Title:
OSCILLATORY DENSITY METER
Document Type and Number:
Japanese Patent JP2002022635
Kind Code:
A
Abstract:
To provide a density meter utilizing the fact that the frequency of a piezoelectric oscillator self-oscillating in a gas or liquid is varied depending on the density of the gas or liquid.
Density is measured by oscillating a liquid or gas to be measured and analyzing the response of an oscillator. The oscillator 1 is subjected to free oscillation by a self-excited oscillation circuit 2, the natural frequency thereof is measured by means of a counter 3, and the measurement is converted into a density being measured.
Inventors:
IWASAKI MINEO
NAKAJIMA NORIHIKO
SHINODA YORIKO
NAKAJIMA NORIHIKO
SHINODA YORIKO
Application Number:
JP2000207851A
Publication Date:
January 23, 2002
Filing Date:
July 10, 2000
Export Citation:
Assignee:
KAIJO KK
International Classes:
G01N9/00; (IPC1-7): G01N9/00