Leuze KRTW 55/4.1121-S8 Contrast Sensor
Leuze KRTW 55/4.1121-S8 contrast sensor provides 13 mm operating range, white LED light, and PNP transistor output switching capability. Manufactured by Leuze, this Leuze Contrast Sensor belongs to the KRT Series and supports 13 mm ± 2 mm operating range, white LED light source, PNP light/dark switchable output, 10,000 Hz switching frequency, M8 4-pin connector, teach button operation, and IP67/IP69K protection.
| Brand | Leuze |
| Product Type | Contrast Sensor |
| Product | KRTW 55/4.1121-S8 |
Leuze KRTW 55/4.1121-S8 Contrast Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Design | Cubic |
| Dimension (W x H x L) | 14 mm x 35.5 mm x 25 mm |
| Special version | Teach input Time function |
| Operating range | 13 mm ± 2 mm |
| Beam path | Focused |
| Light Source | LED, White |
| Light spot size [at sensor distance] | 1.5 mm x 4 mm |
| Light spot orientation | Vertical |
| Type of light spot geometry | Rectangular |
| Light beam exit | Front |
| Wavelength | - |
| Supply voltage UB | 10 ... 30 V, DC |
| Number of teach inputs | 1 Piece(s) |
| Number of digital switching outputs | 1 Piece(s) |
| Switching output | Transistor, PNP |
| Switching principle | Light/dark switchable |
| Switching frequency | 10,000 Hz |
| Response time | - |
| Con:1 Function | - |
| Type of connection | Connector |
| Thread size | M8 |
| Type | - |
| Material | Stainless steel |
| No. of pins | 4-pin |
| Housing material | Stainless steel |
| Housing color | - |
| Type of fastening | - |
| Type of display | LED |
| Operational controls | Teach button |
| Ambient temperature, operation | -30 ... 55 °C |
| Ambient temperature, storage | - |
| Degree of protection | IP 67 IP 69K |
The KRTW 55/4.1121-S8 Leuze Stainless Steel 4-pin Contrast Sensor is designed for stable contrast detection in industrial automation environments. The KRTW 55/4.1121-S8 operates with a 13 mm operating range, white LED light source, PNP transistor output, and 10,000 Hz switching frequency. It belongs to the KRT Series and is used where compact stainless steel sensors are required.
This contrast sensor is applied in conveyors, packaging machinery, printing systems, and automated assembly lines. Its focused beam path and rectangular light spot enable reliable detection of contrast marks on fast-moving materials. The stainless steel housing and teach-button control support consistent setup and long-term operation in washdown and demanding industrial conditions.
The KRTW 55/4.1121-S8 reflects Leuze’s focus on durability and reliable sensing performance. With IP67/IP69K protection, stable electrical switching, and stainless steel construction, it is suitable for continuous industrial use. As part of the Leuze KRT Series, it provides dependable contrast detection for precise automation applications.
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