Photoelectric Sensors
SICK WL9G-3P2432 Sensor
SICK WL9G-3P2432 long-range diffuse photoelectric sensor, 50-3000 mm, PNP, part 1072611. One-sided detection across wide conveyor aisles without reflectors.
Overview
The SICK WL9G-3P2432 (part number 1072611) is a long-range diffuse photoelectric sensor in the W9 housing family. It detects objects from one side at distances of up to 3000 mm (listing range 50 mm to 3000 mm), which makes it useful where reflectors cannot be mounted and long distances must be covered.
How It Works
As an energetic diffuse sensor, it evaluates the light reflected directly from the target. When the returned intensity crosses the set threshold, the output switches. Because range depends on reflection, light and large objects are detected farther away than dark or small ones; the sensitivity adjustment adapts the sensor to the target in use.
Key Features
- Long sensing range of 50 mm ... 3000 mm for large-distance detection
- One-sided mounting without reflector or receiver unit
- PNP switching output for standard control systems
- Sensitivity adjustment for matching the target reflectivity
- Compact rectangular W9 housing with sturdy mounting options
- Modulated light for dependable operation under ambient light
Typical Applications
- Detection of pallets and large totes across wide conveyor aisles
- Vehicle or carriage presence checks where reflectors are impractical
- Monitoring of bulk material flow at longer distances
- Object detection at crane and storage and retrieval positions
- Long-range presence sensing on intralogistics transfer cars
Specifications
Attribute | Value |
|---|---|
Model | SICK WL9G-3P2432 |
Part number | 1072611 |
Detection principle | Diffuse (energetic) photoelectric |
Sensing range | 50 mm ... 3000 mm (depending on target reflectivity) |
Output type | PNP switching output |
Installation and Setup Notes
Set the sensitivity using the actual target at the real mounting distance; light-colored flat targets give the longest range, while dark fabrics or black plastics reduce it substantially. Avoid backgrounds that reflect strongly within the beam cone, since energetic diffuse sensors cannot separate target and background by distance. For dark targets against bright backgrounds, a background-suppression sensor is the better engineering choice.
Frequently Asked Questions
How far does the WL9G-3P2432 detect a white carton?
With light, flat targets the range extends up to about 3000 mm; the listed range is 50 mm to 3000 mm depending on the target.
Does it need a reflector?
No. It works diffusely on the light reflected by the object itself.
Can it be used for dark textile detection at 2 m?
Dark textiles reflect little light, so the reliable range is much shorter than the maximum; test with the real material or choose a through-beam arrangement for guaranteed detection.
Related Photoelectric Sensors
For retro-reflective long-range detection with a reflector, see the SICK WL9M4G-3P2432. For a compact diffuse alternative, see the SICK WTB12-3P2431.
