Abstract: A process fluid sensing assembly includes a process fluid conduit having a pair of flanged connections and a mounting bracket mounted to at least two process flange studs of at least one flanged connection. A field device is mounted to the mounting bracket. A wedge-type flow meter as well as a method of coupling a field device to at least one process flange is also provided.

Abstract: A smart conduit plug includes a plug body having an externally threaded region and a diameter and thread pitch to engage a conduit port. At least one electrical component is mounted relative to the plug body and is configured to electrically couple to a field device and provide an indication relative to the field device.

Abstract: A temperature probe includes a mineral-insulated cable having a metallic outer sheath surrounding a mineral insulation therein. The mineral-insulated cable has a plurality of conductors running through the mineral insulation. A temperature sensitive element has a pair of lead wires. An insert has at least one conduit to receive the pair of lead wires of the temperature sensitive element. The insert also has a recess configured to receive the temperature sensitive element. An insert sheath is configured to slide over the insert and has a first end configured to couple to the metallic outer sheath of the mineral-insulated cable and a second end. An endcap is attached to the second end of the insert sheath. The insert is configured to urge the temperature sensitive element into contact with the endcap.

Abstract: A current limiting circuit for limiting a current through a pair of terminals powered from a 2-wire Advanced Physical Layer (APL) spur includes a current source, a first current limiter and a second current limiter. The current source is connected to one of the terminals and is configured to source a current that is conducted through the terminals and has an amplitude that is at a current source threshold. The first current limiter is connected to the current source and is configured to limit the amplitude below a first threshold. The second current limiter is connected to the first current limiter and is configured to limit the amplitude below a second threshold.

Abstract: A wireless field device for use in an industrial process includes input/output terminals to couple to a process interface element and a discrete input/output channel to receive a discrete input signal from the process interface element when configured as a discrete input channel, the discrete input/output channel further configured to provide a discrete output to the process interface element when configured as discrete output channel. Wireless communication circuitry transmits and receives information. A controller transmits information through the communication circuitry based upon a sensed process variable, provides a discrete output signal when the discrete input/output channel is configured as a discrete output channel and receives a discrete input signal when configured as a discrete input channel. An external power supply input couples to an external power supply and a battery power supply input couples a battery.

Abstract: A process variable transmitter for sensing a cryogenic temperature in an industrial process includes a cryogenic temperature sensor configured to be thermally coupled to an industrial process. The cryogenic temperature sensor has an electrical resistance which changes in response to changes in a cryogenic temperature and the industrial process is at the cryogenic temperature. Resistance measurement circuitry is electrically coupled to the cryogenic temperature sensor and measures a sensor resistance over a resistance range and responsively provides an output related to temperature based upon the measured resistance. Transmitter output circuitry coupled to the measurement circuitry to transmits information related to the cryogenic temperature to a remote location.

Abstract: A field device mount includes a union configured to couple to a field device. A clamp foot is coupled to the union and is configured to engage fluid handling equipment. A tensioner assembly is coupled to the clamp foot and includes a tensioner bracket. A biasing member is disposed to urge the tensioner bracket away from the clamp foot. A band is configured to pass around the fluid handling equipment and to couple to opposite sides of the tensioner bracket. A buckle is configured to provide clamping force to maintain tension in the band. A field device mount using inline tensioners or a v-bolt as well as a method of coupling a field device mount to fluid handling equipment are also provided.

Abstract: A guided-wave level measurement system for hygienic applications is provided. The system includes an electronics housing and system electronics disposed within the electronics housing and configured to generate a radar signal. A probe is coupled to the electronics and includes a waveguide configured to extend into a process vessel. A sheath is configured to receive the probe and extend into the process vessel.

Abstract: A field device for an industrial process includes a digital isolator which electrically divides the field device into a primary side for low voltage electronics from a secondary side. A device power supply located in the secondary side is configured to provide power to a process control device which monitors or controls a process variable of the industrial process. A latching relay located in the secondary side couples to the process control device and the device power supply and has a set input to responsively couple the device power supply to the process control device and a reset input which causes the latching relay to enter an electrically open state to thereby disconnect the device power supply from the process control device. A controller located in the primary side is configured to generate a switch signal.

Abstract: A field device for an industrial process includes field device circuitry, an APL communication circuit, and a power circuit. The power circuit includes a power regulator configured to regulate DC power that powers the field device circuitry and the APL communication circuit, a main power sensor configured to generate a main power signal that corresponds to the DC power, a voltage shunt regulator configured to divert excess power to a circuit common, and an excess power sensor configured to generate an excess power signal that corresponds to a magnitude of the excess power. The power regulator adjusts the DC power based on the main power signal and the excess power signal.

