Analyzer for analyzing moisture in ground conductance

The invention relates to a ground condcutive water cut analyzer for measuring water cut in oilfield export liquor. It is characterized by that the described analyzer includes an electric conductance sensor, excitation source generation circuit, voltage differential signal detection and voltage/frequency signal covnersion circuit. The described electric conductance sensor is formed from insulating tube, ring excitation, electrode mounted on the inner wall of insulating tube and ring measurnig electrode. Under the action of excitationsource generation circuit the excitation electrode can provide alternating current with constant magneitude, and under the action of voltage/frequency converter the pressure-different signal inputted by measuring electrode can be converted into frequency signal and outputted, then passed through power amplifier and transferred into secondary meter. Its measurement accuracy is high, repeatability and good consistency.