Abstract: A system includes a magnetostrictive sensor having a sensor head including a driving pole. The driving pole includes a driving coil that may receive a driving current and may emit a magnetic flux portion through a rotary structure. The sensor head also includes a sensing pole including a sensing coil that may receive the magnetic flux portion and may transmit a signal based at least in part on the received magnetic flux portion. The received magnetic flux portion is based at least in part on a force on the rotary structure. The sensor head also includes a temperature sensor disposed on the sensor head. The temperature sensor may measure a temperature of the rotary structure.

Abstract: A system includes a magnetostrictive sensor. The magnetostrictive sensor includes a driving coil configured to receive a first driving current and to emit a first magnetic flux portion through a target and a second magnetic flux portion. The magnetostrictive sensor also includes a first sensing coil configured to receive the first magnetic flux portion and to transmit a signal based at least in part on the received first magnetic flux portion. The received first magnetic flux portion is based at least in part on a force on the target. The magnetostrictive sensor further includes a magnetic shield disposed between the driving coil and the first sensing coil. The magnetic shield is configured to reduce the second magnetic flux portion received by the first sensing coil.

Abstract: A circuit for calibrating a current transducer may include a first resistor and a second resistor, such that the first resistor and the second resistor may adjust a measurement output by a current sensor. The first resistor and the second resistor may adjust the measurement output by adjusting a phase of the measurement output and/or adjusting a sensitivity of the measurement output. The circuit may also include a first terminal and a second terminal, such that the first terminal may be electrically coupled to the first resistor and the second resistor. Here, the first terminal may receive the measurement output by the current sensor, and the second terminal may output the adjusted measurement output.

Abstract: A shield for protecting a current transducer from noise may include a first annular ring that may be disposed adjacent to a first side of a current sensor. The shield may also include a second annular ring that may be disposed adjacent to a second side of the current sensor opposite the first side, such that the first and second annular rings each include magnetically permeable material.

Abstract: Integrated penetrator and proximity sensor probe assemblies are provided for monitoring a position of a rotating target within a subsea rotating device such as subsea motors and pumps. The integrated penetrator and proximity sensor probe assemblies are configured to communicate information related to the position of the rotating target through a wall of the device housing, and can be inserted through an opening in the wall of the device housing and mounted to the wall of the device to position a proximity sensor tip assembly adjacent the rotating target. The proximity sensor probe assemblies are pressure-compensated and configured to withstand subsea pressures and conditions.

Abstract: Sensor assemblies, electrical penetrator assemblies and associated methods are provided for monitoring operational characteristics of subsea rotating devices such as subsea motors and pumps. Pressure-compensated proximity sensors configured to withstand subsea pressures are disposed adjacent a subsea rotating shaft for directly monitoring a position of the rotating shaft during dynamic operation thereof. A sensor tip assembly includes a sensor cap and a sensing element therein configured to produce a signal indicative of a distance between the sensor cap and the rotating shaft. A substantially incompressible fluid is disposed within a fluid reservoir within a sensor housing, and fluidly communicates with the sensor cap such that at least a portion of an internal pressure within the sensor housing is applied to interior portions of the sensor cap. The sensor housing is configured such that the internal pressure increases in response to an increase in an external pressure of the sensor housing.

Abstract: Sensor assemblies and methods of assembling and using the sensor assemblies are provided for monitoring operational characteristics of subsea rotating devices such as subsea motors and pumps. Pressure-compensated proximity sensor tip assemblies configured to withstand subsea pressures are mounted adjacent a subsea rotating shaft for directly monitoring a position of the rotating shaft during dynamic operation thereof. An end of a sensor housing opposite a sensor tip assembly is mounted to a wall of the device housing. The sensor housing defines a fluid reservoir containing a substantially incompressible fluid therein that is in fluid communication with the interior portions of the proximity sensor tip assembly. A length of the sensor housing is adjusted to accommodate a distance between the wall of the device housing and the rotating shaft.

Abstract: A system includes first, second, third and fourth capacitive sensors, each disposed about a longitudinal axis. The first capacitive sensor is disposed along a first axis radial to the longitudinal axis, and the third capacitive sensor is disposed along the first axis opposite the first capacitive sensor. The second capacitive sensor is disposed along a second axis radial to the longitudinal axis, the fourth capacitive sensor is disposed along the second axis opposite the second capacitive sensor, and the second axis is different from the first axis. Each capacitive sensor is configured to transmit a respective signal based at least in part on a position of a rotational component along the respective axis relative to the longitudinal axis.

