Our Products
USL 05 LED Explosion-Proof Sight Glass Light
The USL 05 LED Explosion-Proof Sight Glass Light is a compact ATEX-certified LED luminaire designed for illuminating sight glasses, reactors, tanks, and pipelines in hazardous environments. Its lightweight aluminum housing, high-efficiency LED technology, and reliable explosion protection make it ideal for demanding industrial process applications.
Non binding • Usually a response within 24 hours
Technical data
USL 05 LED Explosion-Proof Sight Glass Light Overview
The USL 05 LED Explosion-Proof Sight Glass Light is a compact industrial luminaire developed for reliable illumination of process vessels operating in hazardous locations. Designed specifically for sight glass fittings, flow indicators, and observation ports, it delivers bright, uniform LED illumination while maintaining the highest explosion protection standards.
Manufactured with a corrosion-resistant die-cast aluminum housing and precision optical glass, the USL 05 LED Ex combines lightweight construction with excellent mechanical strength. The integrated LED module provides high luminous efficiency, low energy consumption, and minimal heat generation, making it suitable for continuous operation in chemical, pharmaceutical, food processing, and petrochemical industries.
Certified for Gas Zone 1 & 2 and Dust Zone 21 & 22, the luminaire is available in multiple voltage configurations and can be mounted using a hinged bracket or adapter flange. It is compatible with DIN 28120, DIN 28121, and similar circular sight glass fittings from DN40 upward.
USL 05 LED Explosion-Proof Sight Glass Light — Technical Data
| Specification | Details |
|---|---|
| Product Name | USL 05 LED Explosion-Proof Sight Glass Light |
| Light Source | High-Efficiency LED |
| Housing Material | Die-Cast Aluminum Alloy |
| Lens Material | Borosilicate Glass |
| Explosion Protection | Ex II 2G Ex db IIC T6 Gb / Ex II 2D Ex tb IIIC T80°C Db |
| Hazardous Area | Gas Zone 1 & 2 / Dust Zone 21 & 22 |
| Protection Rating | IP65 / IP67 |
| Operating Voltage | 24V AC/DC, 110–230V AC |
| Rated Power | 7.5 W |
| LED Lifetime | Up to 50,000 hours |
| Ambient Temperature | -20°C to +60°C |
| Mounting | Hinged Bracket / Adapter Flange |
| Compatible Fittings | DIN 28120, DIN 28121, MV Sight Glass Fittings (DN40+) |
Dimensions and electrical data for Lumistar luminaire USL05LED-Ex:
Connecting data: Temperature classification and electrical parameters
| Item | USL 05LED-Ex | Variant with 2 m connection cable part no. | Variant with cable gland 7-11 mm part no. | Ambient temperature range -20℃ ≤ Tₐ ≤ +50℃ | Ambient temperature range -20℃ ≤ Tₐ ≤ +60℃ | ||
|---|---|---|---|---|---|---|---|
| 1 | 230 V AC – 4 W | 3540.059.00 | – | – | – | 2G T6 | 2D T80℃ |
| 2 | 24 V AC/DC – 7.5 W | 3540.042.00 | 3541.935.00 | 2G T6 | 2D T80℃ | – | – |
| 3 | 110-230 V AC – 7.5 W | 3540.043.00 | 3541.936.00 | 2G T6 | 2D T80℃ | – | – |
KEY FEATURES
ATEX Certified Design
Suitable for hazardous gas (Zone 1/2) and dust (Zone 21/22) environments.
High-Efficiency LED Technology
Long-life LEDs with stable brightness and low energy consumption.
High Protection Rating
IP65/IP67 protection against dust, water, and harsh industrial conditions.
Long Service Life
LED lifespan up to 50,000 hours reduces maintenance frequency.
Industrial Aluminum Housing
Robust construction for vibration and corrosion resistance.
Compatible Mounting System
Designed for DIN 28120 / DIN 28121 sight glass fittings.
TYPICAL APPLICATIONS
- Pressure Vessels
- Chemical Reactors
- Boilers & Steam Systems
- Pipeline Sight Glass Assemblies
- Pharmaceutical Equipment
- Food & Beverage Processing
- Industrial Observation Ports
FAQ
A:The USL 05 LED Ex provides safe and reliable illumination for sight glasses, reactors, tanks, and pipelines operating in hazardous industrial environments.
A:Yes. It is certified for Gas Zone 1 & 2 and Dust Zone 21 & 22, meeting ATEX requirements for explosive atmospheres.
A:Standard models are available in 24V AC/DC and 110–230V AC configurations. Additional versions may be available upon request.
A: It is compatible with DIN 28120, DIN 28121, and DIN 11851 sight glass fittings and similar industrial connections.
A:Yes. Voltage, mounting accessories, cable length, beam angle, and housing options can be customized according to application requirements.
Need Custom USL 05 LED Explosion-Proof Sight Glass Light Solutuions?
Send us your drawings or technical requirements for fast quotation and engineering support.