Which sensor is used in a sorting module to detect metal parts?

Inductive sensors are specifically designed to detect metallic objects and are widely used in industrial applications, including sorting modules. They operate by generating an electromagnetic field around the sensor. When a metal object enters this field, it disrupts the field, allowing the sensor to detect the presence and position of the metal part. This characteristic makes inductive sensors particularly effective for applications where identifying the presence of metal is crucial.

Capacitive sensors are more suited for detecting non-metallic materials, such as plastics or liquids, by measuring changes in capacitance caused by the proximity of the target object. Photoelectric sensors use light beams to sense the presence of objects, which can include metallic parts, but they are generally more versatile and can detect a variety of materials, not limited to metals. Pneumatic systems are not sensors; instead, they relate to the use of compressed air to perform work and are not involved in detecting materials.

Therefore, when it comes to sensing metal parts specifically, inductive sensors are the preferred choice due to their specialized design and operational principles.