IMHO the capacitive system is the only way to go in this situation. Will the tank be Vinyl Ester? If so you can bury one of the plates in the side of the tank and standoff the other plate a few mm away inside to create your capacitance. The plate in the vinyl ester can be aluminum foil so the only real weight penalty is the plate in the tank. If your tanks are aluminum you can use that tank itself as one of the plates.
Read Jim Weir's June 2000 article here http://www.rst-engr.com/kitplanes/ www.rst-engr.com/kitplanes/KP0006/KPtext.doc Craig www.kr2seafury.com ________________________________ From: Rodger Nicolls <bandenok...@gmail.com> To: kr...@mylist.net Sent: Friday, June 1, 2012 2:53 AM Subject: KR> Fuel sender I'm building wing fuel tanks measuring 70" long, 10-12" wide (up against main spar), 6" deep at inside end and 4" deep at far end. Any suggestions for fuel sending unit? I have a pair of Rochester units which would only measure the fuel at the deep end, but a capacitance unit would measure only the first 24" inch, still less than half of the tank--and that's after spending another $ 140-160 for each tank. Opinions welcomed. Rodger Nicolls bandenok...@gmail.com Anchorage, AK _______________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html