Methods and apparatus to couple an electro-pneumatic controller to a position transmitter in a process control system
OwnerStephen George Seberger, Steven William Hagen +1inventors
InventorsStephen George Seberger, Steven William Hagen, Lorin Dion Miller
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Abstract
Example methods and apparatus to couple an electro-pneumatic controller to a position transmitter in a process control system are disclosed. A disclosed example apparatus includes a position transmitter having a first connection and having a second connection coupled to a power source, an electro-pneumatic controller including at least a first connection coupled to the first connection of the position transmitter, and a resistor coupled between the first connection and a second connection of the electro-pneumatic controller.
Claims25
A process control apparatus comprising:
- a position transmitter having a first connection and having a second connection coupled to a power source;
- an electro-pneumatic controller including at least a first connection coupled to the first connection of the position transmitter;
- and
- a resistor coupled between the first connection and a second connection of the electro-pneumatic controller.
A process control apparatus:
- a position transmitter having first and second connections;
- an electrical isolator having first, second, and third connections, wherein the third connection of the electrical isolator is coupled to the second connection of the position transmitter;
- and
- an electro-pneumatic controller including at least a first connection coupled to the first connection of the position transmitter and the first connection of the electrical isolator, wherein the electro-pneumatic controller includes a second connection coupled to the second connection of the electrical isolator.
A method to couple an electro-pneumatic controller to a position transmitter in a process control system, the method comprising:
- coupling a first connection of an electro-pneumatic controller to a first connection of a position transmitter;
- coupling the electro-pneumatic controller to a resistor by coupling the resistor between the first connection and a second connection of the electro-pneumatic controller;
- and
- coupling a second connection of the position transmitter to a power source.
Dependencies are inferred from the claim text.