A. Product Overview

The Autonics CR30-15AO Capacitive Proximity Sensor is part of the Autonics CR Series of cylindrical capacitive sensors. Unlike standard inductive proximity sensors that are primarily intended for metallic objects, the CR30-15AO can detect a wider range of materials.

Its M30 cylindrical construction and 15 mm nominal sensing distance make it suitable for industrial machines, material handling systems, packaging equipment, storage vessels and level monitoring systems.

Key Specifications

The sensor is particularly useful where the target material may not always be metal.

B. Working Principle

The CR30-15AO works on the capacitive sensing principle.

The sensing face produces an electrostatic field. When an object enters this field, the capacitance around the sensing surface changes. The sensor detects this change and switches its output.

Because detection is based on a change in capacitance rather than only electromagnetic interaction with metal, the CR30-15AO can detect materials such as:

Metal
Plastic
Water
Stone
Grains
Powders
Other solid and liquid materials

The built-in sensitivity adjustment allows the detection level to be adjusted according to the material and application.

For example, the sensitivity required to detect a metal component may be different from that required for plastic pellets, grain or liquid through a container wall.

When the target reaches the configured detection point, the sensor activates its normally open output, which can then provide a switching signal to the connected control system.

C. Why Is Autonics CR30-15AO Used?

The main advantage of the Autonics CR30-15AO is its ability to detect many different types of materials without physical contact.

1. Non-Metallic Object Detection

The sensor can detect materials that conventional inductive proximity sensors may not detect effectively, including plastic, water, grain and other non-metallic substances.

2. Level Detection

It can be used for detecting the presence or level of materials inside:

Tanks
Hoppers
Bins
Containers
Silos
Storage vessels

Typical materials include water, powder, pellets, grains and other process materials.

3. Industrial Automation

The sensor can provide an ON or OFF detection signal for automated machinery and process control systems.

It can be used for:

Object presence detection
Position detection
Material detection
Level monitoring
Machine sequencing
Process automation

4. Non-Contact Detection

Since physical contact with the target is not required, the sensor is suitable for applications where mechanical switches may experience wear.

5. Adjustable Sensitivity

Different materials have different dielectric properties. The CR30-15AO provides sensitivity adjustment so the sensor can be configured for the target material and operating conditions.

6. Direct AC Operation

The 100 to 240 VAC AC 2-wire design is useful in applications where an AC switching sensor is required without the need for a separate 24 VDC sensor power supply.

D. Suitable Buyers

The Autonics CR30-15AO is suitable for industrial users who require reliable detection of metallic or non-metallic materials.

Typical buyers include:

Machine Manufacturers

OEM machine builders can use the sensor for object presence, position and material detection.

Industrial Automation Companies

System integrators can use the CR30-15AO in automated machines and process control applications.

Packaging Industry

Suitable for detecting containers, plastic components, packaging materials and product presence.

Food and Grain Processing Industry

The sensor can be considered for presence and level detection of grains, powders and similar bulk materials where the application conditions are compatible.

Water and Liquid Handling Systems

It can be used for presence or level detection applications involving water and other suitable liquids.

Plastic Processing Industry

Suitable for detecting plastic components, pellets or material presence in machinery.

Material Handling Plants

The sensor can assist with object detection, bin monitoring, hopper level monitoring and automated material movement.

Control Panel Builders

Panel builders and automation companies requiring an AC 2-wire capacitive proximity sensor can use the CR30-15AO for compatible control applications.

Maintenance and MRO Teams

It is suitable as a replacement or maintenance spare for industrial machines already using the CR30-15AO or a compatible M30 capacitive proximity sensor.

Frequently Asked Questions

1. What is the Autonics CR30-15AO?

The Autonics CR30-15AO is an M30 cylindrical capacitive proximity sensor designed to detect metallic and non-metallic materials without physical contact.

2. What is the sensing distance of CR30-15AO?

The rated sensing distance is 15 mm.

3. What is the power supply of Autonics CR30-15AO?

The CR30-15AO operates on 100 to 240 VAC.

4. Is CR30-15AO a 2-wire sensor?

Yes. It is an AC 2-wire capacitive proximity sensor.

5. What is the output of CR30-15AO?

The CR30-15AO has a normally open control output.

6. Is CR30-15AO an inductive or capacitive sensor?

The CR30-15AO is a capacitive proximity sensor.

7. Can CR30-15AO detect non-metallic materials?

Yes. Capacitive sensing allows it to detect various materials including plastic, water, stone, grains and other suitable non-metallic materials, as well as metal.

8. Can the CR30-15AO detect water?

Yes. The CR Series is designed to detect materials including water. Actual sensing performance depends on installation conditions, container material, distance and sensitivity adjustment.

9. Can CR30-15AO detect plastic?

Yes. It can detect suitable plastic materials because it operates using capacitive sensing rather than being limited to metallic targets.

10. Can CR30-15AO detect grain?

Yes. Grain detection is one of the applications suitable for capacitive proximity sensing.