The MA series moisture analyzers (MA-5A, MA-2A, MA-1A) use technology originally developed in the late 70’s. These units use a semiconductor junction temperature transducer, which generates an output current proportional to temperature. Like the MAX® 50 series, the MA units also place the temperature sensor above the sample position. The difference between temperature at the transducer and at the sample surface was experimentally determined and programmed into the software.
The prediction ending criteria used by all the MA series analyzers requires that the difference between predicted moisture and the actual moisture is less than 0.25%. It also requires that successive predictions agree within 0.062%. This prediction algorithm is most similar to the MAX® series’ “EC97” ending criteria.