DigiVac Bullseye Precision Gauge Piezo Manuale d'uso - Pagina 7
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would corrode a steel bolt thrown into it. Over time the sensor will degrade and cease to
operate. The isolation in the 775i sensor is achieved through a stainless steel diaphragm that
comes in contact with the media to be measured, commonly called the wetted surface. So
use the 775i with diesel fuel, gas, nitrogen or alcohol, it's happy! The 775i sensor was
designed to thrive. The only time the sensor may degrade is when substances calcify on the
stainless steel diaphragm preventing it's movement. If the readings seem sluggish, check the
sensor. When in doubt, use an otoscope to look in the sensor to see if any foreign matter is
stuck near the diaphragm. Wash out with solvent, but do not poke the diaphragm. If the
foreign matter is still obvious there it may be time to replace the sensor. The sensors are
easily replaced and have excellent interchangeability.
Isolated sensors are immune to damage from corrosive processes and materials.
The Bullseye Piezo has two modes of display: numeric and graphical. The graphical display
mode features a line graph with time horizons of 1 minute or 1 hour.
Display Options
The numeric display has three numeric formats: Low Resolution, High Resolution and
Scientific Notation.
Display modes are selected from the display menu and numeric formats are selected from the
Setting option "Display". The SEL button enters and traverses the Settings menu.
The numeric display shows the currently configured units. In these examples, the vacuum
pressure units are "mbar" or "torr".
In any display mode, the UP and DOWN buttons turn the backlight on and off (respectively),
the SEL button enters the configuration menu, and the PWR/EXIT button turns the gauge on
or off.