Lumistar Luminaire USL 15-LED and USL 35-LED, stainless steel

Luminaires (Non-Ex)

Lumistar luminaires USL 15 and USL 35 and UL-  Listed types, stainless steel

Product Picture: Lumistar Luminaire USL 15-LED and USL 35-LED, stainless steel


This sight glass luminaire is designed for universal applications.

Application in chemical, pharmaceutical, biogas and food processing  Industries:

It is ideal for illuminating bioreactors, laboratory mixers and filters as well as the interiors of tanks, agitators, separators, pipelines and other, usually closed, vessels in non-explosive operating environments.

It is ideal for use in combined sight and light ports (single-flange version) or with two separate ports (2-flange version).

Compact design, powerful light output:

Glare-free illumination; suitable for circular sight glass fittings to DIN  28120/DIN 28121 or similar, for screw-type sight glass fittings in compliance with DIN 11851, and for METAGLAS® and BioControl fittings.

Protection class: Dust- and waterjet proof, IP 65 according to EN 60 529 / DIN VDE 0470, Part 1

Voltage type: AC/DC
Operating voltage: 12  V, 24  V, 120  V, 230  V
Wattage: up to 100 W, depending on operating voltage

Transformers: Transformers for 12 V or 24 V secondary voltage can be supplied on request.

Push-button:  Luminaires with a wattage of 50 W and more should only be operated by push-button (not in continuous mode). Should an integrated push-button not be included in the order/ scope of supply, it is essential for an external momentary-contact push-button or a timer to be installed in the power supply line, outside the luminaire! Under no circumstances should the maximum temperatures specified for the luminaire be exceeded.

Mounting Options:
Secure to sightport flange with stainless steel bracket or mount directly to a Sanitary (e.g. Tri-Clamp® ferrule or NA-Connect® ) fitting for sterile  applications.


  • Insensitive to vibration
  • No heat radiation in the light port (cold light)
  • No additional heat which would be undesirable for chemical and/or biological processes
  • Extreme high-contrast lighting


  •  Fit & Forget – Extremely long operating life and reliability
  • Durability – Impact & Vibration resistant
  • No heat radiation from lens -Will not heat product in vessel
  • Low energy consumption – Requires only 15 watts