Usually when choosing a moisture analyzer, it is best to choose a high-quality electrode instrument, which can extend the life of the electrode. In addition, the moisture analyzer needs to have good sensitivity, and the partial connection of the Karl Fischer reagent liquid path must be tight. Otherwise, reagent leakage will directly affect the test results.
There are several types of problems that moisture analyzers usually have. The first measurement time is too long. This may be because the selected shutdown mode is not appropriate. You can adjust the type of shutdown mode to solve the problem. The second situation is that the heating cannot be performed after the test is started. This may be caused by the overheating of the drying unit and the thermal overload protection function is activated. Because the drying unit has thermal overload protection, that is, the bimetal sensor, you can try to turn off the heating unit. The third situation is poor measurement repeatability. There are many reasons for this type of problem. The common selective drying time is too short, the sample is not completely dried, the temperature sensor is contaminated or damaged, the sample is uneven, and the selected temperature is too short. High or sample oxidation. The fourth problem is that there is no voltage. This may be because the fuse is blown or the instrument has been damaged and needs to be repaired.