Evaluating The Results - Agilent Technologies 1100 Series Reference Manual

Figure 10
Pressure [bar]
N O T E
N O T E
Troubleshooting and Test Functions

Evaluating the Results

Evaluating the Results
Defective or leaky components in the pump head lead to changes in the
leak-test pressure plot. Typical failure modes are described below.
Leak Test Pressure Profile
Plateau 1
Ramp 2
Ramp 1
Please notice the difference between an error in the test and a failure of the
test! An error means that during the operation of the test there was an
abnormal termination. If a test failed, this means that the results of the test
where not within the specified limits.
Often it is only a damaged blank nut itself (poorly shaped from overtightening)
that causes a failure of the test. Before investigating on any other possible
sources of failure make sure that the blank nut you are using is in good
condition and properly tightened!
92
Ramp 4
Plateau 2
Ramp 3
Time [minutes]
Plateau 3