Measuring Principle
The principle of reflex level gauge is based on the difference in the refractive indices of liquid and vapor. The gauge glass has prismatic right-angled grooves on the side facing the liquid. The level is indicated as a result of the light refraction principle. The liquid filled area completely absorbs the rays of light and appears dark; while the rays of light are totally reflected in the gas/air filled area which appears bright.


  • Single glass level gauge
  • Fully cover by fabrication carbon steel body
  • Pressure rating PN16, 25, 40
  • Flanges standard = DN20/PN40 or DN20/ANSI 300
  • Glass standard type A = size 30mm
Contact Us