Fluid conductivity detecting means

摘要

An element used in determining the conductivity of fluids. An insulating tube is provided for carrying the fluid to be measured. Cylindrical electrodes surround the tube at laterally spaced positions. When a signal is applied to the electrodes, the tube and fluid act as dielectric in a capacitor. Measurement of the amount of current passed by the capacitor provides an indication of the conductivity of the fluid. Means is provided to minimize the effect of stray currents.