| 摘要 |
A LIQUID QUANTITY DETECTOR COMPRISES AN INTERNAL TUBE, A COIL WOUND ON THE INTERNAL TUBE, AN EXTERNAL SHEATH TUBE, A FLOAT BALL, A BOTTOM BASE, AND AN UPPER STATIONARY SEAT. THE FLOAT BALL IS PLACED IN THE COIL WOUND INTERNAL TUBE, AND THE EXTERNAL SHEATH TUBE SHEATH THE INTERNAL TUBE. THE TOP END OF THE INTERNAL TUBE IS SCREW-JOINTED WITH THE UPPER STATIONARY SEAT WHILE THE BOTTOM END OF THE INTERNAL TUBE IS COMBINED WITH THE BOTTOM BASE. BOTH ENDS OF THE EXTERNAL SHEATH TUBE ARE SEALED WITH SEALING GLUE FOR PROTECTION OF THE COIL. THE POSITION OF THE FLOAT BALL IS CHANGED SUBJECT TO CHANGED OF LIQUID QUANTITY, AND CHANGE OF THE COIL INDUCTANCE IS CONVERTED BY THE CIRCUIT BOARD IN THE UPPER STATIONARY SEAT INTO VOLTAGE FOR DRIVING A DISPALY INSTRUMENT TO SHOW THE LIQUID QUANTITY.
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