USL15 / USL35 LED – High-Performance LED Illumination for Non-Ex & Sterile Environments

The USL15 LED and USL35 LED luminaires deliver bright, reliable illumination for bioreactors, laboratory mixers, filtration systems, tanks, agitators, separators, pipelines, and other closed vessels operating in non-explosive environments. Their compact design and powerful light output make them ideal for precision monitoring across chemical, pharmaceutical, biogas, and food-processing industries.

Both variants are engineered for installation on sight glass fittings, offering excellent visibility without introducing heat into sensitive biological or chemical processes.

Two Purpose-Designed Variants

• USL15-LED – Universal model supplied with a hinged bracket for flexible mounting.
• USL35-LED – Sterile-environment version with an adapter collar designed for fitting directly over flanges and hygienic interfaces.

Key Features

• Optimised for mounting on sight glass fittings
• Compact design with powerful, high-contrast LED output
• Suitable for chemical, pharmaceutical, biogas and food industry applications
• Dust- and waterjet-proof: IP65 (EN 60529 / DIN VDE 0470 Part 1)
• Cold-light LED technology — no heat radiation into the vessel
• Highly vibration-resistant for use on mixers, agitators and rotating machinery
• Fast, simple installation using dedicated mounting hardware

Environmental Specifications

• Maximum ambient temperature at cable entry: 40°C
• Ideal for hygienic and sanitary environments requiring smooth, cleanable surfaces

Ideal Applications

• Bioreactors and fermentation systems
• Laboratory mixers and filter assemblies
• Tanks, hoppers, silos and closed vessels
• Agitators, separators and process reactors
• Pipelines and visual flow indicators
• Food, beverage, chemical and pharmaceutical process lines

The USL15/35 LED range offers the perfect balance of compact engineering, hygienic design, and powerful lighting performance—making it the go-to solution for non-Ex and sterile process illumination across modern industrial sectors.

Technical Specifications: