Process variable transmitter
US9851698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/0365
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process variable transmitter provides an output representing a process variable. The process variable transmitter includes a process variable sensor that provides an analog sensor signal representing a process variable, an analog to digital converter that receives the analog sensor signal from the process variable sensor and converts it to digital sensor signal values, and a compensation processor. The compensation processor calculates, in a first mode, a compensated process variable value at a first slow rate. The compensation processor calculates a compensation factor relating the compensated process variable value to an initial digital sensor signal value. The compensation processor calculates, in a second mode, a process variable estimate as a function of an updated digital sensor signal value and the compensation factor. The process variable estimate is calculated at a second rate faster than the slow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.