Abstract:
A transmitter (10) of the type used in the process control industry includes a sensor for sensing a process variable and a transmitter body (12) having a sensor coupling (30). A sensor extension (14) couples to the sensor coupling (30) and includes a sensor coupling face (60). A first flange interface (16A) has a process face (76A) which provides a process connection and a sensor face which provides a sensor connection. A passageway couples the process connection to the sensor connection. The first flange interface (16A) is coupled to the sensor extension (14) by a coupling mechanism. The sensor extension (14) and the first flange interface (16A) may be moved throughout a range of positions relative to one another.
Abstract:
In this invention, a multivariable transmitter (2) providing an output representative of mass flow has a dual microprocessor structure. The first microprocessor (72) compensates digitized process variables and the second microprocessor (80) computes the mass flow as well as arbitrating communications between the transmitter (2) and a master (88).
Abstract:
A transmitter (8) with a flame arresting header (16) senses a pressure of a process fluid with a diaphragm (44) which is sealed to the header. The diaphragm (44) transfers the pressure of the process fluid acting on an outer surface of the diaphragm (44) to a fill fluid (50). A pressure sensor (18) enclosed in the transmitter (8) senses the pressure of the fill fluid (50) providing an output representative of the pressure of the process fluid. The header (16) includes a chamber (48) on an outer face of the header (16) and a passageway (54) extending from the chamber (48) to a tapered opening (56) inside the transmitter (18) with a first portion (58) adjacent to the tapered opening (56) shaped to receive an inlet tube (52) sealed with a tapered seal and leading to the sensor (18) and a second flame isolating portion (70) open to the chamber (48). The second passageway portion (70) is shaped for flame isolating the tapered seal (60) from the process fluid.
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:
A sensor capsule (20, 98, 120, 220) suitable for use in an industrial process fluid transmitter. The sensor capsule (20, 98, 120, 220) includes a block (24, 224) that has a sensor mounting hole (30, 130, 230). The block (24, 224) includes two half-blocks (26, 28; 146, 148; 226, 228) joined along mating surfaces (22, 23; 222, 223) passing lengthwise through the sensor mounting hole. A (50, 128, 250) sensor has as sensor neck (52, 252) passing through the sensor mounting hole (30, 130, 230). The sensor neck (52, 252) is sealed to the sensor mounting hole (30, 130, 230).
Abstract:
A pressure monitoring system (200) provides a pressure sensor (214) and a body that has a first coefficient of thermal expansion and includes at least one opening (226) for accessing a process fluid. At least one isolation diaphragm (230) is coupled to the body and positioned in the at least one opening (226). The at least one isolation diaphragm (230) has a first surface in communication with the process fluid. At least one passageway (222) is located in the body and configured to contain a fill fluid in communication with a second surface of the first isolation diaphragm. The at least one passageway (222) is positioned between the first isolation diaphragm (230) and the pressure sensor (214). At least one expansion chamber (242) is coupled to the first passageway and includes an insert (246) having a second coefficient of thermal expansion. The first coefficient of thermal expansion of the body is greater than the second coefficient of thermal expansion of the insert (246).
Abstract:
A pressure transmitter assembly (400) for measuring a pressure of a process fluid includes an isolation diaphragm assembly (402) configured to couple to a process fluid. A pressure sensor (408) is coupled to the isolation diaphragm assembly (402) and is configured to sense a pressure. An isolation diaphragm coupling flange (420) is provided to carry the isolation diaphragm assembly (402) and includes a cutaway portion (430, 432, 434) to provide thermal isolation.
Abstract:
A pressure sensor (10) including a deformable sensor body (27) formed of a compressible material. A deformation sensor (96) is embedded in the deformable sensor body and has an electrical property which changes in response to deformation of the deformable sensor body. An electrical connection (98) extend from outside the deformable sensor body to the embedded deformation sensor (96) to provide an indication of an applied line pressure or differential pressure.
Abstract:
A manifold (10) includes a body having generally planar inlet surface (14). The inlet surface (14) includes a first inlet (16) and a second inlet (18) adapted for coupling to a pressurized process fluid. An outlet surface (22) on the manifold (10) is adapted for coupling to a co-planar transmitter and is at angle relative to the inlet surface (14). The manifold (10) includes an equalizing valve surface (24) opposite the outlet surface (22), and a perimeter therebetween. The outlet surface (22) includes first and second outlets (26, 28) in fluid communication with the first and second inlets (16, 18), respectively.