Multifunctional fluid meter and method for measuring coolant, bio-diesel, gas-ethanol and DEF
US9448112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Jun 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A simple and compact apparatus, and a method, for determining the characteristics of a number of fluids used in the truck and automotive industries including coolant, bio-diesel, gas-ethanol and diesel engine fluid (DEF). The apparatus includes a sample container providing optical paths of different lengths for making measurements on a sample. The dual path length design allows the apparatus to capture both NIR and UV spectral ranges. The qualitative and quantitative properties of the fluid under test are compared to test results under normal conditions or to the properties of unused fluid. Two light sources are used within a spectrometer with each source being associated with a different optical path length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.