Lumistar USL 07 LED-Ex — Explosion-Proof Sight-Glass Luminaire
Lumistar USL 07 LED-Ex explosion-proof sight-glass luminaire. IP65/67, Ex db/eb IIC T6 & Ex tb IIIC T80°C, 1150 lm, 11°/26°, 24V/120-230V. Datasheet.
Description
Lumistar USL 07 LED-Ex — Explosion-Proof Sight-Glass Luminaire
The Lumistar USL 07 LED-Ex is an ATEX/IECEx style explosion-proof luminaire designed for mounting on sight-glass fittings and flow-through sight glasses.
It combines high light output with a compact body, robust protection (IP65 / IP67), and certified Ex protection for use in potentially explosive atmospheres.
Key highlights
- Certified explosion protection — catalog markings: Ex db eb IIC T6 Gb and Ex tb IIIC T80°C Db.
- High luminous output — ~1150 lm per lamp (typical), high efficiency LED light source.
- Two beam options — narrow 11° beam or wider 26° beam for even illumination.
- Dual voltage variants — 24 VAC/DC (14 W) and 120–230 VAC (14 W) options available.
- Robust ingress protection — IP65 / IP67; ambient operating temperature up to +60 °C.
- Designed for sight glass fittings — fits DIN 28120 / DIN 28121 and screw sight glass fittings similar to DIN 11851 (ranges noted below).
Technical specifications
| Parameter | Value / Notes |
|---|---|
| Product | Lumistar USL 07 LED-Ex sight-glass luminaire |
| Explosion rating | “Ex db eb IIC T6 Gb” and “Ex tb IIIC T80°C Db” |
| Ingress protection | IP65 & IP67 (EN 60529/DIN VDE 0470 PART 1) |
| Ambient temperature | −20 °C to +60 °C (operating) |
| Light source | LED, 14 W (typical) |
| Luminous flux | ~1150 lm (typical) |
| Color temperature | ~5700 K (daylight) |
| Beam angles | 11° (narrow) or 26° (wide) |
| Voltage | 24 VAC/DC (14 W) 120–230 VAC (14 W) |
| Cable/connection | Connection box; cable diameter 8–15 mm; custom cable lengths available |
| Weight | ≈ 3.9 kg |
| Mounting suitability | Round sight glass fittings per DIN 28120 (from DN50), DIN 28121 (from DN80), flow-through sight glasses (from DN50), screw sight glasses similar to DIN 11851 (DN100/125 via insert flange; DN≥150 via mounting flange) |
Note: The table above summarizes catalog data. Please request the full datasheet.
Mounting & installation
The USL 07 mounts directly to sight-glass fittings. For round sight glasses (DIN 28120 / DIN 28121) the lamp fits starting at the sizes shown above.
Alternatively, the luminaire secures to the counter-flange for flow-through sight glasses. Use the supplied mounting wrench to open the luminaire safely during service.
Accessories & spare parts
- Mounting straight (DN50–DN100).
- Angle mounting (DN125–DN200) .
- Mounting wrench for screw the glass opening.
Applications
How to order — provide the luminaire variant (voltage & beam angle), sight-glass diameter (DN), flange standard and any required certificates. For fastest processing, upload DWG/STEP or photos via Request Quote — Upload DWG/STEP.
Request quote
Download lumistar-usl07-led-ex-datasheet
Frequently asked questions (FAQ)
- Q: Which flange sizes does the USL 07 fit?
- A: It fits DIN 28120 from DN50, DIN 28121 from DN80, and flow-through fittings from DN50. Screw-on fittings similar to DIN 11851 are supported (DN100/125 via insert flange; DN≥150 via mounting flange).
- Q: What are the Ex ratings?
- A: The catalog lists explosion marks such as Ex db eb IIC T6 Gb and Ex tb IIIC T80°C Db.
- Q: Can the luminaire be used on pressurized or vacuum equipment?
- A: Yes. The luminaire is suitable for mounting on sight-glass fittings irrespective of container pressure or vacuum, provided installation follows the certificate and flange manufacturer’s guidance.
