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Photoelectric Sensor

A photoelectric sensor is a device that converts optical signals into electrical signals, wiy used in industrial automation, environmental monitoring, smart devices,  other fields.

1. Operating Principle  Classification

Photoelectric Effect: Signal conversion is achieved based on the external photoelectric effect (e.g., phototubes), internal photoelectric effect (e.g., photoresistors),  photovoltaic effect (e.g., photoelectric cells).
Operating Modes:

.Through-beam: Triggered by interrupting the light path within the slot, with a short detection range (a few centimeters).
.Retro-reflective: The emitter  receiver are positioned on opposite sides, enabling detection distances of up to several tens of meters.
.Diffuse-reflective: Relies on light reflected from the object, suitable for non-contact detection.

2. Technical Features  Advantages

.Non-contact Detection: Eliminates mechanical wear, ideal for high-speed or precision applications.
.High Precision  Response Speed: For example, photoelectric tachometers offer high resolution  strong anti-interference capability.
.Modular Design: Some products support fiber-optic housing, adapting to the detection of minute objects.
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