Abstract: A corrosion rate measurement system includes a sacrificial probe configured to be exposed to a corrosive material. A sensor is arranged to detect physical changes in the sacrificial probe due to corrosion of the sacrificial probe from the corrosive material. Measurement circuitry is connected to the sensor and provides an output indicative of a corrosion rate of the sacrificial probe from exposure to the corrosive material. The sacrificial probe has a physical characteristic which causes the sacrificial probe to corrode at a non-linear rate.

Abstract: A field device for monitoring a process variable of an industrial process includes an image capture device. A process component exhibits relative motion as a function of a process variable. The image captures device captures an image which changes due to the relative motion of the process component. An image processor coupled to the image capture device detects relative motion of the process component and measures the process variable based upon the detected relative motion. Output circuitry provides an output related to the measured process variable.

Abstract: A corrosion measurement system includes a corrosion sensor having a corrosion sensor output related to corrosion due to exposure to a process fluid. A process variable sensor provides a process variable output related to a process variable of the process fluid. Measurement circuitry coupled to the corrosion sensor and the process variable sensor provides an output related to corrosion based upon the corrosion sensor output and the process variable output.

Abstract: A process variable transmitter for sensing a process variable of process fluid in an industrial process includes a process gasket having a surface configured to form a seal with a process vessel face. The process gasket is exposed to the process fluid through an opening in the process vessel face. A process variable sensor is carried by the process gasket and configured to sense a process variable of the process fluid and provide a sensor output. Measurement circuitry coupled to the process variable sensor provides a process variable transmitter output related to the process variable output.

Abstract: A process variable transmitter for sensing a process variable of process fluid in an industrial process includes a process gasket having a surface configured to form a seal with a process vessel face. The process gasket is exposed to the process fluid through an opening in the process vessel face. A process variable sensor is carried by the process gasket and configured to sense a process variable of the process fluid and provide a sensor output. Measurement circuitry coupled to the process variable sensor provides a process variable transmitter output related to the process variable output.

Abstract: A process device for coupling to an industrial process for use in monitoring or controlling the process includes a device housing configured to physically couple to the industrial process. A process variable sensor is configured to measure a process variable and measurement circuitry coupled to the process variable sensor provides an output related to the sensed process variable. A piezoelectric transducer provides an electrical output related to pressure pulsations in the industrial process. Electrical circuitry in the housing includes an input configured to receive the electrical output from the piezoelectric sensor.

Abstract: A process variable indicator is provided. The process variable indicator includes a process variable sensor having an electrical characteristic that varies with the process variable. Measurement circuitry is coupled to the process variable sensor and is configured to provide an indication relative to the electrical characteristic. A processor is coupled to the measurement circuitry and is configured to compute a process variable based on the indication and determine, among a plurality of ranges, which range the process variable is within. The processor generates a local visual output based on the process variable and the determined range. A method of visually indicating a process variable is also provided.

Abstract: A corrosion rate measurement system includes a first membrane of a first material configured to be exposed to a corrosive material and deflect in response to corrosion. A second membrane is configured to be exposed to a corrosive material and deflect in response to corrosion. A pressure sensor is operably coupled to at least one of the first and second membranes and configured to measure deflection of at least one of the first and second membranes as a function of a pressure and an amount of corrosion at least one of the first and second membranes.

Abstract: A process fluid pressure measurement probe includes a pressure sensor formed of a single-crystal material and mounted to a first metallic process fluid barrier and disposed for direct contact with a process fluid. The pressure sensor has an electrical characteristic that varies with process fluid pressure. A feedthrough is formed of a single-crystal material and has a plurality of conductors extending from a first end to a second end. The feedthrough is mounted to a second metallic process fluid barrier and is spaced from, but electrically coupled to, the pressure sensor. The pressure sensor and the feedthrough are mounted such that the secondary metallic process fluid barrier is isolated from process fluid by the first metallic process fluid barrier.

Abstract: A multivariable fluid level detection system comprising a guided wave radar probe with sensor or sensors integral to the probe for producing sensor signal(s), a transmitter for transmitting guided microwave pulses down the probe, a receiver for receiving reflected microwave pulses, and a processor for producing a measurement of fluid level based upon a time difference between transmission of a pulse and receipt of a reflected pulse and the sensor signal(s).

Abstract: A coplanar process fluid pressure sensor module is provided. The module includes a coplanar base and a housing body. The coplanar base has a pair of process fluid pressure inlets, each having an isolator diaphragm. The housing body is coupled to the coplanar base at an interface between the coplanar base and the housing body. A differential pressure sensor is operably coupled to the pair of process fluid pressure inlets, and is disposed proximate the coplanar base within the housing body.

