ORO(A3F) Oil Acid Value Tester I. Product i ntroduction In power systems, factories, mines and enterprises, there are a large number of oil - filled electrical equipment. The acid value of insulating oil is a necessary routine inspection item. The automatic insulating oil acid value tester of our company is improved on the basis of the original series of automatic insulating oil acid value testers, and has the following characteristics: a) It can test transformer oil, and can