Garantta introduces the GPS-LD series of square diffuse reflection Laser Sensor Switch. Utilizing a diffuse reflection working principle with an integrated transmitter and receiver, it achieves detection without a reflector. Supporting both NPN and PNP output options, it is compatible with various automated control systems.
Single-sided installation, one-step solution. Unlike through-beam sensors, it eliminates the need for bilateral alignment, and unlike specular reflectors, it doesn't require an additional reflector. The single-sided integrated design significantly simplifies the installation process, effectively reducing wiring and component costs, providing a flexible and efficient solution for compact devices.
Laser-level precision, stable detection even for small objects. A 650nm red laser light source provides a precisely focused circular spot, capable of detecting objects as small as 1mm. Compared to LED light source sensors, laser sensors are easier to align and more accurate, making them particularly suitable for detecting the presence and absence of small parts and precision electronic components. The diffuse reflection detection method is highly adaptable to the color and material of object surfaces, performing particularly reliably in industries requiring the detection of diverse materials, such as packaging, food and beverage, and electronics.
Flexible detection, customizable settings. The GPS-LD series Laser Sensor Switch offers multiple detection distance options from 20mm to 800mm to meet the detection needs of different workstations. Equipped with sensitivity and potentiometer adjustment functions, on-site commissioning is quick and convenient, effectively reducing equipment downtime during production changes.
Characteristics
1. Durable design ensures uninterrupted operation of the machine
2. Has completely reliable detection performance
3. The sturdy and waterproof shell can withstand high-pressure cleaning
4. Linear or right-angle connector cables are optional.
5. Compact and compact casing, long service life
6. Test the stability of the Laser Sensor Switch through input testing
7. The sensor can be set up through the teaching key and the input control line
8. Clear and visible laser spot
9. Glass fiber reinforced plastic shell
To ensure your laser sensor switches safely, please follow the following regulations when using:
- This sensor is only for target object detection purposes. Do not use this product to protect the human body or for purposes such as human body parts.
- This sensor cannot be used as an explosion-proof product. Please do not work in hazardous areas and/or use this product in an explosive gas environment.
- Use an AC power supply. Otherwise, it will lead to a product explosion or fire.
- Do not wire the amplifier along the power or high voltage lines; otherwise, the sensor will be affected, the device may malfunction, or be damaged due to noise.
- When using a commercial switch-mode voltage regulator, make sure to connect the chassis ground terminal and the ground terminal.
- Do not enter the light receiving surface outdoors or in areas where external light can directly enter, and set up for use.
FAQ
Q：What is a miniature Laser Sensor? What are its core advantages compared to ordinary LED photoelectric sensors?
A miniature Laser Sensor Switch is a compact photoelectric switch that uses a precision laser beam as the detection light source. Its core principle is to emit a very fine, high-energy-density visible laser beam and detect changes in the reflection or obstruction of the beam by an object using a receiver, thereby outputting a switching signal.
Compared to ordinary LED (infrared or red light) photoelectric sensors, its core advantages include:
Extremely high detection accuracy and resolution: The laser beam has a very small divergence angle (usually <0.1°), forming an almost parallel beam with a very small spot size (down to sub-millimeter level). This allows it to accurately detect tiny objects, edge positions, or be used for high-precision positioning.
Ultra-long detection distance: Due to concentrated energy and good directionality, miniature laser sensors typically have a much longer detection distance than LED-type sensors at the same power, reaching several meters or even tens of meters.
Excellent resistance to ambient light interference: The laser's monochromaticity and coherence are extremely strong, and the sensor receiver can be equipped with a very narrow-band optical filter, almost completely filtering out ambient stray light (such as sunlight and artificial light), ensuring stable operation in complex lighting environments.
Easy installation and debugging: The visible red laser spot is clearly visible, making optical path alignment, debugging, and troubleshooting very intuitive and simple.
Typical applications: Electronic component positioning, wafer counting, small parts detection, tension control, precision assembly, long-distance detection, etc.
Q：What are the main detection methods of miniature laser photoelectric sensors? How to choose the right one?
Miniature Laser Sensor Switch mainly offer three basic detection methods, which should be selected based on the application scenario:
Through-beam type:
Principle: The transmitter and receiver are installed separately and facing each other. The sensor triggers when an object passes through and blocks the laser beam.
Features: Longest detection distance, highest stability, unaffected by object color, material, or surface gloss.
Applicable scenarios: Detection of any opaque object passing through, object counting, high-speed access control, long-distance safety protection, etc.
Reflective type (retro-reflective type):
Principle: The sensor emits a laser beam to a dedicated corner reflector, and the light returns to the receiver along the same path. It triggers when an object blocks the light path.
Features: Requires only single-sided wiring, easier to install than the through-beam type. Medium detection distance. Insensitive to object surface characteristics.
Applicable scenarios: AGV collision avoidance, automatic doors, packaging machinery, and situations where space limitations prevent the installation of a through-beam type.
Diffuse reflection type:
Principle: The sensor emits a laser beam that directly illuminates the surface of the object being measured, and the object diffusely reflects part of the light back to the receiver.
Features: Most commonly used, requires only single-sided installation, no reflector needed. However, its detection distance and stability are significantly affected by the object's surface color, material, and tilt (light-colored, glossy objects have a longer detection distance, while dark, light-absorbing, or rough objects have a shorter detection distance).
Applicable scenarios: Situations where the detection distance and object color/material variations are not significant, such as material level detection, object presence detection on conveyor belts, and robot grasping and positioning.
Selection suggestions: Prioritize the through-beam type for optimal reliability and interference immunity; in cases of installation limitations and inconsistent object surfaces, consider background suppression (BGS) or distance-setting diffuse reflection laser sensors, which detect based on distance rather than reflectivity, effectively eliminating background interference.
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