Thermal flowmeter with temperature compensation
US4475388A · kind A · utility
9Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 7, 1982 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Oct 7, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/696
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the flow rate of fluid such as liquified petroleum gas fuel for an automobile fuel. A signal of the fluid flow rate and a signal of the fluid temperature are produced by using the signals from an electric heater and a first, second, and third temperature-dependent resistors in a signal processing circuit. The produced signals are supplied to a computer circuit to carry out modification, linearization, and multiplication by a conversion constant for linearization which is corrected regarding temperature characteristic. The result of calculation in the computer circuit is displayed on a display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.