Lumistar Luminaire ESL 55-LED, stainless steel

Luminaires (Non-Ex)

Product Picture: Lumistar Luminaire ESL 55-LED, stainless steel

Lumistar Luminaires ASL 55-LED (aluminium) and ESL 55-LED (stainless steel)

Sight glass luminaire for universal applications; ideally suited for sight glass and light port combinations (single-flange version) and for separate  configurations (double-flange version).


The optimum solution in the pharmaceutical and food processing industries, ideal for illuminating bioreactors, laboratory mixers and filters as well as the interiors of boilers, tanks, agitators, separators, pipes and other – usually sealed – vessels in operating environments that are not potentially explosive.

The specific advantages of Lumiglas LED technology:

  • Insensitive to vibration
  • Long service life and high operational reliability
  • Continuous operation for LED up to about 50,000 hours
  • The ideal solution wherever fittings are difficult to access
  • 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

Compact yet powerful:

Dazzle-free illumination; suitable for use with circular sight glass fittings to DIN28120/DIN28121 or similar, with screw-type sight glass fittings in compliance with DIN 11851, and in sight flow indicators.

Type of protection: Dust-tight and waterjet-proof, IP 65 acc. to EN 60529/
DIN VDE 0470, Part 1

Electrical data:

Convenient electrical link-up: The Lumistar luminaire is equipped with a factory-mounted screwed cable gland.

The Lumistar luminaire ASL-/ESL 55-LED is compatible with the following nominal diameters:
a) Circular sight glass fitting acc. to DIN 28120: DN 40
b) Circular sight glass fitting acc. to DIN 38121: DN 40
c) Sight glasses in flow indicators: DN 50
d) Screw-type sight glass fittings similar to DIN 11851:
DN 50 is mounted by way of a separate flange attachment
– From DN 80 up, the unit is secured using the hinged bracket


Lumistar Luminaire ASL 57LED-Ex, aluminium

Luminaires (Ex)

Product Picture: Lumistar Luminaire ASL 57LED-Ex, aluminium

ex II 2G Ex d(e) IIC T6 Gb
ex II 2D Ex tb IIIC T80°C Db

Suitable for Explosion hazardous areas

This Ex-type sight glass luminaire is designed for universal applications and is ideal for use in combined sight and light ports (single-flange version) or with two separate ports (2-flange version).

For illuminating visual flow indicators, pipelines, laboratory mixers, bio-reactors as well as the interior of tanks, hoppers, silos, agitators and other, normally closed, vessels and reactors in potentially explosive environments.

The specific advantages of Lumiglas LED technology:

  • vibration-resistant
  • long service life and operational reliability
  • LED functions up to around 50,000 hours in continuous operations
  • optimal for fittings that are difficult to access
  • no heat radiation in the light aperture (cold light)
  • no unwanted additional heat in chemical and/or biological processes
  • extremely high-contrast illumination

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, from size DN 40 and for sight glass fittings on flow indicators from DN 65 .

Protection class: IP 65

Temperature Class: to T6
Ambient temperature: up to 40°C

High operating time by Hi-Power LED’s

Voltage type: AC/DC

Operating Voltage 24 V, 120 V-230 V
Power 11 W

Secured by hinged bracket or adapter flange