Method of and apparatus for compensating for load/environment temperature differential-induced measured load weight error
US5801337A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of compensating for load/environment temperature differential-induced measured load weight error comprises the steps of: providing a load having a load temperature T.sub.L ; providing an environment having an environment temperature T.sub.E, different from the load temperature; subjecting the load to the environment at time t.sub.0 ; measuring the weight w.sub.0 of the load at time t.sub.0 ; measuring the weight w.sub.1 of the load at time t.sub.1 ; and calculating the change in weight .DELTA.w.sub.td of the load, between the time t.sub.0 at which the load is subjected to the environment and the time t.sub.2 at which the load and environment temperatures reach equilibrium, induced by the temperature differential between the load and the environment, from the measured load weights w.sub.0 and w.sub.1. The method further comprises the steps of: measuring the weight w.sub.n of the load at time t.sub.n .gtoreq.t.sub.2 ; and subtracting the temperature differential-induced load weight change .DELTA.w.sub.td from the load weight w.sub.n. Also provided is apparatus for determining the binder content of a sample of building material by weighing the sample before combustion, combus…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.