Abstract: An isolator system for a pressure transmitter includes a port internal to the transmitter, a sensor tube, and a fill tube. The sensor tube is connected to the port to fluidly connect a passageway through a transmitter body to a pressure sensor. The sensor tube includes a first end disposed in the port. The first end has a first cross-sectional area. The fill tube is internal to the transmitter and connected to the port to fluidly connect to the passageway. The fill tube includes a second end disposed in the port. The second end of the fill tube has a second cross-sectional area that is less than the first cross-sectional area of the sensor tube.

Abstract: A method of verifying a condition of a single-crystal pressure sensor is provided. The method includes providing a single-crystal pressure sensor that has at least one electrical characteristic that varies with applied pressure being coupled to a first output and a second output. The pressure sensor also has at least one resistive element therein. A current is applied through the resistive element to heat the pressure sensor. At least one output of the pressure sensor is monitored to determine a response of the pressure sensor to current-induced heat. A verification output is provided based on the response.

Abstract: A process variable indicator is provided. The process variable indicator includes a process variable sensor having an electrical characteristic that varies with the process variable. Measurement circuitry is coupled to the process variable sensor and is configured to provide an indication relative to the electrical characteristic. A processor is coupled to the measurement circuitry and is configured to compute a process variable based on the indication and determine, among a plurality of ranges, which range the process variable is within. The processor generates a local visual output based on the process variable and the determined range. A method of visually indicating a process variable is also provided.

Abstract: A corrosion measurement system includes a corrosion sensor having a corrosion sensor output related to corrosion due to exposure to a process fluid. A process variable sensor provides a process variable output related to a process variable of the process fluid.

Abstract: A process fluid pressure measurement probe includes a pressure sensor formed of a single-crystal material and mounted to a first metallic process fluid barrier and disposed for direct contact with a process fluid. The pressure sensor has an electrical characteristic that varies with process fluid pressure. A feedthrough is formed of a single-crystal material and has a plurality of conductors extending from a first end to a second end. The feedthrough is mounted to a second metallic process fluid barrier and is spaced from, but electrically coupled to, the pressure sensor. The pressure sensor and the feedthrough are mounted such that the secondary metallic process fluid barrier is isolated from process fluid by the first metallic process fluid barrier.

Abstract: During manufacturing a unique encrypted authentication code is created for each product based upon device specific information relating to that product. The unique encrypted authentication code together with the device specific information is stored in a database, and a representation of the unique encrypted authentication code is stored on the product. To determine whether a product in question is authentic, the readable representation of the unique encrypted authentication code is read and sent to a server along with a request for product authentication. The server provides an indication of authenticity of the product in question based upon the unique encrypted authentication code received and the device specific information associated with that unique encrypted authentication code in the database.

Abstract: A sensor system for sensing a process variable of fluid at a first location including a variable resonator disposed at the first location having a resonant frequency which varies in response to the process variable of the fluid and responsively provides a resonant acoustic signal at the resonant frequency indicative of the process variable. An acoustic sensor disposed at a second location which is spaced apart from the variable resonator is configured to receive the resonant acoustic signal transmitted from the variable resonator. Measurement circuitry coupled to the acoustic sensor configured to provide a process variable output related to the process variable of the fluid in response to the received resonant acoustic signal.

Abstract: A process fluid pressure measurement probe includes a pressure sensor formed of a single-crystal material and mounted to a first metallic process fluid barrier and disposed for direct contact with a process fluid. The pressure sensor has an electrical characteristic that varies with process fluid pressure. A feedthrough is formed of a single-crystal material and has a plurality of conductors extending from a first end to a second end. The feedthrough is mounted to a second metallic process fluid barrier and is spaced from, but electrically coupled to, the pressure sensor. The pressure sensor and the feedthrough are mounted such that the secondary metallic process fluid barrier is isolated from process fluid by the first metallic process fluid barrier.

Abstract: A corrosion rate measurement system includes a sacrificial probe configured to be exposed to a corrosive material. A sensor is arranged to detect physical changes in the sacrificial probe due to corrosion of the sacrificial probe from the corrosive material. Measurement circuitry is connected to the sensor and provides an output indicative of a corrosion rate of the sacrificial probe from exposure to the corrosive material. The sacrificial probe has a physical characteristic which causes the sacrificial probe to corrode at a non-linear rate.