yellow jacket TITAN P51-870 User Manual

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13in vacuum pressure during a system evacuation. Because the evacuation operates on alogarithmic scale, the resolution of the needle movement increases in a deeper vacuum meaningsmall fluctuations in vacuum pressure become more apparent in a deeper vacuum.Interpreting the Evacuation Graph:In addition to the evacuation gauge, evacuation mode also features a fully functional evacuationline graph like those in Pressure/Temperature mode. Unlike the pressure and temperaturegraphs, the evacuation graph features a logarithmic y-axis. This means that the evacuation graphcaptures the full scale of an evacuation but is more precise in a deep vacuum allowing the userto observe small fluctuations in vacuum pressure. An orange leader line is used to plot new datafrom left to right. This function allows the user to compare old data to newer data as eachmeasurement is recorded and displayed. The line graph fully overwrites the old data every 200seconds (approx. 3.5 minutes) and will begin again from the left side of the graph.Operating the Evacuation Mode:Before beginning an evacuation, connect the YJ vacuum probe (67030) to either the A1 or A2connectors on the back of the device. Connect the vacuum probe to the system at a sufficientdistance from the vacuum pump such that it will not disturb the vacuum reading. Use the“Target” and “Hold” buttons to set the target vacuum level and vacuum hold timer respectively.Pressing each of these buttons will cycle between a range of available values, with the last valueselected being automatically saved. Target vacuum level can be adjusted in 6 increments: 200,300, 400, 500, 750, 1000microns (or equivalent selected vacuum unit). Vacuum hold timer canbe adjusted in 7 increments: 1m, 3m, 5m, 10m, 15m, 30m, None.The session timer, displayed in the top right corner will begin incrementing the momentevacuation mode is entered. Use the session timer to monitor the overall length of theevacuation session. While evacuating a system the %/min will change to reflect the current %change in vacuum pressure every minute. A larger number will indicate a faster evacuation ratethan a lower number. Additionally, the estimated time remaining is denoted by ETR and willadjust based on the current %/min and the target vacuum level setting.Once the set target vacuum level has been reached, the vacuum hold timer will start to deplete.When the hold timer reaches zero, an alarm will sound indicating the evacuation has beencompleted. In addition, the user will be prompted to start a pressure hold test as shown in Figure20. By tapping the button “Begin Pressure Hold Test?” the user will be taken to the pressure risesetup screen and the alarm will be silenced. If the button is not selected, the user will remain onthe evacuation screen. To silence the alarm, adjust the desired target vacuum level and continue