WIKA LGG serie Betriebsanleitung Seite 6

2. Design and function
LGG-T
Transparent glasses per DIN 7081
From the rear, incident light passes
through both sight glass plates with
EN
the media between them. The fill
level is visible as a line (meniscus)
or directly due to the liquid itself.
Viewing direction
per DIN 7081
LGG-M
Refraction with mica shields
From the rear, incident light from
a lamp passes through both mica
shields with the medium between
them. The lamp and medium are
arranged at an angle. In the gaseous
phase, the light passes directly
through, with liquid, the light is
Viewing direction
refracted sideways. Thus the filling
Refraction type with mica shields
level is visible as a black column,
the gaseous area as a light column
over it.
LGG-G
Transparent indicator with glass
tube
The filling level can be read directly
at the glass tube as a result of the
liquid column.
6 Operating instructions glass level gauge, model LGG