5219056

Panel Indicators and Pilot Lights

5219056 application field and working principle are common parts of panel indicators and pilot lights. Panel Indicators and Pilot lights are widely used in industry-specific functions. The functions of these indicators are used in electrical, electronic, chemical, petrochemical, and many other fields.

Panel Indicators

A panel indicator is a device designed to provide visual indication in an control panel, or panel board. This device is typically illuminated either by electricity or by light sources such as LEDs. They are often used for the main purposes of indicating the control functions and warning. Panel indicators can be in a variety of different forms, including colored lights, symbols, fluorescent displays, or incandescent bulbs.

When it comes to working principle, panel indicators use a few basic techniques. The first is the principle of electric excitation, which is when a voltage is applied to the indicator, which causes the light to be visible. The other principles include photoresistive panels, which use photocell and phototransistors that produce a reaction when exposed to light, or thermal panels, which use a heating element to generate light.

Pilot Lights

Pilot lights are a type of panel indicator used to indicate the status of a process. Specifically, they’re usually used to indicate whether a process is on or off, or if there’s a problem in the system. Pilot lights may use physical moving elements such as one-directional valves, magnetic switches, and detection points. Electrical pilot lines are less common and less expensive, but magnets, reed switches, relays, capacitors, or semiconductor lasers can also be used.

In terms of working principle, pilot lights usually work through electric excitation. An electrical signal is used to indicate a status point, which is visible to the pilot light. The pilot light will either turn on or off depending on the situation, as well as the switching signals coming from the system. The electrical signals can also be used to indicate a warning point for different system functions.