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Proximity Sensors
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
  • 12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor
12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor

12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor

$20.00-$40.00/ Piece|1 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 100 pieces）
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12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Non-Contact Metal Detection: Detects metal objects via inductive technology with a 21mm sensing range, ensuring precise and reliable operation without physical contact.
  • Versatile Power Compatibility: Operates on 12VDC, making it adaptable to a wide range of electrical systems and control environments.
  • NPN Output & 3-Wire Configuration: Provides stable signal transmission and seamless integration into industrial or automated control circuits.

Key features

  • 1. Material Technology

    • With a durable PBT plastic and metal construction, ensure long-lasting performance in harsh industrial environments compared to plastic-only sensors.

  • 2. Interactive Design

    • With a cylindrical design featuring a central detection hole, achieve precise alignment and easy installation compared to models with less streamlined shapes. The 3-wire NPN configuration simplifies wiring for quick setup.

  • 3. Performance Parameters

    • With inductive detection technology, reliably sense metal objects within standard ranges, offering faster response times than optical sensors in dusty or dirty environments.

  • 4. Scenario Solutions

    • With non-contact operation,

Product details

12VDC NPN 3 Wire Falling Metal Detector Sensor 21mm Ring Proximity Sensor

The 12VDC NPN 3-Wire Falling Metal Detector Sensor is an inductive proximity sensor designed for reliable non-contact detection of metallic objects. Featuring a durable PBT plastic and metal construction, this 21mm ring sensor ensures robust performance in industrial environments. Its 3-wire NPN output configuration and inductive technology enable precise metal detection up to 21mm, making it ideal for automation, manufacturing, and quality control systems.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialPBT plastic + metal housingWithstands harsh environments and vibrations
Voltage12VDCCompatible with standard industrial power supplies
Output TypeNPN (3-wire)Easy integration into PLC or control systems
TechnologyInductiveDetects ferrous/non-ferrous metals without contact
Detection Range±21mm (adjustable via calibration)Precision detection in tight spaces
Protection RatingIP67 (optional upgrade)Operates in wet, dusty, or contaminated areas

Customization guide

Adjustable detection range and mounting options (e.g., threaded, flange, or flush mounts) can be customized to meet specific spatial or environmental requirements.

Get inspired

Use this sensor to automate assembly lines, monitor conveyor belts, or detect metal components in robotics. Its non-contact operation ensures zero wear-and-tear, even in high-cycle applications.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Detection Range±21mm±25mm (+19%)±30mm (+43%)
Response Time1ms0.5ms (50% faster)0.3ms (70% faster)
IP RatingIP65IP67IP69K (dust/water/oil proof)
Operating Temp-10°C to 70°C-25°C to 80°C-40°C to 105°C

Supplier's note

  1. Three Technical Breakthroughs:

    • Inductive Technology: Enables metal detection without physical contact, reducing maintenance.
    • PBT Housing: Offers chemical resistance and thermal stability for long-term reliability.
    • NPN Output Configuration: Ensures seamless compatibility with PLC systems for industrial automation.

  2. Optimal Version Selection:

    • Base Model: Ideal for standard environments (e.g., factory floors) requiring basic metal detection.
    • Advanced Model: Suitable for high-speed applications (e.g., robotics) needing faster response times.
    • Pro Model: Designed for extreme conditions (e.g., food processing, outdoor machinery) with IP69K rating and wide temperature tolerance.

With the Pro Model’s IP69K rating, you can ensure reliable operation in harsh environments like automotive washdown systems. Pair its extended 30mm detection range with its fast 0.3ms response time to automate precision tasks efficiently. For cost-sensitive applications, the Base Model provides a robust entry-level solution with proven reliability.

Frequently asked questions

  • Which 12VDC proximity sensor model is best suited for small machinery automation setups?

  • How do I clean and maintain the 12VDC NPN metal detector sensor to ensure longevity?

  • Why is PBT material used in the 12VDC NPN proximity sensor compared to ABS?

  • Can the 12VDC NPN proximity sensor be customized for specific voltage or output requirements?

  • Is the 12VDC NPN inductive proximity sensor certified for industrial environments?

  • How does the inductive technology of the 12VDC NPN sensor compare to capacitive sensors for metal detection?

  • What are the key maintenance steps for the NPN output type in the 12VDC proximity sensor?

  • Is the 12VDC NPN proximity sensor compatible with standard industrial control systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Detection RangeManufacturing assembly lines21mm (IEC 60947-5-2) ▲19% → Our Advanced: 25mm (▲Extended range for larger parts)Precise non-contact metal detection without physical wear.
Power SupplyIndustrial automation systems12VDC ▲ → Our Advanced: 12-24VDC (▲Wider voltage compatibility)Flexible integration with diverse power sources.
Output TypeDiverse control systemsNPN ▲ → Our Advanced: NPN/PNP selectable (▲Universal PLC compatibility)Adapts to both NPN and PNP control systems.
Material DurabilityHarsh environments (e.g., food processing)IP67 (immersion-resistant) ▲ → Our Advanced: IP68 (▲Submersion up to 3m)Survives water/dust exposure in demanding settings.
Response TimeHigh-speed conveyor belts0.8ms (▲20% faster than industry standard 1ms) ▲ → Our Advanced: 0.5msRapid signal output for real-time precision.Base model may lag in ultra-fast applications.
Operating TemperatureCold storage facilities-20°C to 70°C (▲10°C colder than industry standard -10°C) ▲ → Our Advanced: -30°C to 80°CFunctions in extreme environments like freezers.Base model may fail in arctic conditions; advanced version is costlier.

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