Leuze KRTM 20M/N-20-3320-S12 Contrast Sensor
Leuze KRTM 20M/N-20-3320-S12 contrast sensor provides 20 mm operating range, RGB LED light, and NPN transistor output switching applications. Manufactured by Leuze, this Leuze Contrast Sensor belongs to the KRT Series and supports 20 mm ± 2 mm operating range, RGB LED light source, NPN transistor switching output, 50,000 Hz switching frequency, 12–30 V DC supply, stainless steel housing, and IP67/IP69K protection.
| Brand | Leuze |
| Product Type | Contrast Sensor |
| Product | KRTM 20M/N-20-3320-S12 |
Leuze KRTM 20M/N-20-3320-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 | 20 mm ± 2 mm |
| Beam path | - |
| Light Source | LED, RGB |
| Light spot size [at sensor distance] | - |
| Light spot orientation | in center |
| Type of light spot geometry | Round |
| 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, NPN |
| 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 IP 69K |
The KRTM 20M/N-20-3320-S12 Leuze 20mm Transistor NPN Contrast Sensor is designed for precise contrast detection in industrial automation environments. The KRTM 20M/N-20-3320-S12 operates with a 20 mm operating range, RGB LED light source, NPN transistor output, and 50,000 Hz switching frequency. It belongs to the KRT Series and is used where stable detection of contrast marks is required.
This contrast sensor is applied in packaging systems, conveyor lines, labeling machines, and automated assembly equipment. Its high switching frequency enables accurate detection on fast-moving materials, while autocollimation and synchronization input functions help maintain signal consistency. The stainless steel housing ensures mechanical durability and resistance in harsh industrial conditions.
The KRTM 20M/N-20-3320-S12 represents Leuze’s approach to reliable and consistent contrast sensing. With IP67/IP69K protection, robust construction, and stable optical performance, it is suitable for continuous industrial operation. As part of the Leuze KRT Series, it delivers dependable contrast detection for demanding automation applications.
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