Abstract:
A multivariable process fluid pressure transmitter (10) includes an electronics module (18) and a sensor module (222). The sensor module (222) is coupled to the electronics module (18). A process fluid temperature sensor is coupled to the process fluid pressure transmitter. A differential pressure sensor (228) is disposed within the sensor module (22) and is operably coupled to a plurality of process fluid pressure inlets. A static pressure sensor (230) is also disposed within the sensor module (222) and is operably coupled to at least one of the process fluid pressure inlets. A first temperature sensor (232) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the differential pressure sensor (228). A second temperature sensor (234) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the static pressure sensor (230). Measurement circuitry (328) is operably coupled to the differential pressure sensor (228), the static pressure sensor (230), and the first (232) and second (234) temperature sensors. A processor (326) is coupled to the measurement circuitry (328) and is configured to provide a compensated differential pressure output based on a measurement of the differential pressure sensor (238) and the first temperature sensor (232), and to provide a compensated static pressure output based on a measurement of the static pressure sensor (230) and the second temperature sensor (234).
Abstract:
A pressure module (200) includes a sensor assembly (202) with tubes (210, 212) extending from a pressure sensor (204) to fluid isolator members (206, 208). The pressure sensor is contained in a cavity (216) in a module housing (214). The module housing includes support members (218, 220) joined by joints to the fluid isolator members to provide barriers to leakage of process fluids into the cavity. Threaded process inlets (230, 232) on a bottom outside surface of the module housing couple the process fluids to the fluid isolator members through process passageways (236, 238) in the module housing.
Abstract:
A field device (36) is coupled to a process through at least one process interface element (50, 102, 172, 200). The process interface element (50, 102, 172, 200) may be a field device flange, a manifold, or a process flange. The process interface element (50, 102, 172, 200) has a temperature sensor (106) attached thereto, and is adapted to receive a thermal source (104, 124, 156, 178, 206). In one embodiment, the thermal source (104, 124, 156, 178, 206) is one or more electrical heaters (104, 156, 206). In another embodiment, the thermal source is thermal transfer fluid tracing (126, 174) through the process interface element (50, 102, 172, 200). A controller (108) is coupled to the temperature sensor (106) and is adapted to control the heat applied to the process interface element (50, 102, 172, 200) based upon the temperature of the process interface element (50, 102, 172, 200) measured by the temperature sensor (106).
Abstract:
A process device (34, 360, 500, 600) includes a controller (36, 362) and a wireless communications module (32, 366, 506). The wireless communications module (36, 366, 506) is coupled to the controller (36, 362). A power generation module (38, 365, 508, 602, 604, 620) is provided to generate electricity for the process device (32, 366, 506). The power generator module (38, 365, 508, 602, 604, 620) can be disposed within the process device (32, 366, 506) or it can be a separate unit coupled to the process device (32, 366, 506).
Abstract:
A microwave level gauge 17 for measuring a level of a process material in a tank includes a ceramic seal 316 and a microwave conductor 218. The ceramic seal 316 is disposed adjacent to an opening in the tank and adapted to isolate circuitry 203 from the process material. The microwave conductor is electrically coupled to the circuitry and extends through the hermetic seal 316 and into the process material in the tank. The ceramic seal 316 and an isolating adapter 328 cooperate to isolate the microwave conductor from the process fluid and from external forces.
Abstract:
A multivariable process fluid pressure transmitter (10) includes an electronics module (18) and a sensor module (222). The sensor module (222) is coupled to the electronics module (18). A process fluid temperature sensor is coupled to the process fluid pressure transmitter. A differential pressure sensor (228) is disposed within the sensor module (22) and is operably coupled to a plurality of process fluid pressure inlets. A static pressure sensor (230) is also disposed within the sensor module (222) and is operably coupled to at least one of the process fluid pressure inlets. A first temperature sensor (232) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the differential pressure sensor (228). A second temperature sensor (234) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the static pressure sensor (230). Measurement circuitry (328) is operably coupled to the differential pressure sensor (228), the static pressure sensor (230), and the first (232) and second (234) temperature sensors. A processor (326) is coupled to the measurement circuitry (328) and is configured to provide a compensated differential pressure output based on a measurement of the differential pressure sensor (238) and the first temperature sensor (232), and to provide a compensated static pressure output based on a measurement of the static pressure sensor (230) and the second temperature sensor (234).
Abstract:
An in-line pressure transmitter (10) for sensing an absolute or gage process pressure of a process fluid includes an in-line process coupling (14). The coupling has a mounting member (16) which includes a substantially flat mounting face (18) and a bore generally aligned with an isolation diaphragm assembly (30). The member (16) is configured to mount to a flat process coupling.
Abstract:
An environmentally sealed instrument circuit adapter (130) connecting a process transmitter (100) to instrument wiring (142). An environmentally sealing elastomeric part seals (150) between a lip (146) on an outer sleeve (144) and a connector header (130) of the process transmitter (100). One or more washers (160) can provide sealing between the lip (146) and the elastomeric part (150) when tightened. The adapter (130) protects contact pins, sockets and wires from damage due to liquids, humidity, dust and other contaminants.
Abstract:
A scalable process transmitter architecture includes a unitized sensor module (130) and an optional scalable transmitter (132). The sensor module (130) has a sensor output that is configurable which can connect locally to a scalable transmitter module (132) to form a transmitter, or can be wired directly to a remote receiver (18). The scalable transmitter (132) can mount on the unitized sensor module (130) and generates a scalable output for a remote receiver (18). The transmitter module (132) can provide more advanced features for specific applications.
Abstract:
A microwave level gauge for measuring a level of a process material in a tank includes a ceramic seal and a microwave conductor. The ceramic seal is disposed adjacent to an opening in the tank and adapted to isolate circuitry from the process material. The microwave conductor is electrically coupled to the circuitry and extends through the hermetic seal and into the process material in the tank. The ceramic seal and an isolating adapter cooperate to isolate the microwave conductor from the process fluid and from external forces.