144 FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V 1-0/2020-10 · © SICK Engineering GmbH
Maintenance
Fig. 95 Validation certificate
9.4.2
Trend analysis – predictive maintenance
It is also possible to carry out a trend analysis. With the trend analysis, evaluations of
various measurement and diagnostic values at past observation points can be made.
If the trend analysis suspects a fault in the future, the manufacturer recommends
performing another trend analysis after about 2 months, but at least before reaching the
predicted date. This serves to validate the trend in order to then initiate appropriate
countermeasures.
The predicted date is based on the assumption of a linear trend and therefore only gives a
realistic estimate for linear measurement/diagnostic values.
Fig. 96 Trend analysis
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