DigiVac Bullseye Precision Gauge Piezo Manuale d'uso - Pagina 11
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The bar graph visualizes the current sensor reading with a 6-stage stepped bar.
microscope
The auto-scaling (or, auto-ranging) time graph is a
into the pump down data.
Maximum &
Current or
Minimum value
most recent
is measured
pressure
range
In this mode, the pump down graph is shown with a linear pressure scale that is fit to the
pressure range of the data set.
linear scale
The height of the graph display is the pressure range of the data set in a
(not
log). The top left figure is the maximum value in this range, and the bottom left figure is
the minimum value in this range. The top right figure is the current or most recent value
in the instrument.
Sometimes this visualization is not useful, showing noise. This noise comes
from the instrument's process of measurement, as well as the vacuum system under
measurement. The auto scaling graph is a data visualization microscope, in this sense.
This visualization can show a very small climbing or descending trend
that the vacuum analysis algorithm has not declared as a leak or pumping.