UTI (Ullage, Temperature, Interface) is an ultrasonic measure that integrates 3 functions in 1: Measuring Ullage in the tank, Temperature temperature and oil/water interface. Combining the first 3 letters of 3 features should be called UTI. The device is used mainly on oil vessels, chemical vessels and general liquid cargo tank depots.
There are not many UTI manufacturers for oil/chemical vessels, it is relatively specific and picky customers. Famous companies include MMC, HERMetic (Tanksystems), Tanktech, Marsen, Rongde.
Choosing UTI (Ullage, Temperature, Interface) is not difficult, because the firms are large and reputable and quality manufacturers. Whichever company is more market-peddd, choose to buy. Technically, there are 2 problems: Restricted and Gastight + Petroleum and chemicals. Users pay attention to choose the right type, mistakenly not usable. See Restricted or Gastight here