Slot Sensor or Slot Type Photoelectric Sensor is a specially designed photoelectric sensor that detects objects through a narrow slot opening. This type of switch typically consists of a transmitter (emitting infrared light or other types of light) and a receiver, placed side by side at both ends of the slot. When an object passes through the slot, it blocks the beam of light and triggers the output signal of the switch.

characteristic:

Non contact detection: The slot type photoelectric switch can detect objects without physical contact, reducing mechanical wear.

High precision detection: Due to the beam being concentrated in a narrow area, high-precision position detection can be achieved.

Strong adaptability: able to detect transparent, semi transparent, and opaque objects.

Easy to install: Usually designed with fixed mounting holes for easy installation and alignment.

Multiple output types: PNP, NPN, or other types of output signals can be provided to adapt to different control systems.

Structure:

The basic structure of slot type photoelectric switches includes:

Emitter: Usually an infrared LED used to emit a beam of light.

Receiver: usually a photodiode or phototransistor used to receive a beam of light emitted by a transmitter.

Notch: A narrow opening used to restrict the path of a beam of light.

Shell: protects internal components and provides installation points.

Electronic circuit: processing receiver signals and converting them into output signals.

Application:

Slot type photoelectric switches are widely used in various automation and detection systems, including:

Packaging industry: used to detect whether products are correctly placed on packaging lines.

Conveyor belt system: used to detect the position and passing status of objects.

Printing industry: used to detect the position of paper or printed materials.

Automated assembly line: used to detect the presence and position of parts.

Elevator door safety system: used to detect objects in the gap between elevator doors and prevent pinch accidents.

Due to the wide variety of slot type photoelectric switches, there is no unified packaging and size standard. Generally speaking, their appearance can be rectangular or square, with fixed mounting holes for easy vertical or horizontal installation. The width of the slot is one of the key parameters, as it determines the minimum object size that the switch can detect.

To obtain detailed packaging and dimensional information for a specific slot type photoelectric switch, you need to refer to the product's data manual or contact the manufacturer. Data manuals usually provide detailed information such as external dimension drawings, installation dimensions, weight, and connection methods (such as cable outlets or terminal blocks).

Here are some common examples of slot type photoelectric switch dimensions (usually in millimeters):

Small slot type photoelectric switch: length may be between 20-50mm, width may be between 10-20mm, and height may be between 10-30mm.

Medium slot type photoelectric switch: length may be between 50-100mm, width may be between 20-40mm, and height may be between 20-50mm.

Large slot type photoelectric switch: length may exceed 100mm, width between 40-80mm, and height between 30-70mm.

Please note that the above dimensions are for reference only, and actual product dimensions may vary. When selecting slot type photoelectric switches, in addition to size, other factors should also be considered, such as detection distance, working voltage, output type, protection level (such as IP65, IP67, etc.), and whether special functions are required (such as self diagnosis, remote setting, etc.).

matters needing attention:

When using slot type photoelectric switches, the following points should be noted:

Installation position: Ensure that the photoelectric switch is installed in the appropriate position so that the beam can accurately detect the target object.

Environmental interference: Avoid strong background light or interference from other light sources, which may affect the accuracy of detection.

Cleaning and maintenance: Regularly clean the grooves and optical components to maintain optimal detection performance.

Calibration: After installation, it may be necessary to calibrate the photoelectric switch to ensure its normal operation.

When selecting slot type photoelectric switches, reference should be made to the manufacturer's data manual and application notes to obtain detailed performance parameters, recommended design guidelines, and usage recommendations. Slot type photoelectric switches are very useful tools in many applications that require precise object detection due to their high precision and reliability.