The Instrumentation Analyzer helps to improve instrumentation maintenance and to quickly detect failures.
Measurement errors are systematic and random, but still affect the results and system performance if not considered accordingly. Systematic errors are typically constant or proportional to the true value. If the cause of the systematic error can be identified, then it usually can be eliminated. Systematic errors are caused by imperfect calibration of measurement instruments or interference of the environment with the measurement process. Random errors are always present in a measurement. They are caused by inherently unpredictable fluctuations in the readings of an instrument. Random errors show up as different results for the same repeated measurement. They can be estimated by comparing multiple measurements and can be reduced by averaging multiple measurements.
The Instrumentation Analyzer continuously compares and analyses in real-time the readings from field instrumentation with the calculated values of the RTTM to detect drift or instrument malfunction.