The detection of insulating oleic acid value is a routine inspection item for electric power system and oil-filled electrical equipment in industrial and mining enterprises. Oleic acid value tester adopts the principle of neutralization method, under normal temperature state, microcomputer control automatically complete liquid, stirring, titration and end point judgment. Adopt touch type LCD screen to select all working parameters, man-machine dialogue interface is simple and friendly, easy to operate, the average analysis cycle of oil sample is about 2 minutes. Can display up to 35 groups of measurement results, and can print out a number of parameters related to the measurement. The purchase of "insulating oleic acid value tester" should pay attention to several points:

1. Reagent bottle contains extraction liquid and neutralization liquid. The extracted liquid is stored in glass containers to ensure no plastic additives. The neutralization liquid is stored in polyethylene plastic bottle, which completely avoids the possibility of reaction between potash and glass. Instrument with neutralization liquid balance gas solid purification device, completely avoid carbon dioxide and water vapor on the concentration of neutralization liquid, more will not happen to high concentration of caustic potash or caustic soda purification solution as titration standard solution used accident.

2, microcomputer control automatically complete liquid, stirring, titration and end point judgment. Adopt touch type LCD screen to select all working parameters, man-machine dialogue interface is simple and friendly, easy to operate, the average analysis cycle of oil sample is about 2 minutes. Can display up to 35 groups of measurement results, and can print out a number of parameters related to the measurement.

3. The level of the oleic acid value tester and the accuracy of the instrument are two different concepts, and the instrument level is not completely consistent with its accuracy. Acid value is determined by the level of its indicator (referred to as meter) indexing value (resolution or small display value), such as: indexing for 0.1pH instrument called 0.1 instrument; Instruments with a small display value of 0.001pH are called 0.001 class instruments and so on.

And the accuracy of the oleic acid value tester is the comprehensive error of the standard solution of the meter and the electrode, which is not only related to the meter, but also related to the glass electrode and the reference electrode. Starting from the actual use requirements, the meter's index value is 0.1 ~ 0.001pH, if necessary, according to the current level of science and technology, can make a more precise meter. However, due to structural and manufacturing reasons, the performance of common electrodes can not reach a completely ideal level.