Product information
Sight glass lamps are specially designed lights for process observation in closed containers such as tanks, reactors, boilers, stirrers, or pipelines. They combine high optical clarity with targeted, powerful lighting and enable employees to visually monitor processes such as fermentation, filtration, or cleaning safely and efficiently.
The lights are available for both Ex areas in explosion hazard zones and non-Ex areas. They are preferably offered in modern LED technology and are available in robust housings made of stainless steel or aluminum. Half-moon lights are particularly suitable for combined light and sight solutions and can be combined with a sight glass wiper of type SGW if needed to ensure a consistently clear view.
For hygiene-critical applications in the food or biotechnology sector, such as in dairies or in the organic industry, special lights for screw sight glasses of type 327 are available that integrate seamlessly into DIN 11851 fittings. Furthermore, there are universally usable snap-on and foldable lights designed for round sight glass fittings according to DIN 28120 or comparable standards.
Depending on the model, sight glass lamps provide a light output of up to 2,300 lumens, corresponding to LED equivalents of 10 to 100 watts halogen output. The operating voltage can be selected between 24 volts DC or AC and 230 volts AC, allowing for flexible integration into existing systems. The maximum ambient temperatures are around 50 °C, with the specific temperature resistance depending on the respective sight glass design. The degrees of protection extend up to IP68, thus offering the highest protection against dust and moisture.
The housings are made of corrosion-resistant aluminum or stainless steel castings, electropolished or made from deep-drawn stainless steel sheets, to meet the demands of aggressive environments and hygienic processes. Sight glass lamps are primarily used in the chemicals, pharmaceuticals, and food industries, but also in biogas and environmental systems as well as in oil and gas production. They are suitable for continuous operation and can also be equipped with time-controlled lighting, push-button control, or integrated wipers to ensure a continuous clear view of the process.
