Invention Grant
- Patent Title: Analog process variable transmitter with electronic calibration
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Application No.: US14138684Application Date: 2013-12-23
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Publication No.: US10962622B2Publication Date: 2021-03-30
- Inventor: Nathan Len Wiater
- Applicant: Rosemount Inc.
- Applicant Address: US MN Chanhassen
- Assignee: Rosemount Inc.
- Current Assignee: Rosemount Inc.
- Current Assignee Address: US MN Chanhassen
- Agency: Westman, Champlin & Koehler, P.A.
- Main IPC: G01R35/00
- IPC: G01R35/00 ; G05B19/042 ; G01D18/00 ; G01R1/20

Abstract:
A process variable transmitter for measuring a process variable includes a process variable sensor configured to sense a process variable and provide a sensor output. Measurement circuitry receives the sensor output and provides a measured output related to the process variable. Output circuitry provides a device output on a two-wire process control loop based upon the measured output. The output circuitry has a transfer function that is a function of an adjustable analog circuit component. A motorized actuator is configured to adjust the adjustable analog circuit component to thereby change the transfer function of the output circuitry. An optional calibration controller is also provided.
Public/Granted literature
- US20150177356A1 ANALOG PROCESS VARIABLE TRANSMITTER WITH ELECTRONIC CALIBRATION Public/Granted day:2015-06-25
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