Weight responsive moisture tester
US4972155A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A test apparatus for determining a given property, by weight, such as moisture content, of a material such as a grain or the like, comprises a chamber for receiving a sample of material to be tested, having an open top portion through which the material may be introduced therein for testing. An electrical circuit is operatively coupled with the chamber for producing an electrical measurement signal corresponding to the property to be determined and an indicator provides an observable indication of the given property of material in accordance with the corresponding electrical measurement signals. A measurement initiating control in responsive to the accumulation of a predetermined measurement weight of material in the chamber for initiating the operation of the circuit. A further warning control is responsive to the weight of material in the chamber reaching a second, predetermined warning weight slightly less than the predetermined measurement weight for producing a warning signal. The indicator is responsive to the warning signal for producing a warning indication for alerting the operator to introduce material into the chamber more slowly to thereby reduce the inertia of material…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.