Title:
DUST GRAVIMETRIC CONCENTRATION MEASUREMENT BY PIEZO CRYSTAL OSCILLATIO N
Document Type and Number:
Japanese Patent JPS51141689
Kind Code:
A
Abstract:
PURPOSE: To minimize measurement errors even at higher concentration, by measuring gas including dust of higher concentration in a manner that the gas to be measured is mixed with pure air at a proper ratio to be weakened and thereafter is measured.
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Inventors:
TSURUBAYASHI KAZUO
Application Number:
JP6559975A
Publication Date:
December 06, 1976
Filing Date:
May 31, 1975
Export Citation:
Assignee:
KANO HAJIME
International Classes:
G01N29/02; G01N15/06; G01N29/00; (IPC1-7): G01N29/00
Foreign References:
| US3653253A | 1972-04-04 | |||
| US3787123A | 1974-01-22 |