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White Paper

How to Spec Lighting for Sight Glass Applications


Select optimum lighting to clearly view important stages of your process

Proper lighting is essential for effective process observation through sight glasses. Without adequate illumination, operators struggle to detect fluid levels or view critical process stages. Flashlights often cause glare and may not fit within small viewports, making dedicated sight glass lighting a necessity.

This white paper, How to Spec Lighting for Sight Glass Applications, covers:

  • Key considerations for selecting the right sight glass lighting, including wattage, voltage, and mounting configurations
  • A breakdown of different lighting technologies, including halogen, fiber optic, and LED solutions
  • Insights into light measurement (lumens, foot-candles, lux) and how they impact visibility
  • Strategies for minimizing heat output while maximizing brightness efficiency.

By reading this guide, you will:

  • Understand how to choose the best lighting solution for your process environment
  • Learn how voltage, reflector design, and light positioning affect illumination quality
  • Discover energy-efficient lighting options that reduce heat and maintenance costs.

Download the white paper today to optimize your sight glass lighting and improve process visibility.

LJ Star Incorporated (www.ljstar.com) provides an extensive line of process optimization equipment – sight glasses, lights, sanitary fittings, cameras and level gage instrumentation. Product lines include METAGLAS® Safety Windows, Lumiglas® Explosion Proof Lights and Cameras, the MetaClamp® Sanitary Sight Window, Visual Flow Indicators, Sight Ports, Sanitary Clamps, Magnetic Level Gages and Gage Glass. METAGLAS® is the #1 selling fused sight glass, proven in thousands of installations around the world. Unlike some other sight glasses, it meets stringent DIN 7079 and DIN 7080 quality standards, and it is approved for USP Type I use.

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© LJ Star Incorporated All rights reserved. METAGLAS® and METACLAMP® are registered trademarks of Herberts Industrieglas; Lumiglas® and LumiStar® are registered trademarks of F.H. Papenmeier GmbH & Co. KG; LumiFlo® and MetaPlex® are registered trademarks of LJ Star Incorporated.