WTB2S-2P3251 SICK Pressure Temperature Transmitter -40 To 185°F 100-240VAC
WTB2S-2P3251 Description
The WTB2S-2P3251 is an ultra-compact, rectangular photoelectric proximity sensor with background suppression (BGS) technology, engineered for reliable detection of small, dark, or reflective objects in confined industrial spaces. It uses a high-precision PinPoint red LED light source (640 nm) to deliver a focused, stable detection beam, with adjustable sensing range from 1 mm to 150 mm (standard operating range 18–110 mm). Equipped with PNP switching output, light/dark selectable mode, and IP67 protection, it ensures consistent performance in harsh industrial environments, ideal for precise presence, positioning, and counting tasks.
WTB2S-2P3251 Key Features
- Ultra-compact rectangular housing (7.7 × 27.5 × 13.5 mm) for installation in extremely limited spaces
- Advanced background suppression (BGS) eliminates interference from background surfaces, ensuring accurate detection of target objects only
- PinPoint red LED (640 nm) with Ø3.5 mm focused light spot (at 50 mm) for reliable detection of small parts and low-reflectivity objects
- 3-turn precision potentiometer for easy, fine adjustment of sensing distance
- PNP transistor output with light/dark switching selectable, max 50 mA output current
- Fast response time (<0.5 ms) and high switching frequency (1,000 Hz) for high-speed automation lines
- IP67 environmental protection, dustproof and waterproof, suitable for wet and dusty industrial conditions
- Wide 10–30 V DC supply voltage range with reverse polarity and short-circuit protection
- Long-life LED (100,000 hours average service life) for minimal maintenance
WTB2S-2P3251 Materials & Applications
Materials
- Housing: High-strength ABS/PC blended plastic, impact-resistant and chemical-resistant
- Optical lens: PMMA (acrylic) plastic, high light transmittance and scratch resistance
- Internal components: Industrial-grade PCB, high-temperature resistant electronic components
- Connection cable: PVC-insulated, 4-pin M8 male connector, 200 mm length, Ø3 mm diameter
- Sealing: Oil-resistant rubber gaskets for IP67 sealing performance
Typical Applications
- Small parts detection and counting in electronics assembly, packaging, and sorting lines
- Precise positioning and presence verification in robotics, pick-and-place systems
- Object detection on conveyors, feeders, and automated assembly machinery
- Detection of dark, reflective, or transparent objects in food and beverage processing
- Position monitoring in printing, textile, and semiconductor manufacturing equipment
- General automation tasks requiring compact, reliable photoelectric sensing in confined spaces
WTB2S-2P3251 Important Parameters
| Parameter |
Specification |
| Part Number |
WTB2S-2P3251 |
| Sensor Type |
Photoelectric Proximity Sensor, Background Suppression (BGS) |
| Light Source |
PinPoint Visible Red LED, 640 nm wavelength |
| Sensing Range |
Adjustable: 1–150 mm; Standard: 18–110 mm |
| Light Spot Size |
Ø3.5 mm (at 50 mm distance) |
| Output Type |
PNP Transistor, Light/Dark Switching Selectable |
| Max Output Current |
≤50 mA |
| Response Time |
<0.5 ms |
| Switching Frequency |
1,000 Hz |
| Supply Voltage |
10–30 V DC, Ripple ≤5 Vpp |
| Power Consumption |
≤20 mA |
| Protection Rating |
IP67 |
| Housing Dimensions (W×H×D) |
7.7 × 27.5 × 13.5 mm |
| Connection |
4-pin M8 male connector, 200 mm PVC cable |
| Operating Temperature |
-25 °C to +50 °C |
| Storage Temperature |
-40 °C to +75 °C |
| Humidity |
5–95% RH, non-condensing |
| Adjustment |
3-turn precision potentiometer |
| Certifications |
CE, RoHS, UL (NRKH.E181493) |
Good Service in WTL:
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WTL is not liable for any personal injury or property damage resulting from the use of this equipment. It is
buyer's responsibility as to the safe handling & operation of this equipment and to verify equipment is
compliance to their machinery.
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