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Brand: SICK
SICK WTB11-2P2461 Proximity Sensor
Description
Part number 1044442 is the WTB11-2P2461, a background-suppression proximity sensor from SICK’s W11 range. Objects inside the set range switch the output, while whatever lies beyond it (a guard, a belt frame, a wall) is ignored. The data sheet gives a maximum sensing range of 30 mm … 1,100 mm (sensing range value printed as 30 mm … 800 mm). The switching output is PNP with light/dark switching, the supply is 10 V DC … 30 V DC and the connection is Male connector M12, 4-pin.
Where the WTB11-2P2461 fits: detecting objects against a busy background
Typical jobs are presence checks on conveyors, pallet and carton detection, end-of-travel monitoring and counting products that pass a fixed point. Keep the front screen clean: a film of dust or oil lowers the received light and shifts the effective switching point over time.
Light comes from a PinPoint LED emitting visible red light with a spot of Ø 6 mm (200 mm). Adjustment: potentiometer, 5 turns. Response time ≤ 2.5 ms at 200 Hz switching frequency.
Technical specifications
| Parameter | Specification |
|---|---|
| Type code | WTB11-2P2461 |
| Part number | 1044442 |
| EAN | 4047084167089 |
| Product family | W11 |
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Dimensions (W x H x D) | 15.6 mm x 48.5 mm x 42 mm |
| Housing design (light emission) | Rectangular |
| Sensing range max. | 30 mm … 1,100 mm |
| Sensing range | 30 mm … 800 mm |
| Type of light | Visible red light |
| Light source | PinPoint LED |
| Light spot size (distance) | Ø 6 mm (200 mm) |
| Wave length | 660 nm |
| Adjustment | Potentiometer, 5 turns |
| Supply voltage UB | 10 V DC … 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 30 mA |
| Switching output | PNP |
| Output function | Complementary |
| Switching mode | Light/dark switching |
| Signal voltage PNP HIGH/LOW | Uv – 2.5 V / approx. 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 2.5 ms |
| Switching frequency | 200 Hz |
| Connection type | Male connector M12, 4-pin |
| Circuit protection | A ; C ; D |
| Protection class | III |
| Weight | 120 g |
| Housing material | Plastic, ABS |
| Optics material | Plastic, PMMA |
| Enclosure rating | IP66; IP67; IP69K |
| Ambient operating temperature | –30 °C … +60 °C |
| Ambient temperature, storage | –40 °C … +75 °C |
| MTTFD | 905 years |
| DCavg | 0 % |
| Declarations and certificates in the data sheet | EU declaration of conformity; UK declaration of conformity; ACMA declaration of conformity; Moroccan declaration of conformity; China RoHS; ECOLAB certificate; cULus certificate; Photobiological safety (DIN EN 62471) certificate |
Type code WTB11-2P2461 and part number 1044442
If you are replacing a failed sensor, compare three things: the part number 1044442, the electrical output and the connection. The type code WTB11-2P2461 helps you recognise the family WTB11, but two versions can share most of the code and still wire differently.
Neighbouring versions of this family that SICK lists as active, with their part numbers:
- WTB11-2P2461P04 (part no. 1046950)
- WTB11-2N2461 (part no. 1051818) – Switching output: NPN
- WTB11-2K2461 (part no. 1051075)
Mounting, wiring and set-up notes for WTB11-2P2461
Wire it to a supply of 10 V DC … 30 V DC. Protection is IP66; IP67; IP69K, and the permitted ambient range in operation is –30 °C … +60 °C. The body measures 15.6 mm x 48.5 mm x 42 mm and weighs 120 g. Current draw is 30 mA. Document the set distance or teach value on the maintenance sheet, so that a swapped sensor can be returned to the same setting quickly.
Documents and quotation
We attach SICK’s own data sheet for part no. 1044442 (WTB11-2P2461) as an unaltered PDF; use it to compare dimensions, connections and ratings with the device on your machine. Send the type code and part number with quantity and delivery location through the RFQ form and we will quote. Related items are listed under Sensors & Transmitters. Please verify the variant against the nameplate of the device you are replacing, since similar types differ in small details. The data sheet is the authority.
Datasheets & Documents
- Data Sheet SICK WTB11-2P2461 official data sheet (part no. 1044442) Download
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About brand
Machine builders have relied on SICK since 1946 for the sensors that tell a controller where a part, a pallet or a person is. The company, based in Waldkirch, Germany, makes photoelectric, inductive and magnetic sensors, distance sensors and safety devices. Seven Star LLC supplies SICK sensors to maintenance teams and integrators in Oman, mostly as exact replacements identified by type code and part number.
SICK sensor families on this page
Five of the SICK families listed here are described below. The W4 miniature photoelectric sensors include the WTB4-3, a proximity sensor with background suppression. IME is the standard inductive proximity line, and the IME18 is the M18 housing size. RZT7 cylinder sensors fit T-slot pneumatic cylinders and detect the piston magnet. The DT35 belongs to the Dx35 laser distance sensors for mid-range measurement. The microScan3 is a safety laser scanner that guards hazardous zones around machines and vehicles.
Where SICK sensors are used
SICK sensors are fitted on packaging and bottling lines, conveyors, palletizers, warehouse cranes and automated guided vehicles. Safety laser scanners protect robot cells and transfer cars. In process plants, the same proximity and cylinder sensors report valve and damper positions on packaged equipment.
Ordering SICK sensors: what we need
A SICK type code such as IME18-08NPSZW2K packs the whole specification into one string: housing size, sensing range, flush or non-flush mounting, output type and connection. Each variant also has a 7-digit part number, and that number is the safest identifier. Please send:
- Type code and part number from the sensor label, or a photo of it
- Output type (PNP or NPN, normally open or closed) and connection (cable length or M8/M12 plug)
- For microScan3: variant (Core or Pro), interface, protective field range, plus system plug and bracket
We check the code in SICK's documentation and tell you if the manufacturer lists a successor.
Browse SICK products by category: Sensors & Transmitters.
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Frequently Asked Questions
What is the sensing range of the WTB11-2P2461?
The data sheet lists a maximum sensing range of 30 mm ... 1,100 mm and a sensing range of 30 mm ... 800 mm.
What output and connection does the WTB11-2P2461 have?
Output: PNP, light/dark switching. Connection: Male connector M12, 4-pin.
Which supply voltage does it need?
10 V DC ... 30 V DC with a current consumption of 30 mA.
How is the sensing distance set?
Potentiometer, 5 turns.
Which part number identifies this exact variant?
Part no. 1044442, type code WTB11-2P2461. Variants with other connections or outputs have different part numbers.
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