SICK WTB2S-2P3251 Miniature Photoelectric Sensor

USD 150.00

Compact photoelectric proximity sensor with background suppression, 1-150mm sensing range, PNP output, IP67, 10-30VDC, and 1000Hz switching frequency.

SKU SICK-1066111 Category
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SICK WTB2S-2P3251 Miniature Photoelectric Sensor

Model Identifier WTB2S-2P3251
Official Part Number 1066111
GTIN Standard 4047084300806

Technical Overview

Compact photoelectric proximity sensor with background suppression, 1-150mm sensing range, PNP output, IP67, 10-30VDC, and 1000Hz switching frequency.

Key Features

  • Miniature photoelectric sensor with background suppression.
  • Sensing range from 1 mm to 150 mm.
  • PNP output with adjustable light/dark switching.
  • Visible red PinPoint LED light source (640 nm wavelength).
  • Adjustment via 3-turn potentiometer.
  • Wide supply voltage range of 10 VDC to 30 VDC.
  • High switching frequency of 1000 Hz.
  • IP67 enclosure rating for industrial environments.
  • Compact rectangular housing made of ABS/PC plastic.
  • Pre-wired with 200 mm PVC cable and M8, 4-pin male connector.
  • Operating ambient temperature range from -25°C to +50°C.
  • Low current consumption of 20 mA.

Reliable background suppression allows for the detection of challenging objects, including those with only 1% reflectance like black materials.

Technical Specification Matrix

ParameterValue
Sensing Range1 mm ... 150 mm
Sensor/detection principlePhotoelectric proximity sensor, Background suppression
Connection TypeCable with male connector, M8, 4-pin, 200 mm, PVC
Output TypePNP
Output FunctionLight/dark switching, Selectable
Output Current< 50 mA
Light SourcePinPoint LED, visible red light (640 nm)
AdjustmentPotentiometer, 3 turns
Supply Voltage10 VDC ... 30 VDC
Current Consumption20 mA
Switching Frequency1000 Hz
Response Time≤ 0.5 ms
Housing MaterialPlastic ABS/PC
Optics MaterialPlastic PMMA
Cable MaterialPVC
Ingress Protection (IP) RatingIP67
Operating Temperature-25°C ... +50°C
Dimensions (H x W x D)27.5 mm x 7.7 mm x 13.5 mm
Physical Weight (kg)0.02
Dimensions L x W x H (cm)1.35 x 0.77 x 2.75

Industrial Applications

1. High-Speed Object Detection in Small Assembly Lines

The sensor's miniature size (27.5mm x 7.7mm x 13.5mm) and rapid 1000 Hz switching frequency enable precise detection of small, fast-moving components in highly constrained automated assembly environments, ensuring accurate positioning and counting.

Problem Solved

Prevents misfeeds and incorrect counts in compact, high-throughput manufacturing processes by reliably detecting small objects that move quickly.

Miniature sensorHigh-speed detectionAssembly automationSmall partsPhotoelectric

2. Presence Detection of Diverse Materials in Packaging Machinery

Equipped with background suppression and the ability to detect black objects with only 1% reflectance, this sensor ensures reliable presence detection of various packaging materials, including dark plastics or foils, within the tight tolerances of modern packaging machines. Its 1-150mm sensing range accommodates different package sizes.

Problem Solved

Guarantees accurate material feeding and sealing, reducing packaging errors and waste when processing a mix of light and dark, low-reflectivity packaging components.

Background suppressionPackaging automationDark object detectionMaterial handlingProximity sensor

3. Harsh Environment Conveyor Monitoring

With an IP67 rating and robust ABS/PC housing, the sensor provides reliable object detection on conveyors in industrial settings prone to dust, splashing water, or coolants. The 10-30VDC supply voltage offers broad compatibility with industrial power systems.

Problem Solved

Ensures continuous and accurate object tracking in challenging industrial environments, minimizing downtime and maintenance costs associated with sensor failures due to environmental factors.

IP67Harsh environmentConveyor systemIndustrial automationWater resistanceDust protection
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