microsonic nero-25/WK/CE Ultrasonic Sensor
Extract from online catalog, Date: 2025-10-02
Manufacturer: microsonic GmbH
Address: Phoenixseestraße 7, 44263 Dortmund, Germany
Contact: T +49 231 975151-0 / F +49 231 975151-51 / E info@microsonic.de
microsonic® is a registered trademark of microsonic GmbH. All rights reserved.
Product Overview
A collection of microsonic nero series ultrasonic sensors.
The nero ultrasonic sensor is available in an M18 cylindrical plastic housing with a detection range up to 1300 mm.
Main Characteristics
- 90° angled head variant
- UL Listed to Canadian and US safety standards
Configuration
- 1 switching output in npn or pnp base
- Analog output 4–20 mA or 0–10 V
- 4 detection ranges with a working zone from 20 mm to 1.3 m
- Microsonic teach-in capability
- 0.2 mm accuracy
- 10–30 V supply voltage
Description
The nero ultrasonic sensors are available in an M18 plastic sleeve. In addition to the axial beam direction variant, there is also a housing variant with a 90° angled head and radial beam direction. The ultrasonic proximity switches detect contactless and reliable objects with four detection ranges from 20 mm to 1.3 m.
Nero Sensor Family
Supports 2 output types and 4 detection ranges:
- 1 switching output with pnp or npn switching technology
- 1 analog output 4–20 mA or 0–10 V
Sensors with discrete output have three operating modes:
- Single switching point
- Bidirectional reflective barrier
- Window mode
Teach-in for single discrete output
Follow these steps:
- Position the detection object at the desired distance.
- Apply +UB to pin 2 for approximately 3 seconds.
- Then apply +UB to pin 2 again for 1 second.
Diagram: Illustration of the teach-in process for a single discrete output, showing an object being detected by the sensor.
Teach-in for bidirectional reflective barrier
Follow these steps:
- Apply +UB to pin 2 for approximately 3 seconds.
- Then apply +UB to pin 2 again for approximately 10 seconds.
Diagram: Illustration of the teach-in process for a bidirectional reflective barrier, showing the sensor emitting a signal and a reflector returning it.
For window configuration
Follow these steps:
- Position the object at the near window edge (1).
- Apply +UB to pin 2 for approximately 3 seconds.
- Then place the object at the far window edge (2).
- Then apply +UB to pin 2 again for 1 second.
Diagram: Illustration of the teach-in process for analog signal or window configuration using two switching points.
NC/NO contacts
Analog signal increase/decrease can be selected via pin 2.
Indicators
Green and yellow LEDs indicate the status of the discrete output and teach-in support.
Technical Specifications: nero-25/WK/CE
Mechanical Drawing
Diagram: Technical drawing of the nero-25/WK/CE sensor, showing dimensions and LED indicators.
Detection Zone
Diagram: Diagram illustrating the detection zone of the sensor, showing the beam pattern and range up to 350 mm.
| Parameter | Value |
|---|---|
| Operating range | 30 - 350 mm |
| Model | cylindrical M18 |
| Operating mode | Non-contact switch / reflective mode, window mode, reflective barrier |
| Features | 90° angled head, UL Listed |
Ultrasonic Specifics
| Parameter | Value |
|---|---|
| Measuring principle | Propagation of reflected signal over time delay |
| Transducer frequency | 320 kHz |
| Blind zones | 30 mm |
| Operating distance | 250 mm |
| Maximum distance | 350 mm |
| Resolution | 0.20 mm |
| Repeatability | ± 0.15 % |
| Accuracy | Temperature drift 0.17% / K |
Electrical Data
| Parameter | Value |
|---|---|
| Operating voltage UB | 10 - 30 VDC, reverse polarity protection |
| Voltage ripple | ± 10 % |
| Quiescent current | ≤ 40 mA |
| Connection type | 4-pin M12 connector |
Outputs and Inputs
Outputs
| Parameter | Value |
|---|---|
| Output 1 | Schaltausgang (Switching output), npn: Imax = 200 mA (-UB+2V) |
| Hysteresis | 3 mm |
| Switching frequency | 25 Hz |
| Response time | 32 ms |
| Delay on make | < 300 ms |
Inputs
| Parameter | Value |
|---|---|
| Input 1 | Teach-in mode |
Housing and Environmental
Housing
| Parameter | Value |
|---|---|
| Material | PBT |
| Ultrasonic transducer | Polyurethane foam, epoxy resin with glass content |
| Max. tightening torque | 1 Nm |
| Protection class acc. to EN 60529 | IP 67 |
| Operating temperature | -25 ° C to +70 ° C |
| Storage temperature | -40 ° C to +85 ° C |
| Weight | 20 g |
Technical Characteristics
| Parameter | Value |
|---|---|
| Temperature compensation | No |
| Control | Control input |
| Configuration options | Teach-in mode |
| Synchronization | No |
| Multiplex mode | No |
| Indicators | 1 x green LED: operational, 1 x yellow LED: switching status |
| Special features | 90° angled head, UL Listed |
Pin Assignment
Diagram: Diagram showing the pin assignment for the M12 connector, with pins labeled for +UB, Control-Eingang (Control Input), and D (Data/Output).
Order Number: nero-25/WK/CE
The content of this document is subject to technical changes. Specifications in this document are presented in a descriptive way only. They do not warrant any product features.
