yellow jacket 40870, Руководство пользователя

Страница: 21 / 31

18
1. Battery Life Indicator
2. Session Timer
3. Currently Selected Vacuum Units – Unit Settings Menu Shortcut
4. Currently Selected Refrigerant – Refrigerant Settings Menu Shortcut
5. General Settings Button
6. Currently Selected Mode – Modes Menu Button
7. Initial Pressure (Pi)
8. Pressure Limit
9. Test Duration
10. Percent Change per minute (%/min)
11. Current System Vacuum Pressure (Pvac)
Live system vacuum pressure is measured and compared to initial vacuum pressure readings to
determine if the system has gained pressure over time. Current system vacuum pressure is
displayed as a digital analog gauge, a line graph, and in a digital format displayed at the center of
the analog gauge.
Interpreting the Pressure Rise Gauge:
The pressure rise test features the same fully functional digital analog vacuum gauge as
evacuation mode. The pressure rise gauge operates on a logarithmic scale from atmosphere
(ATM) to 0 microns. A digital reading and currently selected vacuum units are displayed at the
center of the gauge. The needle of the pressure rise gauge adjusts in real time and can be used
to visualize fluctuations in vacuum pressure during a pressure rise test.
Interpreting the Pressure Rise Graph:
In addition to the pressure rise gauge, the pressure rise test also features the same line graph as
evacuation mode. The pressure rise graph plots in real time and features a logarithmic y-axis.
This means that the pressure rise graph captures the full scale from atmosphere to deep vacuum
but features more precision in a deeper vacuum. An orange leader line is used to plot new data
from left to right. This function allows the user to compare old data to newer data as each
Figure 26: Pressure Hold Mode – Pressure Rise Test Diagram
1
2
3 4
5
6
7
8
9
10
11