The heron ull-T-mate Ullage meters are the ideal instruments for monitoring the fluid levels in storage tanks above or below ground. The instruments detect the surface level of all fluids such as oil, fats, detergents, acids and alkaline at temperatures as high as 100°C. The Heron ull-T-mate uses the highest quality, accurate (USS-GGG-T-106E) tapes. The tapes are jacketed in Kynar giving exceptional chemical resistance. Power is supplied by alkaline batteries housed in the hub of the instrument providing over 600 hrs of continuous use.