Proximity Sensors
SICK CM18-08BNP-EW1 Sensor
SICK CM18-08BNP-EW1 capacitive proximity sensor, part 6058146. M18 barrel detects liquids, plastics and granulates through non-metallic walls.
Overview
The SICK CM18-08BNP-EW1 (part number 6058146) is a capacitive proximity sensor in the M18 cylindrical format. It detects both metallic and non-metallic objects, from plastic bottles to granulates and liquids, through changes in electrical capacitance, and mounts through a standard bore with locking nuts.
How It Works
An electrostatic field projects from the active face of the sensor. When an object with a different dielectric constant enters the field, the capacitance changes and the electronics switch the output. Because detection depends on dielectric properties rather than reflectivity, it works on wood, plastic, glass, liquids and foams as well as metals.
Key Features
- Capacitive detection of metallic and non-metallic objects
- M18 cylindrical housing for standard bore mounting
- Part number 6058146
- Suitable for liquid level detection through non-metallic walls
- Adjustable sensitivity for different media
- Insensitive to dust and ambient light
Typical Applications
- Level detection in plastic tanks and containers
- Presence detection of bottles and cartons on filling lines
- Monitoring of granulate and powder in feed systems
- Detection of packaging materials on conveyors
- Fill checks through non-metallic container walls
Specifications
Attribute | Value |
|---|---|
Model | SICK CM18-08BNP-EW1 |
Part number | 6058146 |
Detection principle | Capacitive proximity sensing |
Housing format | M18 cylindrical |
Installation and Setup Notes
Adjust the sensitivity so the sensor does not trigger on the mounting bracket or container wall behind the target; capacitive sensors see any dielectric in the field. Keep a clear zone around the active face. For level detection through a tank wall, compensate for the wall thickness with the sensitivity setting.
Frequently Asked Questions
Can it detect liquid inside a plastic tank?
Yes, that is a classic capacitive application: the sensor detects the liquid through the non-metallic tank wall.
Does humidity affect it?
Strong condensation on the active face can influence the field, so keep the face clean and dry where possible.
Can it detect metal?
Yes, metals are detected reliably along with non-metallic materials.
Related Proximity Sensors
For the larger M30-format capacitive sensor, see the SICK CM30-25NPP-EC1. For inductive metal detection, see the SICK IME12-08NPSZC0S.
