Does the gauge read true for all phases of the runup on the ground? What is the configuration of the aircraft, tricycle or taildragger? Have you changed either the earthing point (was it originally connected to the instrument earth?) or the power supply bus or both to the gauge in the refit? If so what else is on the bus or earth that may be affecting the voltage to the unit when in flight that would not be a factor on the ground?
Have you tried placing a volmeter across it to check for fluctuation in the potential upon transition from land to air? Have you tried shutting off equipment in the air to try to eliminate them once the condition is manifest? I know I've sort of covered some of the things you've already mentioned, but I'm just trying to get a feel for how far you've taken the testing. Cheers. Pete. -------Original Message------- From: Brian G. Douglas List-Post: [email protected] Date: 07/29/06 03:50:30 To: KRnet Subject: KR> Re: KR Fuel Indication problem Hi All! I have a fuel indication problem that has baffled me. I have the header tank. The 2 point set capacitive fuel probe with the westach fuel gauge. Now for the problem. It has worked fine for the last 70 hours till I redid the dash. Now on the GROUND the gauge is accurate but when I go flying the gauge in not accurate it reads low, about 1/4 lower than it should. It test fine. I recalibrated it with the set points. I checked the wires. Insured that the ground was good. (I ran it to the main cockpit ground no to my instrument ground) It does not change with different things on. But as soon as I land it works like it should ANY MORE IDEAS ??? See you ALL at the gathering Brian G. Douglas Killeen Texas N8575C KR2 w/Training Wheel ;-) ----- Original Message ----- _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html
