Leuze HTU318-400.3/2NK-M12 Ultrasonic Sensor
Leuze HTU318-400.3/2NK-M12 Ultrasonic Sensor delivers 0.05–0.4 m operating range, 300 kHz ultrasonic frequency, and NPN transistor output for industrial sensing. This Leuze Ultrasonic Sensor features M18 x 1 mm cylindrical design, 18 mm x 91.6 mm housing, 8° opening angle, < 2 mm resolution, 10–30 V DC supply, 10 Hz switching frequency, 50 ms response time, 5-pin M12 connector, plastic housing, -20 to 70 °C operation, IP67 protection, and belongs to the 318B series.
| Brand | Leuze |
| Product Type | Ultrasonic Sensor |
| Product | HTU318-400.3/2NK-M12 |
Leuze HTU318-400.3/2NK-M12 Ultrasonic Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Design | Cylindrical |
| Thread Size | M18 x 1 mm |
| Dimension | 18 mm x 91.6 mm |
| Operating range | 0.05 ... 0.4 m |
| Operating principle | Diffuse reflection principle with background suppression |
| Ultrasonic frequency | 300 kHz |
| Opening angle | 8 ° |
| Adjustment range | - |
| Resolution | < 2 mm |
| Supply voltage UB | 10 ... 30 V, DC |
| Number of Connections | - |
| Switching voltage | - |
| Switching output 1 | Transistor, NPN |
| Switching frequency | 10 Hz |
| Interface Type | - |
| Response time | 50 ms |
| Connection 1 Function | Signal IN Signal OUT Voltage supply |
| Type of connection | Connector |
| No. of Pin | 5 -pin |
| Housing material | Plastic |
| Ambient temperature, operation | -20 ... 70 °C |
| Ambient temperature, storage | -20 ... 70 °C |
| Degree of protection | IP 67 |
The HTU318-400.3/2NK-M12 categorized under HTU318-400.3/2NK-M12 Leuze 0.4m Operating Range Ultrasonic Sensors operates within a 0.05–0.4 m operating range using 300 kHz ultrasonic frequency. It provides NPN transistor output with a 10–30 V DC supply and 10 Hz switching frequency. This model belongs to the 318B Series and supports industrial automation systems requiring compact short-range ultrasonic detection.
In conveyors, packaging machines, assembly systems, and automated material handling equipment, the sensor enables precise non-contact object detection. The M18 cylindrical housing supports structured machine integration. With 50 ms response time and IP67 protection, it maintains stable output performance in industrial environments exposed to dust and vibration.
The HTU318-400.3/2NK-M12 from Leuze integrates through a 5-pin M12 connector and operates within -20 to 70 °C ambient conditions. As part of the 318B Series, this Leuze ultrasonic sensor ensures consistent signal transmission and reliable detection behavior across manufacturing and process automation applications in India.

