Peak point detector for ionized mass flow rate measurement
US4173888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1978 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Jan 13, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In mass flow rate measuring apparatus wherein the fluid is ionized at intervals at a predetermined point of the fluid passage, a voltage is sensed when the ionized flow mass is collected by an electrode located downstream from the ionization point. Electromagnetic radiation, generated in response to the generation of a strong electric field that ionizes the fluid, is prevented by means of a gate circuit from being sensed as a signal for triggering a time measuring device. The signal from the gate circuit is coupled to a voltage sensing circuit that detects a point near or at the peak value of successive voltage waveforms to signal the time measuring device as a point of ion collection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.