Abstract: A system includes a magnetostrictive sensor. The magnetostrictive sensor includes a driving coil configured to receive a first driving current and to emit a first magnetic flux portion through a target and a second magnetic flux portion. The magnetostrictive sensor also includes a first sensing coil configured to receive the first magnetic flux portion and to transmit a signal based at least in part on the received first magnetic flux portion. The received first magnetic flux portion is based at least in part on a force on the target. The magnetostrictive sensor further includes a magnetic shield disposed between the driving coil and the first sensing coil. The magnetic shield is configured to reduce the second magnetic flux portion received by the first sensing coil.

Abstract: A system includes a sensor configured to detect an electrical leakage current associated with an operation of an industrial machine. The sensor includes a core and a first winding encircling a first portion of the core. The first winding includes a first number of turns. The first winding is configured to obtain a set of electrical current measurements associated with the operation of the industrial machine. The sensor includes a second winding encircling a second portion of the core. The second winding includes a second number of turns. The second winding is configured to obtain the set of electrical current measurements associated with the operation of the industrial machine. The first winding and the second winding are each configured to generate respective outputs based on the set of electrical current measurements. The respective outputs are configured to be used to reduce the occurrence of a distortion of the set of electrical current measurements based on a temperature of the core.

Abstract: A system includes a monitoring and/or protection system that includes an insulation derivation circuit. The insulation derivation circuit is configured to derive a first temperature compensation curve based on a first temperature and a first current, and the monitoring and/or protection system is configured to communicatively couple to a first current sensor configured to sense the first current traversing a first phase of a stator winding of a motor, a generator, or a combination thereof. The insulation derivation circuit is also configured to communicatively couple to a first temperature sensor configured to sense the first temperature of the stator when the stator is energized, and the temperature compensation curve is configured to map a temperature to a leakage dissipation factor.

Abstract: A system includes a plurality of sensors configured to detect an electrical voltage and an electrical leakage current associated with an operation of an industrial machine, and a controller including a processor and a selection device. The selection device is configured to receive from the plurality of sensors a first input corresponding to the electrical voltage, and a second input corresponding to the electrical leakage current. The first input is paired with the second input to generate a paired input. The selection device is configured to transmit an output to the processor based at least in part on the paired input. The output includes an indication of the electrical leakage current or a dissipation factor associated with the industrial machine.

Abstract: A shield for protecting a current transducer from noise may include a first annular ring that may be disposed adjacent to a first side of a current sensor. The shield may also include a second annular ring that may be disposed adjacent to a second side of the current sensor opposite the first side, such that the first and second annular rings each include magnetically permeable material.

Abstract: A circuit for calibrating a current transducer may include a first resistor and a second resistor, such that the first resistor and the second resistor may adjust a measurement output by a current sensor. The first resistor and the second resistor may adjust the measurement output by adjusting a phase of the measurement output and/or adjusting a sensitivity of the measurement output. The circuit may also include a first terminal and a second terminal, such that the first terminal may be electrically coupled to the first resistor and the second resistor. Here, the first terminal may receive the measurement output by the current sensor, and the second terminal may output the adjusted measurement output.

Abstract: A system including a non-intrusive capacitive voltage sensor configured to couple to an insulator surrounding a metal conductor, wherein the non-intrusive capacitive voltage sensor is configured to produce a voltage signal indicative of a voltage in the metal conductor, and a monitor-controller system configured to receive the voltage signal from the non-intrusive capacitive voltage sensor, wherein the monitor-controller system is configured to use the voltage signal to monitor or control a machine.

Abstract: In one embodiment, a current transducer is provided. The current transducer includes a magnetic core configured to at least partially encircle a magnetic flux generated by a conductor. At least one coil is coupled to the magnetic core and the magnetic core comprises a superm-alloy material.

Abstract: A spring mounting element is provided having an inner ring with an inner radial circumference and an outer radial circumference, and an outer ring having an inner radial circumference and an outer radial circumference. A plurality of supporting elements are attached to and symmetrically disposed around the outer radial circumference of the inner ring, and attached to the inner radial circumference of the outer ring. The plurality of supporting elements allow the inner ring to move in three dimensions.

Abstract: A sensor assembly is described herein. The sensor assembly includes a housing that includes an inner surface that defines a cavity within the housing, and a proximity sensor positioned within the cavity. The proximity sensor includes a first connector, a second connector, and a substantially planar sensing coil that extends between the first connector and the second connector. The sensing coil extends outwardly from the first connector such that the second connector is radially outwardly from the first connector.

Abstract: An inductor and an eddy current sensor including an inductor are disclosed. The inductor includes a patterned metal layer arranged on an insulating substrate. The inductor is capable of sensing eddy current within a high temperature region.

Abstract: A spring mounting element is provided having an inner ring with an inner radial circumference and an outer radial circumference, and an outer ring having an inner radial circumference and an outer radial circumference. A plurality of supporting elements are attached to and symmetrically disposed around the outer radial circumference of the inner ring, and attached to the inner radial circumference of the outer ring. The plurality of supporting elements allow the inner ring to move in three dimensions.