Abstract
The present disclosure describes a device and corresponding method for measuring tar in a tar environment, e.g., a tar producing environment such as a stove or a combustion engine, based on UV absorption spectroscopy. A first measurement along an optical path in the tar environment is performed at a wavelength less than 340 nm at which both tar and non-tar elements absorb. This measurement is compensated for non-tar absorption by means of a second measurement at a wavelength equal to or greater than 340 nm at which tar does not absorb. From the non-tar compensated absorbance value a measure of tar in the tar environment is derived and an air intake in the tar environment is regulated based on the measure of tar.
| Original language | English |
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| IPC | G01N 21/ 84 A N |
| Patent number | WO2017144507 |
| Filing date | 31/08/2017 |
| Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
| Priority date | 22/02/2016 |
| Priority number | EP20160156675 |
| Publication status | Published - 31 Aug 2017 |