Automatic test parameters compensation of a real time fluid analysis sensing device
US5821399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for automatic fluid flow compensation in disposable fluid analysis sensing devices is disclosed. The method is designed to keep the test conditions from sample to sample substantially unchanged. This is accomplished by using information about the preceding and/or current test measurements to automatically offset parameter variations of the disposable devices and the reading apparatus caused by manufacturing tolerances, wear of the mechanical parts, fluid viscosity differences and others. At each consecutive test measurement the method uses a compensation of the position of the actuating element to offset the difference between the previous test measurement and a factory pre-specified value. The method and system result, over the lifetime of the instrument, in a substantially unchanged flow of the analyzed fluid and reduction of the influence of a variety of external factors on the test measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.