Wireless interface within transmitter
First Claim
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1. A process transmitter configured to measure a process variable of an industrial process, comprising:
- a process variable sensor configured to sense the process variable and responsively provide a process variable sensor output;
sensor circuitry coupled to the process variable sensor;
output circuitry configured to communicate with the sensor circuitry;
a housing configured to enclose the sensor circuitry and the output circuitry;
a sensor circuit common connection which couples the sensor circuitry to the housing thereby reducing noise in the sensed process variable; and
a wireless communication link between the sensor circuitry and the output circuitry, wherein the wireless communication link wirelessly carries a data signal related to the process variable sensor output from the sensor circuitry to the output circuitry.
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Abstract
A process transmitter is configured to measure a process variable of an industrial process. The process transmitter includes a process variable sensor which senses the process variable and responsively provides a process variable sensor output. Sensor circuitry is coupled to the process variable sensor. A housing to encloses the sensor circuitry and the output circuitry. The sensor circuitry electrical couples to the housing. The sensor circuitry wirelessly communicates with the output circuitry.
77 Citations
21 Claims
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1. A process transmitter configured to measure a process variable of an industrial process, comprising:
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a process variable sensor configured to sense the process variable and responsively provide a process variable sensor output; sensor circuitry coupled to the process variable sensor; output circuitry configured to communicate with the sensor circuitry; a housing configured to enclose the sensor circuitry and the output circuitry; a sensor circuit common connection which couples the sensor circuitry to the housing thereby reducing noise in the sensed process variable; and a wireless communication link between the sensor circuitry and the output circuitry, wherein the wireless communication link wirelessly carries a data signal related to the process variable sensor output from the sensor circuitry to the output circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of providing an output from a transmitter, comprising:
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coupling sensor circuitry to a process variable sensor configured to sense a process variable and responsively provide a process variable sensor output; providing transmitter output circuitry configured to communication with the sensor circuitry; enclosing the sensor circuitry and the transmitter output circuitry in a housing; coupling the sensor circuitry to the housing a sensor circuit common connection configured to reduce noise in the sensed process variable; and wirelessly transmitting a signal related to the process variable sensor output from the sensor circuitry to the transmitter output circuitry. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A process transmitter configured to measure a process variable of an industrial process, comprising:
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a process variable sensor configured to sense the process variable and responsively provide a process variable sensor output; sensor circuitry coupled to the process variable sensor; output circuitry configured to communicate wirelessly with the sensor circuitry, wherein the sensor circuitry is configured to communicate with the output circuitry; a housing configured to enclose the sensor circuitry and the output circuitry; a sensor circuit common connection which couples the sensor circuitry to the housing thereby reducing noise in the sensed process variable; and a wireless communication link between the sensor circuitry and the output circuitry, wherein the wireless communication link wirelessly carries a data signal related to the process variable sensor output from the sensor circuitry to the output circuitry.
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Specification