Exists inside the flow aisle to measure the conductivity of the liquid which in the non contact process exists inside the device and

摘要

(57) Abstract This invention flows and regards the use of the device and method and the said device and the said method in order to measure the conductance of the liquid which exists inside the passage in non contact system. According to this invention, it flows and in order to surround the passage, toroidal coil is arranged accurately. This toroidal coil is connected in order with capacitance to form the oscillation circuit. Furthermore according to this invention, the electric quality quantity of this oscillation circuit is measured, conductance is required from the electric quality quantity which was measured.