A scalable process transmitter architecture includes a unitized sensor module and an optional scalable transmitter. The sensor module has a sensor output that is configurable which can connect locally to a scalable transmitter module to form a transmitter, or can be wired directly to a remote receiv
A scalable process transmitter architecture includes a unitized sensor module and an optional scalable transmitter. The sensor module has a sensor output that is configurable which can connect locally to a scalable transmitter module to form a transmitter, or can be wired directly to a remote receiver. The scalable transmitter can mount on the unitized sensor module and generates a scalable output for a remote receiver. The transmitter module can provide more advanced features for specific applications.
대표청구항▼
1. A method of manufacturing a scalable transmitter module, comprising:forming a housing to mount on a unitized sensor module, the housing having an outer wall surrounding cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for c
1. A method of manufacturing a scalable transmitter module, comprising:forming a housing to mount on a unitized sensor module, the housing having an outer wall surrounding cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for connection to a wiring raceway to a remote receiver, and providing openings through he first and second openings to the cavity, and covering the cavity with a removable cover; and installing a circuit in the cavity, the circuit having a plug adapted to mate with a feedthrough of the unitized sensor module, the circuit being adapted to receive a sensor output from the unitized sensor module and generate a scalable output on circuit terminals accessible by removing the cover, the scalable output being adapted for connection to the remote receiver. 2. A method of manufacturing a unitized sensor module, comprising:providing a housing adapted to support the unitized sensor module on a process opening, providing the housing with an outer wall surrounding a cavity and providing the housing with a fitting adapted to support a scalable transmitter module, and opening the fitting to the cavity; installing a circuit in the cavity, the circuit having a sensor coupling to the process vessel and providing a sensor output; and sealing a feedthrough in the fitting and providing external conductors on the feedthrough connected to the sensor output, and adapting the conductors for both local connection to a scalable transmitter module and direct wiring to a remote receiver. 3. A unitized sensor module, comprising:means for housing adapted to support the unitized sensor module on a process opening, the means for housing having an outer wall surrounding a cavity and having a fitting adapted to support a scalable transmitter module, the fitting opening to the cavity; means for sensing having a circuit in the cavity, the circuit having a sensor coupling to the process vessel and providing a sensor output; and means for connecting having a feedthrough sealing the fitting and having external conductors connected to the sensor output, the conductors being adaptable for both local connection to a scalable transmitter module and direct wiring to a remote receiver. 4. A scalable transmitter module, comprising:means for housing adapted to mount on a unitized sensor module, the means for housing having an outer wall surrounding a cavity and having a first opening adapted to mount on a fitting of the unitized sensor module and a second opening adapted for connection to a wiring raceway to a remote receiver, and openings through the first and second openings to the cavity, and a removable cover covering the cavity; and sensing means in the cavity, including a circuit having a plug adapted to mate with a feedthrough of the unitized sensor module, the circuit being adapted to receive a sensor output from the unitized sensor module and generate a scalable output on circuit terminals accessible by removing the cover, the scalable output being adapted for connection to the remote receiver. 5. A unitized sensor module, comprising:housing means for supporting the unitized sensor module on a process opening, and for supporting a scalable transmitter module; circuit means in the cavity for coupling to a sensor and for providing a sensor output; and feedthrough means for sealing the housing means and having external conductors for energizing the circuit means and for providing the sensor output, the sensor output being configurable for local connection to a scalable transmitter module and configurable for direct wiring to a remote receiver. 6. The unitized sensor module of claim 5 further comprising an isolator means for isolating fluid at the process opening from the sensor.7. The unitized sensor module of claim 5 including a fitting means for sealing to a scalable transmitter module.8. The unitized sensor module of claim 5 wherein the feedthrough means includes a capillary tube means for flameproofing the feedthrough means.9. The unitized sensor module of claim 5 wherein the cavity is filled with a non flammable gas.10. The unitized sensor module of claim 5 wherein the local connection comprises a serial bus means for locally communicating.11. The unitized sensor module of claim 5 wherein the local connection comprises between three and five conductors.12. The unitized sensor module of claim 5 wherein the circuit means is powered from the local connection.13. The unitized sensor module of claim 5 wherein the direct wiring comprises a two wire process control loop.14. The unitized sensor module of claim 13 wherein the loop is in accordance with a 4-20 mA standard.15. The unitized sensor module of claim 13 wherein the loop is in accordance with a digital communication standard.16. The unitized sensor module of claim 5 wherein the module is intrinsically safe.17. A transmitter comprising a scalable transmitter module coupled to the unitized sensor module of claim 5.18. The transmitter of claim 17 including a feature board means for processing the sensor output.19. The transmitter of claim 17 including a second unitized sensor module for coupling to the scalable transmitter module.20. The transmitter of claim 17 wherein the scalable transmitter module is spaced apart from the unitized sensor module and the units are electrically coupled together.21. The transmitter of claim 17 wherein the transmitter module is physically coupled to the feedthrough means of the unitized sensor module.22. The transmitter of claim 18 wherein the feature board means includes a display means for displaying information.23. The transmitter of claim 18 wherein the feature board means is further for providing an output related to the sensor output on