Patent · US Active

Wider dynamic accuracy range for gas delivery devices

US9976887B1 · kind B1 · utility

1Cited by

7References

17Claims

0Family size

Inventors

Daniel T. Mudd · Reno, US
Patti J. Mudd · Reno, US

Key dates

Filing date	Jul 30, 2014
Grant date	May 22, 2018
Priority date	—
Expiry date	Dec 20, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01F25/15
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A mass flow meter utilizes both positive and negative slopes of operating curves for first and second thermal sensors for a wider dynamic range. First and second interfaces receive first and second signal readings from first and second thermal sensors. A selection module identifies a zone from the first and second output signals and determines an assigned thermal sensor for the zone from the zone table, regardless of whether the thermal sensor output signals from a positive or negative slope of an operating curve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.