Has anyone else had issues with the Agilent Lab Advisor Valve Test diagnostic?

I had a analyst report that the system was having major drops in baseline.  This usually means the outlet ball valve is stuck or getting stuck for our machines.  I went to perform a "As Found" diagnostic to show the issue.  When getting into LabAdvisor and connecting up to the system, I noticed a new test I must have not seen before and it was the "Valve Test."  I performed the test, it stated outlet ball valve malfunction, so replaced both (pump A and pump B).  Filled with IPA, then swapped back over to H2O and ran the valve test, same error with new outlet valves.

The only failing portion is during the first couple seconds of the test when it drops -4% pressure then floats back up and is steady (between -0.5 to 0.5% pressure).  I am wondering if the issue is with the Lab Advisor test and not the pump.  Further background here, I have ran the Leak test (passed) and system pressure test (passed).  Also, used a external calibrated flow meter to check at 1 ml/min and it reproduces at 1.019 for 6 min.

For now, I believe the pump is working fine, but the concept for this valve test seemed awesome, so I was sad to see it not working.

Any advice help is appreciated!

  • Hi  ,

    The valve test was recommended for the G1312B Binary pump having FW up to rev. A.06.50 and connected to Lab Advisor Software before version B.02.03. This test is not available for the more recent Series of Binary pumps so there may be a possibility that the test result is no longer a good indicator for pumps with more recent FW.

    If your baseline and pressure are now stable + leak rate test and system pressure tests passed, then the original issue should have been fixed by the valve replacement. These 2 tests along with observing pressure ripples/fluctuations are some of the simplest and most reliable automated tools to determine whether your valve is working.
    I hope this helps.

  • Sounds good.  Just wanted to double check why it was not working.  I had a noise and drift test fail before on LabAdvisor and it was due to a test not functioning properly.  The Leak test and Pressure test both passed and system has been working fine.  Thanks for the help!

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