The good secretary of Pepperl+Fuchs photoelectric sensor industrial inspection production line

The detection modes of Pepperl+Fuchs photoelectric sensors are divided into the following categories: through-beam type, reflector type, polarized reflector type, direct-reflection type, wide beam type, focus type, fixed area type and adjustable area type. Among them, the direct-reverse type, wide beam type, focusing type, fixed area type and adjustable area type are sometimes classified as "photoelectric proximity detection mode". For fiber optic sensors, it is a proximity detection mode. Ultrasonic sensors have two detection modes: on-beam type and proximity type.

The transmitter and receiver of the through-beam Pepperl+Fuchs photoelectric sensor are mounted opposite each other, and the light of the transmitter is directly aimed at the receiver. When the measured object blocks the beam, the sensor output changes to indicate that the measured object is detected. The detection distance is a very important parameter of the sensor. For through-beam sensors, this parameter refers to the maximum distance between the transmitter and receiver of the sensor. The effective beam refers to the part of all the beams that is emitted. In order to detect objects reliably, this part of the light must be completely blocked. We can compare the effective beam of the through-beam detection mode to connecting the transmitter. In the through-beam photoelectric sensor, when detecting small parts or performing precise positioning, its effective beam may be too large to be reliably detected. In this case, a light slit can be added to the sensor to reduce the size of the effective beam. When using a through-beam sensor to detect small objects, on the one hand, it is necessary to ensure that the size of the effective beam must be smaller than the minimum size of the object to be measured, and at the same time, the lens should retain as large a visible area as possible to ensure a sufficient detection distance. A simple method is to use optical fiber. The light-emitting hole of this optical fiber detection head has a variety of shapes and sizes to suit different objects to be measured.