USL 05 LED Luminaire — Sight Glass & Flow Indicator Light
USL 05 LED luminaire — compact sight-glass light for DN25–DN80, IP65, 24V/230V options, 475 lm / 400 lm variants. Download datasheet.
Description
The USL 05 LED luminaire is a compact, glare-free sight-glass light engineered for sight ports and flow indicators. It supports DN25–DN80 mounting ranges with hinged bracket, slotted-nut or flange-adapter options. Two electrical variants are available for flexible system integration.
Top benefits
- Versatile mounting: fits circular sight glass fittings (DIN 28120 / DIN 28121) and screw fittings (DIN 11851) — adapters for DN65/DN80 as needed.
- Two light options: 24 V AC/DC (7.5 W — 475 lm, 6500 K, 40°) or 230 V AC (5.5 W — 400 lm, 4000 K, 25°). Use the variant that best matches your process.
- Plant-rated protection: IP65 when installed correctly — robust for washdown/process environments.
- Serviceable: hinged bracket mounting and removable screwed lens provide fast access for maintenance.
Quick technical specs
| Parameter | Value / notes |
|---|---|
| Product | Lumistar USL 05 LED luminaire |
| Mounting |
|
| 24 V variant | 24 V AC/DC — 7.5 W; Colour temperature: 6500 K; Luminous flux ≈ 475 lm; Beam angle 40°; Example part no.: 3541.831.00. |
| 230 V variant | 230 V AC — 5.5 W; Colour temperature: 4000 K; Luminous flux ≈ 400 lm; Beam angle 25°; Example part no.: 3540.047.00. |
| Materials & weight | Body: corrosion-resistant cast aluminium GK-ALSi10Mg; Mounting parts: stainless steel; Weight ≈ 0.8 kg. |
| Protection | IP65 per EN 60529 (dust-tight & water-jet). Max ambient temperature: 50°C (non-Ex versions) — confirm in datasheet for Ex variants. |
| Accessories |
|
| Safety note | Never use the luminaire as a vessel closure. It is not a substitute for the sight-glass flange. Ex models must be installed by qualified personnel — follow local regulations and the product datasheet. |
Download USL 05 LED datasheet (PDF)
Request quote / CAD
Typical applications
- Illuminating sight-glass ports and flow indicators on tanks, mixers and pipelines.
- Food & beverage lines, laboratory process vessels and visual inspection ports.
Installation highlights
- Attach luminaire to mating flange with hinged bracket for circular fittings. For screw fittings, mount to a slotted nut or use a flange adapter.
- Do not power up until mechanical installation and seals are confirmed. Disconnect power before service.
FAQ (short)
- Q: Which nominal sizes does USL 05 fit?
- A: DN25 (DIN28120), DN40 (DIN28121), flow indicators from DN25; for screw-type fittings use adapter for DN65/DN80 as specified.
- Q: What protection rating and ambient temp?
- A: IP65 — suitable for washdown environments; max admissible ambient temperature typically 50°C (check datasheet for variant).
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