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The accuracy of moisture analyzer results may be influenced by several factors. The most important is variability of the heating temperature. Routine testing of the heating and weighing unit are therefore necessary to ensure reliable determination of the moisture content and correct functioning of the instrument.
With our easy to use temperature kit you can instantly verify the operating temperature of the heating unit and calibrate and adjust the instrument to ensure reliable results.
Check the weighing cell for unstable behaviour or defects by performing a simple sensitivity test with calibrated adjustment weights and adjust the instrument if needed.
SmartCal™ is an innovative test substance that offers a fast and efficient way to verify overall moisture analyzer performance. Testing your moisture analyzer regularly with SmartCal™ ensures that your measurements are reliable and fulfil the demands of your industry’s regulations
METTLER TOLEDO is an expert in moisture analysis and offers a wide range of reliable and easy to use moisture analyzers to suit the needs of quality control, production and in-process control of many industries, such as pharma, plastics and the food industry.
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Routine testing of a moisture analyzer is the regular check of the heating unit, the weighing unit, and the whole moisture analyzer instrument. By regularly testing and if necessary adjusting the instrument you will ensure consistent and reproducible results for the entire lifetime of your moisture analyzer. Furthermore, routine testing provides documented evidence about the instrument's correct status. Periodic testing is what quality standards such as ISO 9001 require: "Measuring equipment shall be […] verified […] at specified intervals […]".
Testing is the determination of a deviation between the measured value and the true value without making any changes. Adjustment is testing plus making the changes (corrective action) so that the measuring device is correct. Calibration is often used to describe either testing or adjustment but it is unclear what action the user actually means. That's why we distinguish between testing and adjusting to be clear about the action.
The moisture analyzer should be tested whenever it is installed or relocated and also at regular intervals. This regular moisture analyzer testing frequency depends on the individual risk of the customer. The risk is determined by factors such as criticality of the process, the temperature sensitivity of the sample, the number of samples per day and the customer's level of regulation.
A moisture analyzer consists of a heating unit and a weighing unit. Both components should be tested individually as well as together with the following moisture analyzer testing equipment:
