Difference between reflex and transparent glass
Transparent glass DIN 7081
Transparent glasses have a smooth surface on both the medium and atmospheric sides. These glasses are mostly used in longitudinal sight glasses with open housings on both sides for mounting on containers or pipelines.
INFO Data sheet Reflex and transparent glass - differences and application:INFO - Reflex and transparent glass – (1.01 MB)
The smooth surface has the advantage that mica protection screens can be used for applications with particularly aggressive media. This is not possible with reflex sightglasses!
Reflex glass DIN 7081
A reflex sight glass is used to read the liquid level directly with the eyes or by means of a camera. On the medium side, grooves are pressed into the reflex sight glass, which make the level clearer and easier to read. They are mostly installed in closed fittings such as level indicators.
The principle of reflex glass is based on the difference in the refractive indices of liquid and gas or water and steam. The liquid level shows a striking dark colour for the liquid space and a bright white colour for the empty or gas space.