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After gripping the probe, the automated air tightness test failed or gave a warning.
What shall I do now?
The leak flow is indicated in Pascal [Pa] because any leak flow generates a pressure drop along the pneumatic tubing, which we can measure with our pressure sensors. In a perfectly tight system the air flow should be 0 ul/s and the corresponding pressure drop is also 0 Pa.
Warning < 1 Pa = no problem
Values below 1 Pa are still safe to work, despite the warning by the system. Continue with your experiment as usual.
> 1Pa = something is wrong
In case the leak generates a pressure drop above 1 Pa, troubleshooting is required:
Gripping: Drop and grip the probe again. Often this resolves the issue.
Gripping height calibration: If you can see that gripping looks "odd" and the probe does not come into the center, please calibrate the Z stage level again. Also calibrate the XY position of the Z stage again.
Tubing: Check if the tubing is connected properly and/or if there are visible damages in the tubing.
Dirty head: The sealing screw and/or prism are dirty or the O-ring is damaged. Please follow the instructions here.
Probe defect: In rare cases the consumable might have a defect if the above methods didn’t solve the problem. Have a look under the stereoscope onto the probe reservoir if you see any cracks or chipped parts please contact your FluidFM distributor sending a detailed written description of the problem.
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|Asked: 9/13/18, 9:40 AM|
|Seen: 548 times|
|Last updated: 6/10/20, 5:38 AM|