Leuze KRT3CW.Q3S2/4T-M8 Contrast Sensor
The Leuze KRT3CW.Q3S2/4T-M8 contrast sensor provides 14.5 mm operating range, white LED light, and PNP switching output for precise contrast detection tasks in industrial automation. Manufactured by Leuze, this Leuze Contrast Sensor belongs to the KRT Series and operates with 10,000 Hz switching frequency, 0.05 ms response time, 12–30 V DC supply voltage, an M8 metal connector, IP67/IP69K protection, and teach input functionality for stable, repeatable contrast detection.
| Brand | Leuze |
| Product Type | Contrast Sensor |
| Product | KRT3CW.Q3S2/4T-M8 |
Leuze KRT3CW.Q3S2/4T-M8 Contrast Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Design | Cubic |
| Dimension (W x H x L) | 11.4 mm x 34.2 mm x 18.3 mm |
| Special version | Teach input Time function |
| Operating range | 14.5 mm ± 2 mm |
| Beam path | Focused |
| Light Source | LED, White |
| Light spot size [at sensor distance] | 1.5 mm x 4 mm [14.5 mm] |
| Light spot orientation | Horizontal |
| Type of light spot geometry | Rectangular |
| Light beam exit | Front |
| Wavelength | 400 ... 750 nm |
| Supply voltage UB | 12 ... 30 V, DC, Incl. residual ripple |
| Number of teach inputs | 1 Piece(s) |
| Number of digital switching outputs | 1 Piece(s) |
| Switching output | Transistor, PNP |
| Switching principle | Light switching |
| Switching frequency | 10,000 Hz |
| Response time | 0.05 ms |
| Con:1 Function | Signal OUT Teach input Voltage supply |
| Type of connection | Connector |
| Thread size | M8 |
| Type | Male |
| Material | Metal |
| No. of pins | 4 -pin |
| Housing material | Plastic |
| Housing color | Red |
| Type of fastening | Via optional mounting device |
| Type of display | LED |
| Operational controls | Teach button |
| Ambient temperature, operation | -40 ... 60 °C |
| Ambient temperature, storage | -40 ... 70 °C |
| Degree of protection | IP 67 IP 69K |
The KRT3CW.Q3S2/4T-M8 Leuze 14.5 mm Operating Range Contrast Sensor is a compact contrast detection device designed for industrial automation environments. This model uses a focused white LED light source with a 14.5 mm operating range and a rectangular light spot geometry for accurate contrast recognition. It operates on 12–30 V DC and delivers a PNP transistor switching output. The sensor is part of the Leuze KRT Series, supporting high-speed applications with 10,000 Hz switching frequency and reliable teach-based setup.
In industrial applications, the KRT3CW.Q3S2/4T-M8 contrast sensor is commonly used in packaging lines, conveyors, labeling systems, and automated assembly processes. It reliably detects printed marks, color contrasts, and surface variations on fast-moving materials. The fast response time ensures stable signal output during high-speed operation, while the focused beam path and front light exit support precise installation in compact machine layouts across automation systems.
The KRT3CW.Q3S2/4T-M8 reinforces Leuze’s contrast sensor design approach by combining durable construction with consistent detection performance. Its IP67 and IP69K protection ratings allow operation in demanding industrial conditions, including washdown environments. With defined optical geometry, teach-button control, and stable electrical characteristics, this model is suitable for long-term use in contrast-based detection tasks within modern industrial automation systems.
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