Testing parameters determined for one of the Computrac® moisture analyzer models (or series) will not necessarily be identical for another model or series. Differences in the heater size and configuration, balance, electronics, microprocessors, and the temperature control circuits all combine to create different and unique requirements for different test samples. In general, the MAX® 2000 (or MAX® 1000) will test at temperatures slightly lower (10 to 15°C) than those used in the MAX® 50 series analyzers. When comparing test temperatures between the MAX® 2000 (or MAX® 1000) and the MA series analyzers, the newer MAX® 2000 (or MAX® 1000) model will typically test at a test temperature lower (10 to 30°C) than the temperature used on the older MA system.
In order to determine the correct test temperature in any of the Computrac® moisture analyzer models, products should first be tested using the primary method (such as the standard oven, vacuum oven, or Karl Fisher titration) to determine their moisture content. Next, the sample should be tested on the Computrac® moisture analyzer.
To determine the correct test temperature that produces accurate, reproducible results that correlate with the reference method, see the instrument’s User’s Manual. For the MAX® 2000 (or MAX® 1000) refer to “Determining the Proper Test Temperature” in the section titled “Performance Enhancement.” For the MAX® 50 and MA series analyzers, this is described in the section “Determining the Proper Test Temperatures.”