OMRON E2G-M18KN10-WS-C1 2M | 10mm Inductive Sensor In Stock

Key Technical Specifications

Manufacturer: OMRON
Product Type: Inductive Proximity Sensor
Shape & Size: Cylindrical, M18 Thread
Shielding: Unshielded (Non-Shielded)
Sensing Distance: 10 mm
Output Configuration: NPN, Normally Open (NO)
Wiring Type: DC 3-Wire
Cable Length: 2 Meters (Pre-wired)
Supply Voltage: 12 to 24 VDC
Load Current: 200 mA Max
Response Frequency: 0.2 kHz
Protection Structure: IP67 (Waterproof and Dustproof)

Product Introduction

When you are trying to count parts on a fast-moving conveyor or verify a machine limit, you cannot afford a sensor that drifts or gets confused by metal dust. The OMRON E2G-M18KN10-WS-C1 2M is a workhorse built for exactly this kind of standard industrial limit detection. It is an unshielded, M18 threaded inductive sensor that gives you a generous 10mm sensing distance, making it incredibly forgiving when it comes to mounting tolerances and mechanical vibration.I recommend this specific OMRON E2G-M18KN10-WS-C1 2M because it hits the sweet spot of cost and reliability for general automation. The 2-meter pre-wired cable saves you from having to crimp connectors in a dusty panel, and the NPN NO output is the industry standard for sinking logic into most PLCs. Just remember the golden rule of unshielded sensors: the 10mm range is measured against a standard 18x18mm iron target, and the sensing face must be completely clear of any surrounding metal, or it will trigger prematurely.

Quality SOP & Tech Pitfalls

We do not just throw these in a box and hope for the best. Every OMRON E2G-M18KN10-WS-C1 2M goes through a rigorous QA process. First, we do a visual and counterfeit inspection to ensure the OMRON branding and build quality are genuine. Next, we wire it up to a live test bench, apply 24VDC, and pass a steel target across the face to verify the 10mm trigger distance and check the indicator LED. We also use a multimeter to verify the NPN switching logic under load. Finally, it gets sealed in anti-static packaging.Here is a brutal field warning: Unshielded sensors have an electromagnetic field that wraps around the sides of the sensor, not just the face. I once saw a tech mount an unshielded M18 sensor flush inside a steel bracket because he thought the 10mm range would keep it safe. The sensor immediately saw the steel bracket and stayed locked ON. Always respect the “non-detection zone” dimensions in the manual for unshielded types. Also, keep those 2-meter cables away from VFD (Variable Frequency Drive) lines. Inductive noise will make this sensor chatter, and you will waste hours chasing ghosts.

Installation & Configuration Guide

Pre-Installation: ⚠️ CRITICAL: Lock out and tag out the 24VDC power supply before wiring. Take a photo of the old sensor’s wiring and mounting position. Verify you are replacing an NPN NO sensor, as wiring a PNP into an NPN slot will cause a short circuit.
Removal: Unscrew the locknuts and unthread the old sensor. Clean the M18 threaded hole in the machine bracket; stripped threads are the enemy of a secure mount.
Installation: Thread the new OMRON E2G-M18KN10-WS-C1 2M into the bracket. Because it is unshielded, ensure the sensing face is flush or recessed correctly according to the clearance specs. Tighten the locknuts securely to prevent vibration from shifting the sensor over time.
Power-On & Testing: Restore 24VDC power. Watch the yellow indicator LED on the sensor base. Bring a standard steel target to the face and verify it triggers at roughly 10mm. Check your PLC input card to confirm the bit is turning on.

Compatible Replacement Models

✅ Drop-in Replacement: OMRON E2G-M18KN10-WS-C1 5M – Identical sensor, just with a 5-meter cable instead of 2M. Perfect if your panel is further away.
✅ Drop-in Replacement: OMRON E2G-M18KN10-WS-C2 – Identical specs (M18, Unshielded, 10mm), but Normally Closed (NC) output. Use only if your safety logic requires NC.
⚠️ Software/Logic Compatible: OMRON E2G-M18KS05-WS-C1 – Same M18 form factor and NPN NO output, but it is a shielded sensor with a 5mm range. You can use it, but you will need to physically move the sensor closer to the target and re-program any PLC timing that relies on the 10mm distance.

Frequently Asked Questions (FAQ)

Can I use this sensor to detect aluminum or stainless steel?
Technically yes, but be careful. The 10mm sensing distance is rated for standard iron (mild steel). Non-ferrous metals like aluminum and stainless steel have lower magnetic permeability, which reduces the effective sensing distance by up to 30-40%. Always test your specific target material on the bench before installing it in the machine.Is the 2-meter cable long enough to reach my PLC?
Two meters is standard for panel-adjacent sensors. If your PLC is across the room, do not splice and extend the cable yourself. Splices introduce resistance and act as antennas for electrical noise. Buy the 5M version of this exact sensor instead.Why does my sensor trigger when there is no metal nearby?
You are likely experiencing “chatter” from electrical noise or a dirty sensing face. Wipe the face clean with a soft cloth. If it persists, check if the sensor cable is running parallel to a high-voltage VFD cable. Route sensor cables through grounded metallic conduit to block EMI.What happens if I wire the brown and blue wires backwards?
Most modern OMRON sensors have reverse polarity protection, so it won’t instantly fry the internal circuit. However, it will not operate. If you leave it reversed for an extended period under load, you risk damaging the protection diodes. Always double-check your 24VDC polarity before powering up.Can I mount this sensor flush with a steel bracket?
No. The “KN” in the part number means unshielded (non-shielded). The electromagnetic field extends out the sides. If you mount it flush in a steel hole, the steel bracket will act as your target. You must either use a shielded sensor for flush mounting or leave the required clearance space around this unshielded sensor.Does this sensor require a load resistor?
For standard PLC inputs, no. The 200mA max load capacity is more than enough for a PLC input card. However, if you are driving a heavy relay coil or a long cable run, verify the voltage drop across the sensor to ensure the PLC still registers a solid logic “ON” state.