Sight Glass Level Measurement

How does the sight glass level indicator work.

Sight glass level measurement.

In the gas or steam phase the light is reflected by the prismatic grooves of the sight glass so that bright indication is achieved. Even if the glass is broken you can usually get a good measurement. Construction and working of gauge glass technique. A visual indication of the level can be obtained when part of the vessel is constructed from transparent material or the liquid in a vessel is bypassed through a transparent tube.

Measure the length of the old sight glass to the 1 16th this may not be possible as the glass is most likely broken. Transparent level indicators are available in double cover plate design for pressure ranges up to pn100. Utilizing a combination of proven buoyancy principles along with the benefits magnetism mlis can be customized to fit virtually any process connection arrangement on the vessel. Direct level indication without power supply transparent sight glass level indicator reflex sight glass.

Level measurement using gauge glass technique. In the liquid phase the light is absorbed resulting in a dark indication of the level. Magnetic level indicators mli have revolutionized the global visual indication market by offering a safer reliable and high visibility alternative to common gauge glass assemblies. Operators use sight glasses to visually verify stages of a process inspect process media and to observe liquid levels it may seem low tech but a sight glass is a highly engineered component designed for particular levels of pressure temperature corrosion resistance thermal.

With this level indicator design the liquid is encapsulated between two transparent sight glasses. The sight glass is marked with graduations to allow the level to be measured. The principle of the reflex level indicator is based on the reflection of light. It is used for continuous indication of liquid level within a tank or vessel.

A sight glass instrument consists of a graduated tube of toughened glass which is. Transparent sight glass level indicator. A very simple and effective technology for direct visual indication of process level. The level gauge or sightglass is to liquid level measurement as manometers are to pressure measurement.

This allows the liquid to be looked through and thus provides a clear indication of the level. There are only two nominal diameters that we carry 7 8 od 5 8 id and 3 4 od 1 2 id. The main disadvantage of this method is that it only gives level indication local to the vessel. A sight glass also called a gauge glass is used in the liquid level measurement.

A manual approach to measurement sight glasses have always had a number of limitations. The simplest and oldest industrial level measurement device is of course the sight glass.