NON-CONTACT INDUCTIVE DISTANCE MEASUREMENT SYSTEM, IN PARTICULAR FOR DETECTING THE LEVEL OF A LIQUID METAL BATH

摘要

P A.LESS CONTACT INDUCTIVE DISTANCE MEASUREMENT SYSTEM, IN PARTICULAR FOR DETECTING THE LEVEL OF A LIQUID METAL BATH; / P B B.CARIO-SPECIFIC DEVICE INCLUDING AN OSCILLATOR 44, ONE AMPLIFIER 48, AN LC CIRCUIT COMPRISING A DETECTION COIL 16 AND A CAPACITOR 46 CONNECTING THE OUTPUT OF THE OSCILLATOR AT THE INPUT OF THE AMPLIFIER, SO THAT THE AMPLITUDE OF THE SIGNAL, APPEARING AT THE OUTPUT OF THE AMPLIFIER, VARIED ACCORDING TO THE DISTANCE BETWEEN THE DETECTION COIL AND A METALLIC OBJECT LOCATED IN THE NEIGHBORHOOD, AND MEANS FOR INDICATING THE AMPLITUDE OF THIS OUTPUT SIGNAL, THAT IS TO SAW THE DISTANCE BETWEEN THE DETECTION COIL AND THE METAL OBJECT LOCATED IN THE VICINITY OF THE SAME; / P P C. THE INVENTION CONCERNS A NON-CONTACT INDUCTIVE DISTANCE MEASUREMENT SYSTEM, IN PARTICULAR FOR THE DETECTION OF THE LEVEL OF A BATH LIQUID METAL. / P