Abstract: A process fluid temperature estimation system includes a mounting assembly configured to mount the process fluid temperature estimation system to an external surface of a process fluid conduit. A sensor capsule has at least one temperature sensitive element disposed therein and is configured to sense at least a temperature of the external surface of the process fluid conduit. Measurement circuitry is coupled to the sensor capsule and is configured to detect a characteristic of the at least one temperature sensitive element that varies with temperature and provide sensor capsule temperature information.

Abstract: A process variable transmitter is provided. The process variable transmitter includes a process variable sensor, and an electronics board having circuitry electrically coupled to the process variable sensor. The process variable transmitter also includes a shroud that holds the electronics board, and at least one stop feature to provide vibration damping. A method of manufacturing a process variable transmitter is provided. The method includes providing a process variable sensor. The method also includes providing an electronics board having circuitry configured to electrically couple to the process variable sensor. The method further includes forming a shroud to hold the electronics board, and forming at least one stop feature to support the electronics board when the electronics board is in the shroud.

Abstract: A method of manufacturing a pressure sensor for sensing a pressure of a process fluid includes obtaining a sensor body having a sensor cavity formed therein. A metal tube is placed through an opening in the sensor body into the sensor cavity. A rod is placed through the metal tube and into the sensor cavity. The sensor cavity is at least partially filled with a dielectric material and the dielectric material completely covers the metal tube carried in the sensor cavity and a portion of the rod. The rod is removed and thereby forming a dielectric passageway which is fluidically coupled to the metal tube. The sensor cavity is sealed with a deflectable diaphragm which is configured to deflect in response to applied pressure from the process fluid. A differential pressure sensor for sensing a differential pressure of a process fluid includes a sensor body having a sensor cavity formed therein is also provided.

Abstract: A wireless field device for use in an industrial process includes input/output terminals configured to couple to a process interface element. A discrete input/output channel is configured to receive a discrete input signal from the process interface element through the input/output terminals when configured as a discrete input channel. The discrete input/output channel is further configured to provide a discrete output to the process interface element through the input/output terminals when configured as discrete output channel. Wireless communication circuitry transmits and receives information.

Abstract: A pH sensing probe that is configured to be exposed to a process fluid is provided. The pH sensing probe includes a sensor body and a pH glass electrode mounted to the sensor body. A reference electrode has a junction mounted to the sensor body that is configured to be exposed to the process fluid. A backup pH electrode is mounted to the sensor body and configured to be exposed to the process fluid. A pH sensing system and a method of operating a pH sensing system are also provided. In one example, the backup pH electrode is an ISFET electrode that can be automatically switched to when the pH glass electrode is compromised.

Abstract: An improved oxygen analyzer includes a controller configured to receive an oxygen sensor signal and provide an oxygen concentration output. A probe is configured to extend into a source of combustion process gas. An oxygen sensor is disposed within the probe and has a sensing electrode mounted to one side of a solid electrolyte and a reference electrode mounted to an opposite side of the solid electrolyte. The oxygen sensor has catalytic beads that are configured to be disposed between the process gas and the sensing electrode. Measurement circuitry is operably coupled to the oxygen sensor and the controller and is configured to provide the controller with the oxygen sensor signal based on an electrical response of the oxygen sensor. The controller is configured to detect a behavior of the oxygen sensor concentration output over time to provide at least one ancillary output.

Abstract: An Advanced Physical Layer (APL) adapter for enabling functional interconnection of a 2-wire APL spur to at least one industrial process legacy field device includes a first pair of terminals, APL physical layer (PHY) circuitry, a second pair of terminals and connectivity circuitry. The first pair of terminals is configured for connection to the 2-wire APL spur. The APL PHY circuitry is capacitively coupled to the first pair of terminals. The connectivity circuitry is configured to communicate with a legacy field device connected to the second pair of terminals in accordance with a legacy communication protocol and control the APL PHY circuitry to communicate through the first pair of terminals in accordance with an Ethernet protocol.

Abstract: A process variable transmitter includes a process variable sensor, and an electromagnetic interference (EMI) protection circuit coupled to the process variable sensor. The process variable transmitter also includes a hermetic module enclosing the EMI protection circuit, and electrical connectors coupled to the EMI protection circuit within the hermetic module. The electrical connectors are configurable from outside the hermetic module to connect electronic components of the EMI protection circuit in a configuration that provides transient protection.

Abstract: A wireless process variable transmitter for use in an industrial process includes a process variable sensor configured to sense a process variable of the industrial process and provide a process variable sensor output. A battery power source includes a plurality of battery power banks each having a primary cell battery, a low voltage cut-off circuit electrically connected to the primary cell battery which provides an electrical connection to the primary cell battery while a voltage of the primary cell battery is above a threshold, and an ideal diode having an input electrically connected to the primary cell battery through the low voltage cut-off and providing a power bank output. A power sharing node has an input connected to the battery power bank output of each of the plurality of battery power banks and having a shared power output which provides power to circuitry of the wireless process variable transmitter.