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US 9,429,462 B2Granted
Two-wire process variable indicator with microencapsulated electrophoretic display
AssigneeRosemount Inc.
InventorMark S. Schumacher
Life of this patent
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Abstract
A two-wire process variable indicator includes a housing having a plurality of terminals disposed therein. The terminals are coupleable to a two-wire process control loop. A power module is coupled to the plurality of terminals to receive current flow from the process control loop. Driver circuitry is coupled to the power module and a microencapsulated electrophoretic display is coupled to the driver circuitry.
Claims16
A two-wire process variable indicator comprising:
- a housing;
- a plurality of terminals disposed within the housing and being coupleable to a two-wire process control loop which carries at least one of an analog and a digital signal representative of information related to a process variable wherein the terminals are configured to receive the information from the two-wire process control loop related to the process variable;
- a power module coupled to the plurality of terminals to receive current flow from the process control loop;
- driver circuitry coupled to the power module;
- and
- a microencapsulated electrophoretic display coupled to the driver circuitry and configured to display information related to the process variable received from two-wire process control loop;
- wherein the driver circuitry and the microencapsulated electrophoretic display are wholly powered with power from the two-wire process control loop.
4 more elements
A process variable indicator comprising:
- a housing;
- a plurality of terminals disposed within the housing and being coupleable to a process control loop which carries at least one of an analog and a digital signal representative of information related to a process variable wherein the terminals are configured to receive the information from the process control loop related to the process variable;
- a power module coupled to the plurality of terminals and configured to power the process variable indicator from the process control loop;
- driver circuitry coupled to the power module;
- and
- a microencapsulated electrophoretic display coupled to the driver circuitry to display an indication of the process variable received from the process control loop;
- wherein the driver circuitry and the microencapsulated electrophoretic display are wholly powered with power from the process control loop.
4 more elements
Dependencies are inferred from the claim text.