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Series MSL-100 Sight Light UL 1571 Listed

The UL-1571 Listed Series MSL-100 mini sight light provides high intensity illumination for sight glasses and sight flow indicators. Manufactured in the USA from stainless steel and with gasketed joints, these fixtures are ideally suited for corrosive environments and sanitary applications found in the dairy, food, and pharmaceutical industries. Rated for 120 volts and 100 watts makes wiring simple and straightforward. Fixture is optionally available rated for 24 volts and 20, 50 or 100 watts.

Illumination Choices:

The Series MSL uses a powerful 120 Volt 100 Watt Tungsten Halogen bulb that has been matched with a conical reflector to provide maximum light output.  The Series MSL HI-LED uses a high intensity light engine designed to replace halogen technology.

NEW HI-LED Lighting Series:

The new HI-LED Lighting Series is a high intensity light engine designed to replace halogen technology. The HI-LED is not a standard LED bulb. Custom designed, it offers more robust technology than halogen bulbs. Unlike Halogen bulbs, HI-LED lamps have no filament and are not affected by vibration, impact, heat, dust, or surface oils. Since they do not generate heat, which causes halogen bulbs to burn out prematurely, they may be left on continuously without over heating the fixture housing. The HI-LED provides a bright white light and emits as much or more light intensity (candle power and lumens) as a 100 watt halogen bulb. HI-LED technology offers 40,000 - 45,000 hour lamp life for continuous duty (almost 5 years) versus 1,000 - 2,000 lamp life for halogen. HI-LED lighting is available for both non-hazardous and explosion-proof light fixtures.  

High Intensity LED Light Engine Features:
  • Extended lamp life reduces operating costs
  • 35,000 – 40,000 hour lamp life vs. 1000 – 2000 hours for halogen
  • Robust Technology – vibration, heat, dust, and surface oil resistant
  • Ideal for use with video camera monitoring systems
  • No Excessive Heat
  • Continuous operation
  • No heat transmission into sight glass or vessel
  • Less heat generation than a 100 watt halogen bulb

Custom Designed, Energy Efficient, Compact Hi-LED™ LED Array Meets LM80 Energy Star Standards

Hi-LED Series lighting is not an “off-the-shelf” LED bulb.  It was custom designed to include features that save energy, provide uniform light, and extend the life of the lamp to reduce overall operating costs. The heart of the unit, the LED array, has been LM80 tested and is approved for the Energy Star program. State-of-the-art optics control the light in a specific uniform pattern, eliminating the hot spots and yellow tint that halogen bulbs produce.

  • Twice the light at 1/3 the wattage of other LED fixtures
  • 22% more light intensity than a 100 watt halogen bulb
  • 93% less energy than a standard 100 watt halogen bulb
  • Lasts 98% longer than a standard 100 watt halogen bulb
  • LED array LM80 tested to Energy Star standards
  • Custom optics provide bright, white, high intensity, uniform light with no hot spots or yellow tint bulb


Click For More DetailsHigh Intensity LED Light Engine Features:
  • Introducing our new line of High Intensity LED [HI-LED]. This stateof-the-art technology is the solution for all your plant's process lighting applications. HI-LED technology means the end of frequent halogen lamp replacements. HI-LED fixtures do not overheat and will last for years without re-lamping. Each HI-LED Fixture can save your plant several thousands of dollars over its lifetime while at the same time demonstrating your company's commitment to the Environment!
  • The HI-LED produces 22% MORE LIGHT
    INTENSITY [i.e. Candle Power/LUX/Lumens] than a standard 100 Watt Halogen lamp.
  • The HI-LED operates on 93% LESS ELECTRICITY than a 100 Watt Halogen Lamp. An average yearly savings of 812 Kilowatts per year.
  • The HI-LED provides users with approximately 35,000 ~ 40,000 hours of life [approx. 4 years] vs. 1,000
    Lamp life for halogen. [Results in significant savings when calculating the labor and bulb cost of frequent halogen lamp changes].
  • The HI-LED does not generate the excessive heat that a 100 Watt halogen lamp does. The HI-LED technology runs cool and can operate continuously without overheating the electronics and burning out the lamp. Also, HI-LED Fixtures do not transmit heat into sight glass or vessel which might a negative effect on some applications.
  • The HI-LED fixtures are not affected by vibration or [reasonable] impacts because there is no filament! HI-LED are also resistant to heat, dust, and surface oils.
  • The HI-LED fixtures emit a bright white light [high color temp]. Unlike with Halogen Lamps there no 'yellow' tint. They also have an even beam spread with no "dull" spots.


Click For More DetailsMaterials of Construction & Cleanliness
Housing Material: Type 304 Stainless Steel
Switch Cap: Buna-N
Lens: Annealed Borosilicate Pyrex
Cushion: Klinger Sil C-4401 Compressed Non Asbestos
Bracket & Set Screw: Type 304 Stainless Steel
Cable Gland: Zinc Plated Brass


The Series MSL Sightglass light has been specifically designed for use in the clean areas of Pharmacutical and Food & Dairy industries.   Manufactured in all Stainless Steel with fully gasketed joints and completely machined external surfaces, the water tight and dust tight Series MSL is ideal for frequent wash downs.   For cleanliness, the MSL's has no fins, threads or other such areas to collect dust, dirt, and or bacteria that present risks to batch integrity and make cleaning the unit more difficult.

Also, the Series MSL's clean, compact, all stainless steel design compliments any vessel's aesthetics and there is no need for an external power supply or transformer.


MSL Light Catalog MSL Light Catalog (756 KB)