The pass-through beam device consists of an acceptor located within the line of sight of the transmitter. In this mode, an object is detected when the beam is blocked from the transmitter to the receiver.
A retroreflective device places the transmitter and receiver in the same direction, and uses the reflector to reflect the inverted beam from the transmitter back to the receiver. An object is sensed when the beam is aborted and fails to reach the receiver.
Proximity induction (dispersion) placement is a placement in which the emitted radiation must be reflected away from the object in order to reach the receiver. In this mode, an object is detected when the receiver sees the source of the signal being sent rather than not being able to see it. In the case of retroreflective sensors, for example, the diffuse sensor emitter and receiver are located in the same housing. But the target acts as a reflector, so that the detection reflection of the light moves away from the disturbing object. The emitter emits a beam of light (commonly pulsed infrared, visible red, or laser) that disperses in all directions, filling the detection area. The target then enters the area and deflects part of the beam back to the receiver. When there is enough light on the receiver, detection occurs and the output is turned on or off.
Some photo eyes have two different types of operation, light operation and dark operation. When the receiver "accepts" the emitter signal, the lighting operation becomes operational. When the receiver "does not receive" the transmitter signal, the black-eye manipulation photo becomes operational.
The detection scale of a photoelectric sensor is its "field of view", which is the large interval between the sensor retrieving information minus the small interval. A small detectable object is a small object that can be detected by a sensor. More accurate sensors can often have small detectable objects on a very small scale.
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The cause of drift in temperature and humidity sensors – Blessing
1. The temperature and humidity sensor will drift during use, which is impossible to avoid.
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The HiC2441 can adapt to any signal type without the need for complex configuration configurations, and users can complete loop commissioning very simply, quickly and reliably.
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Frequently Asked Questions on Photoelectric Sensors – Begaff
1. How to estimate the standard detector body of photoelectric sensors?
The thrift-beam type and the regressive reflection type are based on the diagonal length of the optical structure, and the scale of the opaque body with a large diameter is used as the standard object. The general through-beam type is based on the diagonal length of the projector and receiver as the standard detection ...
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Selection criteria for proximity switches
Points to note in the selection of proximity switches
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