an elongate sheath to measure the temperature of the surface of the structure at a desired location. The thermocouple device further comprises a contact portion configured to contact the surface of the structure. The docking device has a bottom surface to attach to the surface of the structure adjacent the desired location. A line extends through the center of the sheath and the sheath has a cross-sectional area in a plane perpendicular to the line. The contact portion is configured such that, when the docking device is coupled to the surface, an area of contact between the contact portion and the surface of the structure is greater than the cross-sectional area of the sheath.

Abstract: In one aspect, a temperature sensing assembly includes a thermowell, a temperature sensor, and at least one electrically conductive element. The thermowell includes a first gas impermeable barrier element defining a first chamber and a second gas impermeable barrier element defining a second chamber. The temperature sensor is at least partially disposed within the first chamber. The at least one electrically conductive element is connected to the temperature sensor in the second chamber.

Abstract: In one aspect, a temperature sensing assembly includes a thermowell, a temperature sensor, and at least one electrically conductive element. The thermowell includes a first gas impermeable barrier element defining a first chamber and a second gas impermeable barrier element defining a second chamber. The temperature sensor is at least partially disposed within the first chamber. The at least one electrically conductive element is connected to the temperature sensor in the second chamber.

Abstract: A temperature sensing assembly includes a sheath defining an interior space, a first temperature sensor and a second temperature sensor. The first temperature sensor has first and second conductors extending within the interior space of the sheath and joined at a first junction point. The first conductor is constructed of a first material and the second conductor is constructed of a second material that is different than the second material. The second temperature sensor has third and fourth conductors extending within the interior space of the sheath and joined at a second junction point. The third conductor is constructed of a third material and the fourth conductor is constructed of a fourth material that is different than the fourth material. The first material is different than each of the third and fourth materials. The first junction point is adjacent to the second junction point.

Abstract: A temperature sensing assembly includes first and second temperature sensors disposed within an elongate mineral insulated conductive sheath. A junction point of the first temperature sensor is electrically connected to the conductive sheath. The second temperature sensor is electrically isolated from the conductive sheath. Measurements obtained from the electrically isolated temperature sensor can be used to test insulation resistance of the assembly or temperature indications from the electrically isolated temperature sensor can be compared to measurements taken from the electrically connected junction point to take a variety of corrective actions during use of the temperature sensing assembly, such as adjusting the installation of the assembly or applying correction factors to measurements obtained from one of the temperature sensors.

Abstract: An assembly includes an electrical conductor disposed within an elongate mineral insulated conductive sheath. The electrical conductor is electrically grounded to the conductive sheath. The assembly also includes a test conductor disposed within and electrically isolated from the sheath to provide an indication of the insulation resistance of the assembly.

Abstract: A temperature sensing assembly includes first and second temperature sensors disposed within an elongate mineral insulated conductive sheath. A junction point of the first temperature sensor is electrically connected to the conductive sheath. The second temperature sensor is electrically isolated from the conductive sheath. Measurements obtained from the electrically isolated temperature sensor can be used to test insulation resistance of the assembly or temperature indications from the electrically isolated temperature sensor can be compared to measurements taken from the electrically connected junction point to take a variety of corrective actions during use of the temperature sensing assembly, such as adjusting the installation of the assembly or applying correction factors to measurements obtained from one of the temperature sensors.

Abstract: A temperature sensing assembly includes first and second temperature sensors disposed within an elongate mineral insulated conductive sheath. A junction point of the first temperature sensor is electrically connected to the conductive sheath. The second temperature sensor is electrically isolated from the conductive sheath. Measurements obtained from the electrically isolated temperature sensor can be used to test insulation resistance of the assembly or temperature indications from the electrically isolated temperature sensor can be compared to measurements taken from the electrically connected junction point to take a variety of corrective actions during use of the temperature sensing assembly, such as adjusting the installation of the assembly or applying correction factors to measurements obtained from one of the temperature sensors.

Abstract: A temperature sensing assembly includes first and second temperature sensors disposed within an elongate mineral insulated conductive sheath. A junction point of the first temperature sensor is electrically connected to the conductive sheath. The second temperature sensor is electrically isolated from the conductive sheath. Measurements obtained from the electrically isolated temperature sensor can be used to test insulation resistance of the assembly or temperature indications from the electrically isolated temperature sensor can be compared to measurements taken from the electrically connected junction point to take a variety of corrective actions during use of the temperature sensing assembly, such as adjusting the installation of the assembly or applying correction factors to measurements obtained from one of the temperature sensors.

Abstract: A temperature sensing assembly for measuring the temperature of an inner wall of a high temperature vessel includes a thermocouple assembly having multiple junction points to provide indications of temperature. The assembly further includes support structures for supporting the thermocouple assembly in the interior space of the vessel and to maintain the junction points proximate the inner wall of the vessel.

Abstract: A temperature sensing assembly includes first and second temperature sensors disposed within an elongate mineral insulated conductive sheath. A junction point of the first temperature sensor is electrically connected to the conductive sheath. The second temperature sensor is electrically isolated from the conductive sheath. Measurements obtained from the electrically isolated temperature sensor can be used to test insulation resistance of the assembly or temperature indications from the electrically isolated temperature sensor can be compared to measurements taken from the electrically connected junction point to take a variety of corrective actions during use of the temperature sensing assembly, such as adjusting the installation of the assembly or applying correction factors to measurements obtained from one of the temperature sensors.

Abstract: A temperature sensing assembly for measuring the temperature of an inner wall of a high temperature vessel includes a thermocouple assembly having multiple junction points to provide indications of temperature. The assembly further includes support structures for supporting the thermocouple assembly in the interior space of the vessel and to maintain the junction points proximate the inner wall of the vessel.

Abstract: A temperature sensing assembly for measuring the temperature of a surface of a structure includes a thermocouple device having a sheath containing a pair of conductors of dissimilar materials connected at a junction point to provide indications of temperature. The assembly further includes a docking device with a recess formed in a top surface to receive a portion of the sheath that is proximate the junction point. The bottom surface of the docking device is attached to the surface of the structure. The recess extends through the bottom surface of the docking device so that when the thermocouple device is positioned in the recess, the junction point is adjacent the surface of the tube. A heat shield can be attached to the docking device to shield the sheath proximate the junction point from direct and radiant heat sources.

Abstract: A temperature sensing assembly utilizing a multipoint thermocouple. The assembly comprises a vessel, e.g. a chemical reaction pressure vessel, into which a thermocouple is inserted. The thermocouple utilizes an elongated sheath having a plurality of sensors therein. The sensors are arranged to detect temperature at a plurality of unique locations within the vessel.