31-2113 Optoelectronics

Current:	--
Features:	--
Ingress Protection:	--
Termination Style:	Wire Leads - 6" (152.40mm)
Viewing Angle:	--
Wavelength - Peak:	--
Millicandela Rating:	--
Lens Style/Size:	Rectangle with Flat Top, 15.48mm x 11.91mm
Panel Cutout Dimensions:	1.28" x 0.40" (32.51mm x 10.16mm)
Panel Cutout Shape:	Rectangular
Series:	31
Voltage:	125V
Ratings:	AC
Lens Transparency:	--
Lens Color:	Amber
Lamp Color:	--
Type:	Neon
Lead Free Status / RoHS Status:	--
Part Status:	Active

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Panel Indicators, Pilot LightsPanel indicators, also known as pilot lights, are often seen in control and automation systems. These devices act as visual indicators for the presence of an electrical signal and are used to indicate a specific voltage, current, temperature, etc. Additionally, pilot lights may also be used to signify the activation of certain elements or processes within a system.Panel indicators are generally designed to help increase the safety of operating personnel. By providing a visual indication of a system’s status, personnel can determine the appropriate actions to take and plan accordingly. Furthermore, visual indicators may be used to alert maintenance personnel of potential electrical hazards.The working principle of panel indicators, pilot lights can be simply explained as follows: A voltage is applied to the panel indicator, which then activates visible light or sound. Depending on the specific device, this visible light or sound can change in intensity to indicate a stronger signal. Additionally, different panel indicators may also be used to indicate different levels of voltage or current.Typically, panel indicators are low-voltage devices (<60 V) with self contained power sources. These devices are designed for use with 24V and less. Visual indicators may range from neon and LED lamps to beehive-style lights and buzzers.Neon panel indicators consist of a glass cylinder inside which a gas-filled electrode is mounted. When a current is applied to the gas-filled electrode, the electrons accelerate and ions are formed, illuminating the gas-filled cylinder.LED panel indicators are solid-state devices constructed from advanced materials that create light when an electrical current passes through them. LEDs require much lower voltage than neon indicators and consume far less power. Furthermore, LEDs have a much longer life expectancy than their traditional neon counterparts.Beehive-style lights are another type of panel indicator. They generally consist of a wire-wound helix with a thin-film coating, usually of glass. When a current is applied to the panel indicator, electrons accelerate, causing electrons to pass through the film, which illuminates the wire-wound helix. The intensity of the light emitted increases with the amount of current applied.Buzzers are another type of visual indicator often found in control and automation systems. Buzzers work by creating an oscillating electrical current that produces sound waves in a frequency range above and below human hearing. The magnitude of the current determines the pitch and intensity of the sound produced.In conclusion, panel indicators, also known as pilot lights, are commonly used in industrial control systems to visually indicate the presence or absence of an electrical signal. No matter what type of panel indicator is used, it is important to recognize that these devices are designed to aid in enhancing safety by providing an easy to interpret visual signal. By taking advantage of the benefits that panel indicators provide, personnel can better determine the appropriate actions to take in order to prevent electrical hazards or accidental injuries.

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