a two wire process control loop.24. The transmitter of claim 23 wherein the two wire process control loop is in accordance with a 4-20 mA standard.25. The transmitter of claim 23 wherein the two wire process control loop is in accordance with a digital standard.26. The transmitter of claim 23 wherein the scalable transmitter module and the unitized sensor module are completely powered from the two wire process control loop.27. The transmitter of claim 17 wherein the unitized sensor module is completely powered with power received from the modular transmitter module through feedthrough.28. The transmitter of claim 17 wherein the transmitter is intrinsically safe.29. A scalable transmitter module, comprising:a housing means for mounting on a unitized sensor module, the housing means having a cavity and having a first opening mounting on a fitting of the unitized sensor module and a second opening adapted to connecting wiring to a remote receiver; and a circuit means in the cavity, the circuit means for receiving a sensor output from the unitized sensor module and generating a scalable output for sending to the remote receiver. 30. The scalable transmitter module of claim 29 wherein the circuit means includes a terminal block means for connecting the sensor output to the remote receiver.31. The scalable transmitter module of claim 29 wherein the circuit means is further for transmitting the sensor output on a two wire process control loop for transmission to the remote receiver.32. The scalable transmitter module of claim 29 including a display means for displaying information.33. The scalable transmitter module of claim 29 wherein the circuit means is further for processing a sensor output from the unitized sensor module.34. The scalable transmitter module of claim 29 wherein the circuit means is further for coupling to a second unitized sensor module.35. The scalable transmitter module of claim 29 wherein the transmitter module is configured to be spaced apart from the unitized sensor module and the units are electrically coupled together.36. The scalable transmitter module of claim 29 wherein the circuit means is further for completely powering the unitized sensor module with power.37. The apparatus of claim 29 including a unitized sensor module coupled to the housing means.38. The apparatus of claim 37 wherein the unitized sensor module, comprises:housing means for supporting the unitized sensor module on a process opening; and circuit means in the housing means for providing sensor output. 39. A process control transmitter, comprising:a unitized sensor module, including: a housing adapted to support the unitized sensor module on a process opening; a circuit in the housing, the circuit having a sensor coupling to the process opening and providing a sensor output; a feedthrough sealing the housing an having external conductors energizing the circuit and providing the sensor output, the sensor output being configurable for local connection to a scalable transmitter module and configurable for direct wiring to a remote receiver; and a scalable transmitter module coupled to the unitized sensor module. 40. The transmitter of claim 39 wherein the transmitter module includes a feature board configured to process the sensor output from the circuit of the unitized sensor module.41. The transmitter of claim 39 wherein including a second unitized sensor module coupled to the scalable transmitter module.42. The transmitter of claim 39 wherein the scalable transmitter module is spaced apart from the unitized sensor module and the units are electrically coupled together.43. The transmitter of claim 39 wherein the transmitter module is physically coupled to the unitized sensor module.44. The transmitter of claim 40 wherein the feature board includes a display.45. The transmitter of claim 40 wherein the feature board is configured to provide an output related to the sensor output on a two wire process control loop.46. The transmitter of claim 45 wherein the two wire process control loop is in accordance with a 4-20 mA standard.47. The transmitter of claim 45 wherein the two wire process control loop is in accordance with a digital standard.48. The transmitter of claim 45 wherein the scalable transmitter module and the unitized sensor module are completely powered from the two wire process control loop.49. The transmitter of claim 40 wherein the unitized sensor module is completely powered with power received from the scalable transmitter module through feedthrough.50. The transmitter of claim 40 wherein the transmitter is intrinsically safe.51. A process control transmitter, comprising:a scalable transmitter module, including: a housing adapted for connection to a wiring raceway to a remote receiver; a circuit in the housing having a plug, the circuit being adapted to receive a sensor output and generate a scalable output on circuit terminals, the scalable output being adapted for connection to the remote receiver; and a unitized sensor module coupled to the scalable transmitter module through the plug and providing the sensor output to the circuit. 52. The transmitter of claim 51 wherein the unitized sensor module, comprises:a housing adapted to support the unitized sensor module on a process opening, and adapted to support the scalable transmitter module; a circuit in the housing, the circuit having a sensor coupling to a process opening and providing the sensor output; and a feedthrough having external conductors energizing the circuit and providing the sensor output, the sensor output being configurable for local connection to the scalable transmitter module and configurable for direct wiring to a remote receiver. 53. The transmitter of claim 52 further comprising an isolator configured to isolate fluid at process fluid from the sensor.54. The transmitter of claim 53 wherein the isolator includes a passageway to couple between the sensor and a process opening, the passageway having a shape which provides flameproofing.55. The transmitter of claim 52 wherein the feedthrough includes a capillary tube sealed to flame-proof the feedthrough.56. The transmitter of claim 51 wherein the unitized sensor module is filled with a non flammable gas.57. The transmitter of claim 51 wherein a fitting extends around the external conductors and is adapted to retain a plug mating with the external conductors.58. The transmitter module of claim 51 including a serial bus configured to receive the sensor output.59. The transmitter module of claim 51 wherein the plug comprises between three and five conductors.60. The transmitter module of claim 51 wherein the circuit is configured to power the unitized sensor module.
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