Lumistar Luminaire USL 07 LED

Luminaires (Non-Ex)

Product Picture: Lumistar Luminaire USL 07 LED

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

Glare-free illumination; fits circular sight glass fittings to DIN 28120/DIN 28121 or similar, screw-type sight glass fittings in compliance with DIN 11851, as well as visual flow indicator fittings.


For illuminating the interiors of vessels, tanks, agitators, silos and other generally closed containers and reactors and also in visual flow indicators.

Suitable for use in the food processing industry.

Protection class: 

Dust-tight and water jet-proofIP 65 and IP 67 acc. to DIN EN 60529/DIN VDE 0470, part 1

Lumistar luminaires USL 07 LED are approved for use  in  ambient temperatures of up to 60°C.

• Voltage type:
AC/DC, depending on type of luminaire.

• Operating voltage:
24 V AC/DC – 14 W
120-230 V AC – 14 W

Straightforward installation using special attachment:

The luminaire is mounted with the lamp attachment on the cover flange in the case of circular sight glass fittings and visual flow indicators. With screw-type sight glass fittings, the luminaire is fastened to the slotted nut.

Please note that the halogen bulb 230 V – 75 Watt is no longer available.

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Lumistar Luminaire ESL 27, stainless steel

Luminaires (Non-Ex)

Product Picture: Lumistar Luminaire ESL 27, stainless steel

Fully Sealed Lumistar Sight Glass Luminaire with cover glass, all stainless steel

For mounting onto sight glass fittings

The product is a universally applicable sight glass luminaire ideally suited for use on combined sight/light glass units (single flanged port arrangement) as well as for separate flanged ports.

Compact, high light output:

Dazzle free illumination; suits circular sight glass fittings to DIN 28120/DIN 28121 or similar as well as screwed sight glass assemblies similar to DIN 11851 and flow indicators. Sizes, depending on style, from DN 50 upward.

Large light aperture thanks to screwed lens ring design

Applications: suitable for pharmaceutical and food industries and especially for sterile areas!

For the illumination of flow indicators, pipelines, laboratory mixers, bioreactors as well as internals of tanks, pressure vessels stirred reactors and otherwise normally closed containers.

• Ex version also available
• Protection: Dust and water jet tight, IP65 to EN 60529/DIN VDE 0470 part 1

Suits Lumiglas Sight Glass Fitting, circular DIN 28120/28121 or similar from size DN 50 and Lumiglas Screwed Sight Glass Fitting MV from DN 100 to DN 150

Operating voltage: 12V, 24V, 120V, 230V, 240V Power, dependant on operating voltage, up to 100W  

Secured by hinged bracket or adapter flange

Modyfied by an inside mounting flange specially for Aseptik Technology

Please note that the halogen bulb 230 V – 75 Watt is no longer available.

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Lumiglas Sight Glass Wiper SW I

product photo: Lumiglas Sight Glass Wiper SW I

Simple effective assembly for wiping clean circular sight glass discs
Maximum pressure 6 bar

Vacuum tight; pressure tight to at least 2 bar and, depending on glass diameter, to 6 bar. Max. permissible temperature 220°C (though this depends on glass type used).

Combine with circular sight/light fittings

All contact parts stainless steel, Hastelloy on request

Possible combinations:

  • Unit can simultaneously be combined with a spray device.
  • Combination with Lumistar luminaire mounted on the sight glass unit is possible from viewing dia. 125 (DIN 28120, DN 100)
    depending on luminaire size (see data sheet download below).
  • Lumistar luminaire series USL and ESL can also be combined with the unit.
  • With screwed sight glass assemblies combination with Lumistar luminaire SLM or Lumistar ME is possible with size DN 125.
  • Also available with ratchet-drive lever.


  • For manual cleaning on inside glass surface
  • 316 stainless steel wetted metal parts
  • Vacuum tight and up to 85 psig  (pound-force per square inch gauge) @  (220°C)
  • Wiper blade available in Teflon or Silicone
  • Sizes: 80 to 225 mm OD (other sizes available)

Manual wiper for Lumiglas® sight glasses and sight windows. It may be used in combination with a with a spray ring or spray nozzle. Sight glass must be ordered with bore hole.


Lumiglas Tubular Sight Glass/Flow Indicator

Flanged at both ends DIN 2642 mating sizes PN 10 for fitting into pipelines

Length over flange: DIN 3202 F1

For visual control of state of fluid and flow in pipelines

Sizes from DN10 to DN200, also available with ANSI flanges
Stainless steel 1.4571(316Ti) flanges or other on request
Metal-(1.4301) or Plexi-glass outer shell for extra protection on request

Operating conditions:
Operating pressure: up to 6 bar, depending on wall thickness (higher ratings on request)

Operating temperature: up to 220°C

Materials of components referred to in adjoining exploded view (within data  sheet below):
Item Part Material
1 Connecting flange Stainless steel 1.4571 or other
2 Glass cylinder Borosilicate glass (DURAN)
3 Ring seals Silicon rubber or other
4 Spacer bars Stainless steel 1.4301 or other
5 Securing bolts A 2 or other
(with spring washer)

Special versions:
– with stainless steel or protective Plexiglas outer shell
– ANSI flanges
– customized length

– The flow indicator is bolted, using suitable gaskets, directly between the mating flanges of the pipeline.
– The flow indicator should be fitted so that no stresses (tensile, compression or torsional) are caused on tightening up.

Ordering information:
e. g. Lumiglas tubular sightglass/flow indicator DN 100, material 1.4571, borosilicate glass, 6 bar operating pressure,
length over flanges 350

product photo: Lumiglas Tubular Sight Glass/Flow Indicator