These level gauges are used for measuring the level in a vessel. These can be used for maxinmum pressure of upto 150kg/cm2 and a maximum temperature of 400℃. Constructional features include 2.5 metre single piece construction with multiple glasses between process connections. A pair of auto shut off ball check valves in material of construction Carbon Steel or Stainless Steel and Polypropylene ad optional.
Working Principle
Transparent level gauge employ two transparent glasses and a liquid chamber. The liquid level gauge is indicated as a result of difference in the transparent properties of the two media. For water/sream aoolications, an illuminator is mounted on the rear side of the level gauge with its light rays deflected upward into the water column. This enables the observer to see the illuminater surface of the water as the light rays impinge on the surface of separation between water and steam are reflected back to the eye of the observer. For high temperature application mica shield is used.