Keyence EH-290 Non-Shielded Sensor Head 35 mm Range Ferrous Metal Detection

EH-290 Keyence Sensor Head: Unshielded Cylindrical Proximity Sensor

EH-290 is a standard, non-shielded cylindrical sensor head from Keyence. It detects ferrous metals with a stable range of 0 to 35 mm. The maximum detecting distance reaches 70 mm. This makes it a strong fit for industrial automation tasks that need reliable metal detection.

Why Choose EH-290

• Long stable range. The EH-290 offers a stable detecting range of 0 to 35 mm.
• High repeatability. Repeatability is 0.075 mm for precise position feedback.
• Low hysteresis. Hysteresis stays at 0.2 mm for stable switching.
• Rugged enclosure. The IP67 rating resists dust and water in harsh plants.
• Wide temperature window. It works from -10 to +60°C without freezing.
• Ready for global shipping. We ship by FedEx, UPS, or DHL within 12-24 hours.

Technical Data

• Brand: Keyence
• Model: EH-290
• Type: Standard, non-shielded, cylindrical
• Detectable object: Ferrous metals; see characteristics for nonferrous metals
• Standard target: Iron, t=1 mm (0.04″), 150 x 150 mm (5.91″ x 5.91″)
• Stable detecting range: 0 to 35 mm (1.38″)
• Maximum detecting distance: 70 mm (2.76″)
• Hysteresis: 0.2 mm (0.008″)
• Repeatability: 0.075 mm (0.003″)
• Temperature characteristics: ±10% max. of detecting distance at 23°C (73.4°F), within -10 to +60°C (14 to 140°F)
• Enclosure rating: IP67
• Ambient temperature: -10 to +60°C (14 to 140°F), no freezing
• Relative humidity: 35 to 85% RH, no condensation
• Weight: Approx. 650 g, including nuts and 3-m (9.8′) cable

Core Performance You Can Count On

• Measuring range. Stable range is 0 to 35 mm; maximum distance is 70 mm.
• Frequency response. Fast response supports real-time detection on moving metal parts.
• Sensitivity. The EH-290 reacts to ferrous metal targets with consistent output.
• Linearity. Stable output across the working range reduces false triggers.
• Resolution. Repeatability of 0.075 mm supports fine positioning.
• Temperature range. Operates from -10 to +60°C.
• Environmental resistance. IP67 sealing blocks dust and water jets.
• Anti-interference ability. Non-shielded design needs proper spacing to reduce cross-talk.

Installation Guide

• Mount the EH-290 on a rigid bracket to avoid vibration.
• Keep a clear zone around the sensing face for non-shielded types.
• Align the sensor face parallel to the metal target.
• Respect the stable range of 0 to 35 mm for best results.
• Use the included nuts to lock the cylindrical body in place.
• Route the 3-m cable away from high-current lines.

Setup and Maintenance

• Check output with a known iron target before full production.
• Adjust the mounting distance to match your control threshold.
• Clean the sensing face with a soft cloth and mild cleaner.
• Inspect the cable jacket for cuts or abrasion each month.
• Confirm the IP67 seal stays intact after any maintenance.

Compatibility Notes

• Works with common industrial PLC input modules.
• Fits standard cylindrical mounting clamps for this body size.
• Use with Keyence amplifier or controller units that accept this sensor head.
• Confirm input voltage and output type before wiring to your panel.

Certifications and Compliance

• IP67 enclosure rating for dust and water resistance.
• Designed to meet common industrial EMC and safety expectations.
• Check local rules for final machine-level approval.

Package List and Warranty

• 1 x Keyence EH-290 sensor head
• Mounting nuts
• 3-m (9.8′) cable
• 12-month warranty
• Ships in 12-24 hours by FedEx, UPS, or DHL

Expert Review

The EH-290 stands out for its long stable range and fine repeatability. The 0 to 35 mm stable range gives engineers more mounting freedom. The 0.075 mm repeatability suits precision metal detection. The IP67 body handles wet or dusty cells. The main trade-off is the non-shielded design. It needs more clearance than shielded models. For many factory tasks, that is a fair trade for the longer range.

Manager’s Insight

This sensor head cuts setup time on metal positioning jobs. The wide stable range means fewer mechanical changes. The IP67 rating lowers downtime in tough areas. The 12-month warranty and fast shipping reduce spare-part risk. For teams that run mixed metal targets, the EH-290 offers a strong balance of range, precision, and durability.

Best Fit Equipment and Applications

• Press and stamping lines for metal part presence.
• CNC fixtures for tool or workpiece position checks.
• Conveyor systems for ferrous metal counting.
• Robotic cells for end-of-arm metal detection.
• Packaging machines that handle metal caps or clips.
• Automotive assembly stations for bracket verification.

FAQ

What objects can the EH-290 detect?

It detects ferrous metals best. Nonferrous metals need a shorter range. Check the characteristics table for those cases.

How far can it sense a standard iron target?

The stable range is 0 to 35 mm. The maximum distance is 70 mm.

Does it work in wet areas?

Yes. The IP67 rating protects against dust and water jets.

Can I mount it near other sensors?

Yes, but keep extra space. Non-shielded types can interfere with nearby units. Test the gap before full run.

What is the lead time?

We ship in 12-24 hours. We use FedEx, UPS, or DHL.

What if the sensor fails?

It comes with a 12-month warranty. Contact us with your order details.

How do I pick the right model?

Check your target metal, needed range, and mounting space. Pick a shielded type if space is tight. Pick the EH-290 if you need a longer stable range.

Do you offer bulk pricing?

Yes. Email us your quantity and target date. We will send a quote fast.

Can I get help with wiring?

Yes. Send a photo of your panel and sensor cable. Our team will guide you.

Contact Information

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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