Three-electrode type crude oil water content sensing and measuring device

• Main Authors: LI HONGYAN, SU FENG, WANG CUNBO, HU NAN, SUN KAI, REN GUISHAN, FANG RUI, XU JINMIN, CHEN XUEMEI, MI LIFEI
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a three-electrode type crude oil water content sensing and measuring device. The device comprises a sensor, wherein the sensor comprises an excitation electrode; protection electrodes are arranged at two ends of the excitation electrode; insulating materials are arranged between the excitation electrode and the two protection electrodes; the excitation electrode and the twoprotection electrodes are hollow cylinders; leads in the excitation electrode and the two protection electrodes are respectively accessed to a reverse amplification circuit; the lead of the excitationelectrode is accessed to a negative input end of the reverse amplification circuit; the leads of the two protection electrodes are accessed to a positive input end of the reverse amplification circuit; a negative feedback end of the reverse amplification circuit is accessed to a resistor Rf with a known impedance value; the positive input end of the reverse amplification circuit is accessed to input voltage Ui; and the ex