Measurement procedure
MP85A A0293_06_E00_03 HBM: public 71
8 Measurement procedure
You can start/stop measurement manually with the PME Assistant in Setup
mode, internally via a start condition, or externally via a digital input or the field
bus interfaces.
When measurement starts, the measured quantities acquired by the sensors
are copied to the internal memory of the MP85A process controller as x/y value
pairs with a time stamp, and rated as OK or NOK based on the windows you
have defined, an envelope curve or a tolerance band. In addition, you can
incorporate limit monitoring in the analysis. The most recent measured curve
can also be graphically displayed instantly. Independently from the display, you
can have all processes saved in the background.
8.1 Data reduction
y=f(x)
Measured quantity y (force) is recorded and rated as a function of a measured
quantity x (displacement). The measurement points are also given a time
stamp.
Advantage: Intelligent data reduction. Curve points are only generated when
there is a sufficiently large change to x or y. The values nx and ny can be
selected as desired.
Fig. 8.1 Force/displacement-driven process curve determination
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