QS81XXO24

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Panel Indicators, Pilot Lights are signal lighting devices used to alert personnel of important changes or events in the systems that they are monitoring. QS81XXO24 is one such device that serves this purpose, typically used to signal switching status, and process control notifications. It is distinguished from other Panel Indicators, Pilot Lights due to its 24VDC power rating, varied brightness, highly visible illuminance and long-life LED technology.

QS81XXO24 is typically used in high-load applications, such as industrial control and automation, HVAC, material handling, and process control systems. It is wired in DC voltage and designed to work with an appropriate power supply. It features a highly visible symbol indicator that illuminates when the current supplied to it is switched on. It is then used by personnel to quickly and accurately assess the status of a process or system.

The QS81XXO24 panel indicator works on the principles of cathode and anode polarization. When current flows through the indicator’s contacts, the anode becomes positively charged and becomes the source of light. The electrons in the LED diode are then attracted to the positively charged anode, and the diode becomes charged with electrons. This charge creates a current in the diode, which produces light.

Since the current is low, a resistor must be wired in series with the indicator’s contacts in order to maintain a suitable current range. This resistor also serves to protect the LED diode from over-voltage situations. The size of the resistor must correspond to the wattage of the diode, which is determined by the amount of current desired.

The luminance of the diode is dependent upon the voltage, current and wattage of the LED diode. It is adjustable using an external potentiometer. The QS81XXO24 offers a range of up to 600 cd/m² in terms of light intensity and a wide viewing angle that can range from 110° to 150°. The intensity is adjustable to personal preference or system requirement. It also features a steady light output with no strobing or flicker, helping maintain the signal\'s visibility and interpretation accuracy.

QS81XXO24 offers a long life and reliable operation in harsh industrial environments. It complies with all relevant safety and EMC regulations and can usually withstand operations temperatures from -25°C to 70°C in accordance with EN 60068-2-1. The wide temperature range, high reliability, and long service life of the LED make for a cost-effective and efficient Panel Indicator, Pilot Light.

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