摘要:
A manifold includes a body having generally planar inlet surface. The inlet surface includes a first inlet and a second inlet adapted for coupling to a pressurized process fluid. An outlet surface on the manifold is adapted for coupling to a co-planar transmitter and is at angle relative to the inlet surface. The manifold includes an equalizing valve surface opposite the outlet surface, and a perimeter therebetween. The outlet surface includes first and second outlets in fluid communication with the first and second inlets, respectively.
摘要:
A sensor capsule suitable for use in an industrial process fluid transmitter. The sensor capsule includes a block that has a sensor mounting hole. The block includes two half-blocks joined along mating surfaces passing lengthwise through the sensor mounting hole. A sensor has a sensor neck passing through the sensor mounting hole. The sensor neck is sealed to the sensor mounting hole.
摘要:
A pressure transmitter produces signals indicative of a flow in a pipe. The transmitter has a pressure sensor that is fluidly coupled to two ports in the pipe, and the pipe has a substantially constant cross-section between the two ports. Aspects of the invention include a circuit coupled to the pressure sensor that produces a digital value related to the fluid flow as a function of the pressure difference between the two ports.
摘要:
A transmitter provides an output that is indicative of pressure and has two modular transmitter bodies, one including a sensor, and the other having an isolator diaphragm with a substantially non-compressible fluid that transfers movement of the isolator diaphragm to the sensor. The bodies each have mating passageways to transfer non-compressible fluid from one body to the other and are assembled together using a ring of extrusile material disposed around the mating portions of the passageways to seal the passageways together when the transmitter bodies are assembled. The isolation fluid is filled in the passageway of the bodies before the first and second transmitter bodies are assembled. The assembly can be accomplished without complex procedures and still insure that accurate transmitter operation will be obtained.
摘要:
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.
摘要:
An adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process is provided. The adapter includes I/O circuitry configured to couple to a two wire process control loop and to the process control transmitter and communicate on the process control loop. Wireless communication circuitry couples to the two wire process control loop and is configured to transmit an RF signal. Power supply circuitry provides power to the wireless communication circuitry.
摘要:
A process variable transmitter for measuring a pressure of a process fluid includes a process coupling having a first port configured to couple to a first process pressure and a second port configured to couple to a second process pressure. A differential pressure sensor is coupled to the first and second ports and provides an output related to a differential pressure between the first pressure and the second pressure. First and second pressure sensors couple to the respective first and second ports and provide outputs related to the first and second pressures. Transmitter circuitry is configured to provide a transmitter output based upon the output from the differential pressure sensor and/or the first and/or second pressure sensors. Additional functionality is provided by the transmitter using the sensed first and/or second pressures.
摘要:
In a particular embodiment, a process device includes a fluid disruption generation element to generate a fluid disruption within process fluid flowing through a pipe associated with an industrial process and a process variable sensor coupled to the disruption generation element to measure a process parameter. The process device further includes a power generation element adapted to generate an electrical output signal in response to the fluid disruption and a power storage component coupled to the power generation element. The power storage component is adapted to accumulate a charge based on the electrical output signal.
摘要:
Pressure and mechanical sensors include a sensing component formed of a titanium and tantalum alloy having an elastic (Young's) modulus of less than about 80 GPa and a tensile strength of greater than about 1,000 MPa. The high strength and low elastic modulus, together with very low temperature dependence of the elastic modulus and very low linear thermal expansion, result in high resolution and precise measurement over a large temperature range.