Process Lighting and Visual Control Systems. Sight Glass for industrial process observation

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Sight Glass lights, Explosion Proof (Ex) and Non-Explosion proof lights.

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Remote observation of processes for better control and management

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Explosion proof Lumistar Luminaire

Explosion proof Lumistar Luminaires are for illuminating the interior of normally closed vessels. Lumistar Luminaires illuminate the interior of tanks, hoppers, silos, agitators and other normally closed vessels and reactors as well as visual flow indicators in potentially explosive environments. Sight glass luminaires that are used in potentially explosive environments Ex-type sight glass luminaires are…

Papenmeier Lumiglas®

Lumiglas® Sight Glass, Luminaires and Visulex Camera Systems can be found in the Pharmaceutical, Oil Refining, Food & Beverage Industries, Mining, Water Treatment, Power Generation, Port Operations and more. For every industrial application there is a sight glass available to enable an unrestricted view during process observation. Glass is an amorphous, not crystalline solid matter, which behaves…


For process observation equipment in the mining industry, Lumiglas® Luminaires are commonly used as these are light enabled sight glass. Sight glasses are mounted on material processing equipment in an explosion-proof zone that can be either underground or near the mine. Ex-lights – explosion proof lights help operators easily see materials, such as minerals, that are being…


100% uptime is an absolute necessity for power utilities and water treatment plants, which is why a sight glass or visual flow indicator must be highly reliable. Sight glasses and flow indicators are important components in utility applications such as waste water treatment, allowing operators to observe processes inside of pipes and vessels. Flow indicators…

Food and Beverage

Flow indicators and sight glasses provide the ability to observe and validate cleaning and draining in the food and beverage industry where industrial processing is required. Allowing operators to observe processes inside of vessels and pipes typically used in a brewery and cheese making equipment, fermentation tanks and processing vessels, pasteurization equipment, formulation equipment where observation, safety…

Chemical – Petrochemical

Sight glasses and flow indicators provide a window to see chemical and petrochemical processes. The two are in a variety of process equipment. Typically, reactors, dryers, agitators, purification systems, separators, evaporators, pressure vessels, furnaces and feed tanks have sight glasses and flow indicators. Many industrial processes involve thermal treatments, pressure equipment and corrosive process materials.…

What is a Sight Glass Indicator

Pipelines are different from tanks and vessels in that the sight glass is used to observe flow. The sight flow indicator is an assembly consisting of two opposed sight glasses mounted to a housing. This arrangement allows ambient light to illuminate the flow from behind. There are also versions using a tubular glass that admits…

What is a Sight Glass

Typically, a sight glass, a highly-engineered sight glass used in industry, is a kind of window or view port on a processing tank or pipeline. Sight glasses are used in industries ranging from refineries to breweries. Perhaps because of their widely-varied applications, sight glasses are called by different names. Sight Glass Window. Broadly speaking think…