Technician installing USL 06 LED-Ex on DIN 28120 sight glass
USL 06 LED-Ex luminaire mounted on sight glass
Lumistar USL 06 LED-Ex front view stainless steel

USL 06 LED-Ex Luminaire — Explosion-Proof Sight Glass Light

USL 06 LED-Ex luminaire — explosion-proof sight-glass lighting, IP65/IP67, EU Ex certificate (BVS 08 ATEX E 135). Low-heat LED, long life, fits DIN sight glasses.

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Description

The USL 06 LED-Ex luminaire is an ATEX/IECEx certified sight-glass luminaire for hazardous areas. It gives glare-free, cold LED illumination for sight ports, flow indicators, reactors and closed vessels. The unit is IP65/IP67 rated and approved for gas Zones 1/2 and dust Zones 21/22.

Key benefits

  • Certified for hazardous areas: EU Type-Examination certificate BVS 08 ATEX E 135 — II 2G Ex db IIC T6 / T4 Gb & II 2D Ex tb IIIC T85°C / 130°C Db.
  • Low heat LED technology: long life, low energy, and minimal process heating — ideal for thermally sensitive processes.
  • Versatile mounting: fits circular sight glass fittings to DIN 28120 / DIN 28121, screw-type DIN 11851 fittings, and flow indicators.
  • Robust protection: IP65 / IP67 to DIN EN 60529 for dust and water resistance.
  • Wide ambient range: approved for −20°C up to +50°C (model dependent).

Technical specifications (summary)

USL 06 LED-Ex luminaire — Key specifications
Parameter Value / Notes
Product USL 06 LED-Ex luminaire (Lumistar)
Certification EU Type-Examination Certificate: BVS 08 ATEX E 135. Ex ratings as per model datasheet — confirm with datasheet for exact code/zone specifics.
Protection IP65 & IP67 (DIN EN 60529)
Ambient Typical operating: −20°C to +50°C (confirm exact range per variant in datasheet).
Mounting Compatible with common sight-glass standards:

  • DIN 28120 / DIN 28121 (circular fittings)
  • DIN 11851 (screw-type) — slotted nut or adapter collars
  • Flow indicator mounting (adapter options available). Hinged bracket or slotted-nut options.
LED benefit
  • Lower power consumption vs. traditional lamps
  • Longer operational lifetime (reduced maintenance)
  • Adaptable colour temperature options
  • Minimal heat output — safer for close-mount applications
Cable/connection Factory-fitted cable or gland options available — check model datasheet for standard lengths and cable-gland specifications (e.g. M20x1.5).

Download: USL 06 LED-Ex datasheet (PDF)
Request quote / CAD

Typical applications

  • Illumination of sight glass ports and flow indicators in hazardous atmospheres
  • Boilers, tanks, silos, agitators, and reactors
  • Vehicle luminaires and process inspection ports where Ex approval is required

Installation & safety notes

  • Follow the EU Type-Examination certificate and local Ex installation rules.
  • Do not use the luminaire as a substitute for a sight glass flange or counter-flange. It must not close a vessel port alone.
  • Disconnect power before servicing. Do not look directly into the light source — risk of eye damage.

FAQ

Q: Which zones is USL 06 approved for?
A: Certified for gas Zones 1 & 2 and dust Zones 21 & 22 per the datasheet.
Q: What protection rating does it have?
A: IP65 and IP67 (DIN EN 60529).
Q: Can the LED colour be changed?
A: Datasheet notes flexible light colour options — specify at order.

© Lumistar.

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