Leuze KRTM 20M/P-12-6420-S12 Contrast Sensor
Leuze KRTM 20M/P-12-6420-S12 contrast sensor delivers 2 mm operating range, RGB LED light, and PNP transistor output. Manufactured by Leuze, this Leuze Contrast Sensor belongs to the KRT Series and supports 2 mm ± 1 mm operating range, RGB LED light source, PNP transistor switching output, 50,000 Hz switching frequency, 12–30 V DC supply, focused beam optics, stainless steel housing, and IP67 protection.
| Brand | Leuze |
| Product Type | Contrast Sensor |
| Product | KRTM 20M/P-12-6420-S12 |
Leuze KRTM 20M/P-12-6420-S12 Contrast Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Design | Cubic |
| Dimension (W x H x L) | 30 mm x 80 mm x 53 mm |
| Special version | Autocollimation Synchronization input Time function |
| Operating range | 2 mm ± 1 mm |
| Beam path | Focused |
| Light Source | LED, RGB |
| Light spot size [at sensor distance] | 1 mm x 3 mm |
| Light spot orientation | Vertical |
| Type of light spot geometry | Rectangular |
| Light beam exit | On face |
| Wavelength | - |
| Supply voltage UB | 12 ... 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 | 50,000 Hz |
| Response time | - |
| Con:1 Function | - |
| Type of connection | Connector |
| Thread size | M12 |
| Type | - |
| Material | Stainless steel |
| No. of pins | 5-pin |
| Housing material | Metal |
| Housing color | - |
| Type of fastening | - |
| Type of display | LED |
| Operational controls | Membrane keyboard |
| Ambient temperature, operation | -25 ... 60 °C |
| Ambient temperature, storage | - |
| Degree of protection | IP 67 |
The KRTM 20M/P-12-6420-S12 Leuze 12 mm Operating Range Contrast Sensor is designed for high-speed contrast detection in industrial automation systems. The KRTM 20M/P-12-6420-S12 operates with a 2 mm operating range, RGB LED light source, focused beam path, and PNP transistor output. It belongs to the KRT Series and is used where precise mark detection and stable switching are required.
This contrast sensor is commonly applied in packaging machines, labeling systems, printing processes, and automated assembly lines. Its high 50,000 Hz switching frequency supports fast-moving products, while light and dark switching ensures reliable detection of printed marks and surface contrasts. The stainless steel housing and IP67 protection enable consistent performance in demanding industrial environments.
The KRTM 20M/P-12-6420-S12 reflects Leuze’s focus on accurate and dependable sensing technology. With robust construction, stable electrical characteristics, and precise optical performance, it is suitable for continuous industrial operation. As part of the Leuze KRT Series, it provides reliable contrast detection for automation tasks requiring high speed, durability, and consistent signal quality.
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