Patent ID: 8539829

Claim:
A retrofit assembly for use with a fuel level probe having a shaft extending through a tank interface into a fuel storage tank, said shaft comprising a magnetostrictive element extending therealong, said retrofit assembly comprising: a fuel quality sensor for mounting to a terminal end of said probe; an isolation sheath having a proximal end and a distal end, said isolation sheath sized to be received over said fuel level probe shaft and extend between said fuel quality sensor and said tank interface; said isolation sheath having a cross-sectional profile configured to define at least one passage when said isolation sheath is received over said fuel level probe shaft, said at least one passage extending between said proximal end and said distal end of said isolation sheath; and a product-level float comprising at least one product-level magnet for measuring the level of fuel in said fuel storage tank, said product-level float configured to translate along said isolation sheath as the level of fuel in said fuel storage tank changes.