Coriolis flowmeter
US8442781B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Mar 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/8436
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A drive device for operating an electromagnetic oscillator includes an OP amplifier for amplifying an analog input signal from an electromagnetic pick-off and an A/D converter for converting an analog signal output from the OP amplifier into a digital signal. The drive device also includes a D/A converter for converting, after digital processing performed by a DSP on the digital signal output from the A/D converter based on phase detection, a digital signal having a processed data amount into an analog signal, and a D/A converter for converting, after the digital processing performed by the DSP on the digital signal output from the D/A converter based on the phase detection, a digital signal having a processed data amount into an analog signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.