- ページ 8
計測機器 DigiVac Bullseye Precision Gauge PiezoのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。DigiVac Bullseye Precision Gauge Piezo 20 ページ。
8
The bar graph visualizes the current sensor reading with a stepped bar.
The pumpdown graph plots time horizontally and log pressure vertically. The vertical pressure
scale is logarithmic, indicating order of magnitude from one mTorr to atmosphere.
The autoscaling (or, autoranging) time graph (AKA the line graph setting) is a
microscope
into
the pump down data.
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. The height of the graph display is the pressure range of the
data set in a linear scale (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.
High Resolution
The High Resolution format has three digits of precision. For example, an internal vacuum
value of 1234 millitorr (μm Hg) would be displayed as 1.23 Torr in the Precision numeric
format with Torr units. Additionally, this format gives the raw vacuum measurement data
which may be useful for trending, but may result in a noisier reading.