Sight Glass Level Measurement Working Principle

A metal ball normal used in the tube to prevent the fluid from flowing out of the gauge.

Sight glass level measurement working principle.

We have 3 technologies for level measurement. Working principle reflex glass level gauges working principle is based on the light refraction and reflection laws. The sight glass has prismatic right angled grooves on the side facing the liquid and vapor space. Glass level gauges level measurement with glass level gauges reflex and transparent function principle reflex ksr transparent glass level gauges in this type of sight glass indicators the liquid is included between two transparent sight glasses.

How does the sight glass level indicator work. The liquid column is contained within the recess of the liquid chamber behind the sight glass which is clamped to the gauge body. Today however sophisticated float switches have replaced sight glasses in many such applications. Reflex glass level gauges use glasses having the face fitted towards the chamber shaped to have prismatic grooves with section angle of 90.

The material used for its transparency can suffer catastrophic failure with ensuing environmental insult hazardous conditions for personnel and or fire and explosion. The technologies available include. Simple sight glasses may be just a plastic or glass tube connected to the bottom of the tank at one end and the top of the tank at the other. The technology suitable for any application would depend on the application and or user preference.

The level of liquid in the sight glass will be the same as the level of liquid in the tank. Direct level indication without power supply transparent sight glass level indicator reflex sight glass. High pressure sight glass sight glass a is more suitable for gauging an open tank. This allows a sight of the fluid and therefore provi des a clear indication of the level.

Tubular glass of this sort is available in lengths up to 70 inches and for pressure up to 600 psi. The principle of reflex level gauges is based on the difference in the refractive indices of liquid and vapor. Low pressure sight glass b. The simplest and oldest industrial level measurement device is of course the sight glass.