I would like to know about fine tuning of an airplane Fuel Gauging probe. It is basically a cylindrical capacitor made of an inner composite tube of about 0.5 inch diameter and an outer composite tube of about 1 inch diameter. The length of the tubes varies from about 3 inches to 8 inches. The...
It seems that I have failed to give a clear explanation about my problem I try again:
The observed variation of capacitance is not related to actual application of the device. It is observed during testing and measuring the dry capacitance. The measurements must fall within plus or minus 0.2...
The measurements are done on identical units at room temperature in a static situation and the dielectric between the tubes is air. Calibration is not an option. We have to meet a spec. that calls for limited range of capacitance variations.
I don't have a device uploaded yet.
The capacitance measurements of “Fuel Gauging Tubes” (FGT) that are composed of carbon composite inner and outer tubes shows unacceptable level of variations and I need to reduce the variation of capacitance.
I would like to know what are the contributing factors to capacitance variations...