RESISTANCE MEASUREMENT INSTRUMENT

Japanese Patent JP3902063

B2

PROBLEM TO BE SOLVED: To safely measure the resistance on a real time basis when a melting furnace is in operation.
SOLUTION: This resistance measurement instrument to measure the resistance of one insulating sleeve out of first and second insulating sleeves of a plasma type melting furnace including first and second electrodes, first and second shells located around the first and second electrodes, respectively, an insulation flange to insulate between the first and second shells, and first and second insulation sleeves comprises an inductance, a capacitor, and a high frequency power source connected in series to the electrode and the shell corresponding to one insulation sleeve via the inductance and the capacitor, and further comprises a resistance measurement instrument to find the resistance of the insulation sleeve from the voltage applied between the electrode and the shell by the high frequency power source, the current flowing between the electrode and the shell, and the phase difference between the current and the voltage. The high frequency power source may be connected via a resistor.

Tomohiro Harada
Ichiro Yamashita
Kazuya Tsurusaki
Yoshimasa Kawami
Keita Inoue

JP2002128306A

April 04, 2007

April 30, 2002

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MITSUBISHI HEAVY INDUSTRIES,LTD.

F27D21/00; G01R27/02; F23J1/00; H05B7/18; (IPC1-7): F27D21/00; F23J1/00; G01R27/02; H05B7/18

JP63064288A
JP48019142B1
JP6331278A
JP4165289A
JP11201662A
JP45028524B1
JP48081077A
JP11142451A
JP64073260A

Shigemitsu Tanaka
Shin Ishikawa

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