Multi-range load cell weighing instrument
US4690230A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1986 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Apr 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G23/3707
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Means for supporting an article to be weighed, a low range load cell having a high accuracy weighing range and including means for outputting a first signal in response to a weight on the supporting means and a high range load cell having a high load weighing range which is higher than the high accuracy weighing range, the high range load cell including means for outputting a second signal in response to a weight on the supporting means, are provided. Means are also provided for receiving the first and second signals and for outputting a weight signal as a function of one of the first and second signals, the means for receiving including means for outputting the weight signal as a function of the first signal for any weight within the weighing range of the low range load cell, whereby high accuracy weighing is achieved. The instrument includes means for counting a number of weighings and for outputting a counting signal as a function of the first and second signals received as a result of repeated weighings, whereby the instrument can be used as a counting instrument. The weight can be displayed in either pound or kilogram units, with a preferences given for kilogram units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.