Process transmitter with wireless communication link
First Claim
Patent Images
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;
first transmitter electronic circuitry coupled to the process variable sensor;
second transmitter electronic circuitry configured to cooperate with the first transmitter electronic circuitry;
a two-wire process control loop coupling configured to provide power to the circuitry from a two-wire process control loop;
a housing having a first cavity housing the first transmitter electronic circuitry, the housing including a barrier between the first transmitter electronic circuitry and the second transmitter electronic circuitry; and
a non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween.
1 Assignment
0 Petitions
Accused Products
Abstract
A process transmitter is configured to measure a process variable of an industrial process. A housing has a first cavity which houses first transmitter electronic circuitry and provides a barrier between the first transmitter electronic circuitry and second transmitter electronic circuitry. A non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween.
-
Citations
31 Claims
-
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;
first transmitter electronic circuitry coupled to the process variable sensor;
second transmitter electronic circuitry configured to cooperate with the first transmitter electronic circuitry;
a two-wire process control loop coupling configured to provide power to the circuitry from a two-wire process control loop;
a housing having a first cavity housing the first transmitter electronic circuitry, the housing including a barrier between the first transmitter electronic circuitry and the second transmitter electronic circuitry; and
a non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A process monitoring system comprising:
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;
first transmitter electronic circuitry coupled to the process variable sensor;
a two-wire process control loop coupling configured to provide power to the circuitry from a two-wire process control loop;
a housing having a first cavity housing the first transmitter electronic circuitry, the housing including a barrier between the first transmitter electronic circuitry;
second transmitter electronic circuitry spaced apart from the process transmitter configured to cooperate with the first transmitter electronic circuitry; and
a non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween. - View Dependent Claims (19, 20)
-
21. A method of providing an output from a transmitter, comprising:
-
coupling first transmitter electronic circuitry to a process variable sensor configured to sense a process variable;
enclosing the first transmitter electronic circuitry in a hermetically sealed cavity;
placing second transmitter electronic circuitry outside the cavity, the second transmitter electronic circuitry separated from the first electronic circuitry by a barrier;
providing loop connections to couple the transmitter to a two-wire process control loop, the transmitter configured to be completely powered from the process control loop; and
coupling the first transmitter electronic circuitry to the second transmitter electronic circuitry by a non-physical electromagnetic link. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification