SENSOR MEASURING HYDROGEN ION CONCENTRATION

摘要

PURPOSE: A sensor measuring hydrogen ion concentration is provided to easily handle the sensor and simply carry out the sensor while maintaining accurate measurement and extending the life, thereby improving the productivity and application. CONSTITUTION: A sensor measuring hydrogen ion concentration includes a semiconductor wafer base(20) having a measurement groove(22) and a reference groove(24) each opening the lower part; a measurement electrode(26) placed on the surface of the measurement groove and connected to a voltmeter(36) for measuring excited voltage; a reference electrode(28) placed on the surface of the reference groove and connected to the voltmeter; a sensing membrane(30) closing the lower hole of the measurement groove and contacting with a solution to be measured; an agar(32) closing the lower hole of the reference groove and contacting with the solution to be measured; a filling solution(34) filled in each groove, contacting with each electrode, and independently contacting with the sensing membrane and the agar; and a sealing member(38) applied on the base for preventing the solution filled in each groove from evaporating and drying.