SIGHT GLASS LEVEL GAUGE EPUB DOWNLOAD!
Jump to Reflex gauges - Instead of containing the media in a glass tube, the gauge by the water and lose their effectivess at displaying the liquid level. Two technologies typically used for local indication are armored sight glass and magnetic level indicators (MLI). Armored sight glass usually. A basic standard tank level gauge consists of a toughened continuous section of borosilicate glass tube which is connected at both the top and.
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Incorporated into this body are the liquid channel if necessary the heating channel and the seating sight glass level gauge for the chambered seals and sight glasses. Onto the body are mounted, or are already integrated, the valve heads and process connections.
Sight glass - Wikipedia
Drain or vent are also possible. Glasses from borosilicate glass in accordance with DIN are used for our glass gauges. The rear of the glass, in contact with the media, has grooves moulded into its surface, running vertically.
Incident light entering the glass is refracted at the rear surface in contact with the media. In the region that is contact with the gas, most of the light is reflected from the surface of sight glass level gauge groove to the next and back sight glass level gauge the operator, appearing silvery white.
In the region that is in contact with the liquid, most of the light is refracted into the liquid causing this region to appear almost black to the operator.
Due to the caustic nature of boiler anti-scaling treatments "water softeners"reflex gauges tend to become relatively rapidly etched by the sight glass level gauge and lose their effectivess at displaying the liquid level.
Therefore, bi-colour gauges are recommended for certain types of boiler, particularly those operating at sight glass level gauge above 60 bar. Bi-colour gauges[ edit ] A bi-colour gauge is generally preferred for caustic media in order to afford protection to the glass.
The gauge consists of a vertically oriented slotted metal body with a strong plain glass to the front and the rear. The front and rear body surfaces are in non-parallel vertical planes. Behind the gauge body are light sources with two quite different wavelengths, typically red and green.
Level Gauge & Water level Indicators & Detectors - Gems™
Due to the different refraction of the red and green light, sight glass level gauge liquid region appears green to the operator, while the gas region appears red. Unlike the reflex gauge, the glass has a plane surface which it does not need to be in direct contact with the media and can be protected with a layer of a caustic-resistant transparent material such as silica.
The liquid is contained in a chamber of strong, non-magnetic material, avoiding the use of glass.
The level indicator consists of a number of pivoting magnetic vanes arranged one above the other and placed close to the chamber containing the float.
The two faces of the vanes are differently coloured.
Liquid Level Gauges & Valves
As the magnet sight glass level gauge up and down behind the vanes it cause them to rotate, displaying one colour for the region containing the liquid and another for the region containing gas.
History[ edit ] The first locomotive to be fitted with the device was built in by John Rastrick at his Stourbridge works.
More structurally sophisticated than the water gauge, the contemporary sight glass — also called the sight window or sight port — can be found on the media vessel at chemical plants and in other industrial settings, including pharmaceutical, food, beverage and bio gas plants.