Bulk material analyzer calibration block
US4694165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/617
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration block is used for calibrating a bulk material analyzer that has an activation region in which bulk material is received for analysis and a chute for passing the bulk material through the activation region. The block is dimensioned to be of almost the same cross-sectional size as the interior of the chute and extends both above and below the activation region when inserted in the chute. The calibration block is manufactured by (a) providing a mixture of known materials of known proportions that do not chemically react with each other, including a bonding agent; (b) homogenizing the mixture to make a thick paste in which the known materials are bound without segregation of known materials that have different densities; (c) molding the homogeneous mixture into the shape of a block having predetermined dimensions; and (d) solidifying the molded mixture to provide the calibration block. Alternative processes for manufacturing the calibration block utilize compaction and sintering techniques instead of a bonding agent. The measurement system of the bulk material analyzer is calibrated in accordance with measurements made while the calibration block is in the chute. One embo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.