Tankerpilot75
Well Known Member
RV7A - 523RM. Purchased from builder in April 2015. I am having trouble getting my EIS system to provide reasonably accurate fuel tank readings. The tank floats were changed out with bends on the floats according to VANS instructions. I followed the procedures outlined by GRT for calibrating the readout but when I enter the AUXSF and AUXOFF numbers I have computed, the resultant fuel level readouts were NOT VERY USEFUL. I went back to the original EIS settings and they got closer but still significantly off.
Right now the AUXSF setting I use is 250 and the AUXOFF setting is 571. Example: When actual fuel levels were measured by draining the tanks, actual fuel on board was approx. 11 gallons and while the EIS system indicated 16 to 17 gallons with these EIS settings. Thankfully, the total fuel on board, as measured by fuel flow, is very accurate (within tenths of gallons). I would like the EIS settings to at least closer reflect actual fuel in each tank.
I assume I am not the only person who has experienced this issue. Does anyone have recommended AUXSF and AUXOFF settings they use that work well for them?
Right now the AUXSF setting I use is 250 and the AUXOFF setting is 571. Example: When actual fuel levels were measured by draining the tanks, actual fuel on board was approx. 11 gallons and while the EIS system indicated 16 to 17 gallons with these EIS settings. Thankfully, the total fuel on board, as measured by fuel flow, is very accurate (within tenths of gallons). I would like the EIS settings to at least closer reflect actual fuel in each tank.
I assume I am not the only person who has experienced this issue. Does anyone have recommended AUXSF and AUXOFF settings they use that work well for them?