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Technical Information
Test Configuration Screen
Test Configuration
The Test Configuration Menu allows you to:
Program and activate process setpoints (leak rate pressure and audio)
Enable or disable leak detector advanced features
Select Leak Detection specific applications with auto parameters setup with
step-by -step instructions for enhanced operation.
Reject and Audio Set Points
Reject and Audio Set Points make the acceptance and rejection of parts more
obvious. By creating a set point, you let the system indicate if the part meets
specification or not. For example, you select LEAK RATE #1, set the value to 1.0E-8,
set the reject activation to greater than > (activate when the leak rate is above that
set point), and turn the set point ON. Then when the system is put into TEST, it
indicates on the front panel that the part has not meet the set point requirement,
until it gets below the set point value and then the set point failure indication
disappears.
Multiple set points are used when you want to indicate several levels of acceptance.
There are times when you may want to assure the leak detector is working properly
by bounding the failure limit. For example, if LEAK RATE #1 were set as per above,
then any leak rate below 1.0E-8 would pass the part. Also assume that the leak
detector was not seeing helium, it would always pass parts. One way of preventing
this from happening is to periodically read the internal calibrated leak. Another way
is to place a 5.0E-10 range leak into the test port along with the part and program a
second reject set point to fail if the leak detector were to go below that value. In that
case, you would program LEAK RATE #2 to 4.7E-10, set the reject activation to less
than < (activate when the leak rate is below that set point), and turn the set point
ON. In this case, when the system is put into TEST, the system indicates a failure if
the leak rate goes below 5.0E-10.
Press Reject & Audio Set Points on the Menus screen.
The Reject and Audio Set Points screen appears (see the following figure).
Use this screen to:
Set the parameters to enable or disable.
Display or change the value of the four reject set points and the audio set
Agilent Helium Leak Detector User Manual
point.
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