Jerry,
Going back some years, we used to test syringe pump occlusion levels using a fluid filled syringe and an in line pressure meter as we still do on pumps with in line pressure sensors. The problem is that every admin set and syringe combination will have a different compliance and stiction level therefor giving you inconsistant occlusion readings.
For some time now, when setting/testing occlusion levels on syringe pumps, we too have been using a dynamometer (force gauge) as Jeff suggested, which eliminates the inconsistances.
I also agree with Jeff that should you require technical advice, Brian is your man at Graseby.
If you absolutely must use a fluid filled syringe, always use a new one.
Good luck,
Ivor
