Purchase now: Wenglor HK12PA7 BGS Sensor
Purchase now: Atlantech Drives provides you the Wenglor HK12PA7, a miniature Reflex Sensor with Background Suppression (BGS). This is one of the most reliable sensors for short-range detection (up to 120 mm) because it uses triangulation geometry to ignore objects behind the target. Whether you have a shiny steel conveyor rail or a moving machine part just a few centimeters behind your product, the HK12PA7 will reliably detect the target and ignore the background, regardless of the background’s color or brightness.
Technical Specifications and Precision
The sensor uses a focused Red Light beam and features a precise Potentiometer (multi-turn) to adjust the switching distance between 18 mm and 120 mm. The electronic background suppression is so effective that the difference between gray (18% remission) and black (6% remission) objects causes less than 10% switching error (Black/White shift). The housing is incredibly small, fitting into tight grippers or small robotic end-effectors.
- Part Number: HK12PA7.
- Type: Diffuse with Background Suppression.
- Range: 18 … 120 mm (Adjustable).
- Light Source: Red Light.
- Switching Frequency: 1,300 Hz.
- Output: PNP (NO/NC switchable).
- Connection: M8 x 1, 4-pin.
- Temperature: -25°C … +60°C.
- Housing Material: Plastic (Miniature).
Expert Tips: Mounting on Conveyors
Looking down is not always best. Expert Tip: When detecting flat objects on a conveyor belt, do not mount the HK12PA7 strictly perpendicular (90°) to the belt. If the object is shiny (like a PCB or a plastic bag), the direct reflection can blind the receiver. Mount the sensor at a slight tilt (approx. 5-10°) relative to the flow. This ensures the BGS triangulation works perfectly and the background belt is completely ignored.
Frequently Asked Questions (FAQs)
Q: Can it detect black rubber parts?
A: Yes, thanks to the background suppression technology, it detects dark/black objects very well, as long as they are within the set sensing range. The color shift is minimal compared to standard diffuse sensors.
Q: What is the connector type?
A: It has a standard M8 4-pin metal connector. Make sure your patch cable is 4-pin female (Pin 1=24V, Pin 3=0V, Pin 4=Switching Signal).
Do you need more references from this brand? Explore our full catalog of Wenglor here.
