Liquid level gauging system with bubble shedding reflectors

摘要

A reflector target (100) includes a reflector (104) defining a tapered reflector surface (106). The reflector (104) includes an apex opening (103) and an opposed base opening (101), wherein the base opening (101) has a larger perimeter than the apex opening (103). The tapered reflector surface (106) extends between the openings (101,103) and forms a tapered passage (105) there-between. The tapered reflector surface (106) is configured to resist the accumulation of surface bubbles on the reflector surface (106) by movement of bubbles along the reflector surface (106) out through the apex opening (103).