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:
> We offer high quality, fast delivery, competitive price for .
> Please send your RFQ to get the latest price.
> Normally, we will ship the items in 1-2 weeks after receive the payment.
> We can ship to you by UPS/DHL//EMS/Fedex. Please contact us and we will use your preferred ways.
> We have a large stock and the prices are variable, so sometimes the prices we post are not accurate. If needed, please contact us for specific prices.
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.
