Technical Overview

The Omron E2K-C25ME1 2M is a high-performance, long-distance capacitive proximity sensor designed to detect both metallic and non-metallic objects. Featuring a 34 mm cylindrical heat-resistant ABS resin housing, it offers an adjustable sensing distance of 3 mm to 25 mm. This unshielded sensor operates on a 12 to 24 VDC power supply and provides an NPN normally open (NO) output with a 200 mA switching capacity. With a 70 Hz response frequency, an IP66 environmental protection rating, and the ability to detect materials such as water, oil, plastic, wood, and glass, it is highly suited for non-contact liquid level monitoring, bulk solid detection, and automated material handling.

Key Features

Adjustable sensing distance from 3 mm to 25 mm for precision application tuning
Detects non-metallic objects including liquids, plastics, glass, and wood
Durable, heat-resistant ABS resin housing measuring 34 mm in diameter
IP66-rated enclosure provides robust protection against dust and water jets
DC 3-wire NPN-NO (Normally Open) output with 200 mA maximum load current
Pre-wired with a 2-meter PVC-insulated cable for flexible installation
Integrated red LED visual position indicator for real-time status monitoring
Operates reliably in extreme ambient temperatures ranging from -25°C to +70°C

Technical Specification Matrix

Parameter	Value
Sensing Distance	25 mm (Adjustable 3 to 25 mm)
Output Type	DC 3-Wire, NPN-NO (Normally Open)
Supply Voltage	12 to 24 VDC (10 to 40 VDC operating range)
Switching Capacity	200 mA max.
Response Frequency	70 Hz
Housing Size / Dimensions	34 mm diameter (Cylinder Type)
Material	Heat-resistant ABS resin
Ingress Protection	IP66 (IEC)
Connection Method	Pre-wired, 2m PVC cable
Operating Temperature	-25°C to 70°C

Industrial Applications

1. Non-Invasive Fluid Level Monitoring in Plastic Tanks

In chemical dosing and water treatment systems, monitoring fluid levels through an opaque non-metallic tank is a major challenge. The E2K-C25ME1 2M can be flush-mounted against the exterior of plastic or glass tanks. With its adjustable sensitivity and 25mm maximum range, it penetrates the tank wall to reliably detect the dielectric constant of the liquid inside.

Problem Solved

Eliminates the need for invasive probes or float switches, preventing chemical contamination and sensor corrosion. The IP66 rating ensures the sensor withstands exterior washdowns.

Capacitive ProximityDielectric DetectionIP66 WashdownNon-Contact Level Switch

2. Wood and Plastic Pallet Detection on Conveyor Lines

Automated material handling systems often process wooden or plastic pallets that are completely invisible to standard inductive sensors. The Omron E2K-C25ME1 features a generous 25mm sensing distance, allowing it to be safely recessed below conveyor rollers to detect the presence of passing non-metallic pallets and output a precise NPN signal to the PLC.

Problem Solved

Replaces fragile optical sensors that frequently fail due to warehouse dust accumulation, and overcomes the metallic-only limitation of traditional inductive sensors.

Material HandlingNon-Ferrous DetectionNPN Normally OpenLogistics Automation

3. Granular Material Level Control in Injection Molding Hoppers

Plastic extrusion and injection molding machines require a steady feed of plastic pellets. Mounted directly to the side of a sight-glass or non-metallic hopper wall, the E2K-C25ME1 2M capacitive sensor detects the presence of plastic granules. Its 70 Hz response frequency ensures immediate detection as the bulk solid level drops below the sensor threshold.

Problem Solved

Prevents equipment dry-runs by reliably detecting granular non-metallic materials, automatically triggering a vacuum refill system exactly when the hopper reaches a critically low level.

Bulk Solid DetectionHopper Level ControlExtrusion Automation70 Hz Response Frequency

Omron E2K-C25ME1 2M Capacitive Proximity Sensor

Omron E2K-C25ME1 2M Capacitive Proximity Sensor

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Non-Invasive Fluid Level Monitoring in Plastic Tanks

2. Wood and Plastic Pallet Detection on Conveyor Lines

3. Granular Material Level Control in Injection Molding Hoppers