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Title:
METHOD FOR MEASURING MOISTURE OF RAW MATERIAL OF IRON MANUFACTURING
Document Type and Number:
Japanese Patent JPS58118950
Kind Code:
A
Abstract:

PURPOSE: To make possible measurement of the moisture content and temperature in the object to be measured without contact in a state of open-air storage, by utilizing the fact that an equivalent dielectric constant is varied by the moisture content and emissivity of a raw material powdered and granular body is varied accompanied by the variation of the equivalent dielectric constant and measuring thermal radiation at ≥0.4μm wavelength.

CONSTITUTION: A circular horn antenna 2 receiving thermal radiation from an object to be measured 1 is arranged at an observation angle θ1 for the object 1 and heat radiation electric power received by the antenna 2 is amplified and detected by a ferrite rotor 3, a receiver 4 and a synchronous detector 5. And, switching of a vertical polarized wave and horizontal polarized wave is carried out by the rotor 3 and the detector 5 in a constant frequency by a synchronous oscillator 6 and the difference of both waves is detected and then, the moisture content is measured by its detected value.


Inventors:
HATONO TETSUO
KOBAYASHI SUMIO
Application Number:
JP201382A
Publication Date:
July 15, 1983
Filing Date:
January 08, 1982
Export Citation:
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Assignee:
SUMITOMO METAL IND
International Classes:
C22B1/00; C22B1/20; G01J5/00; G01J5/54; G01N22/04; (IPC1-7): C22B1/00; G01N22/00
Domestic Patent References:
JPS56145970A1981-11-13
Attorney, Agent or Firm:
Yoshihisa Oshida



 
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