Editorial Technical Reference

Proximity Sensor

This page explains how Proximity Sensor is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Inductive proximity sensor for metal target detection, M18 housing, 2–8 mm sensing distance, 10–30 V DC, IP67.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Proximity Sensor

Definition
This proximity sensor is a component for machinery and equipment manufacturing, designed to detect the presence or absence of metal objects without physical contact. It operates on the eddy current principle: an internal oscillator generates a high-frequency electromagnetic field at the sensing face. When a conductive target enters this field, eddy currents are induced, damping the oscillation. The sensor's electronics evaluate this change and switch the output state accordingly. The sensor is housed in a cylindrical M18 body made of PBT (flame retardant V0), with a 4-pin M12 connector for electrical connection. It is available with a nominal sensing distance of 2–8 mm for a standard target, as defined by IEC 60947-5-2. The supply voltage range is 10–30 V DC, with reverse polarity protection. The output can handle a maximum continuous current of 200 mA, with a voltage drop of ≤1.5 V at rated output. The switching frequency is up to 500 Hz for DC models. Repeat accuracy is ≤5% of sensing distance. The operating temperature range is -25 to 70 °C, with extended range available. The protection class is IP67, meaning dust-tight and protected against immersion up to 1 meter. This sensor is suitable for position detection, part presence, and counting applications in automated machinery. It is not a safety device unless specifically certified. For proper selection, verify the sensing distance, target material, and environmental conditions. Always confirm model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges for the product family.
Working Principle
The sensor uses an inductive sensing principle. An oscillator creates a high-frequency electromagnetic field at the sensing face. When a metal target approaches, eddy currents are induced in the target, which absorb energy and reduce the amplitude of oscillation. The sensor's trigger circuit detects this damping and changes the output state. The sensing distance depends on the target size, material, and shape. The sensor is designed for non-contact detection of metallic objects, providing a digital output signal. It is not affected by non-metallic materials such as plastics or wood. The output is typically a normally open or normally closed transistor switch, depending on the model. The sensor must be installed with proper clearance from other metal objects to avoid false triggering. The operating principle is based on electromagnetic induction, which is reliable and maintenance-free under normal conditions.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Sensing Distance2–8 mmNominal sensing distance for standard targetIEC 60947-5-2
Supply Voltage10–30 V DCReverse polarity protectedIEC 60947-5-2
Output Current≤200 mAMax continuous load
Voltage Drop≤1.5 VAt rated output current
Switching Frequency≤500 HzFor DC models
Repeat Accuracy≤5 %Of sensing distance
Operating Temperature-25–70 °CExtended range availableIEC 60068-2-1/2
Protection ClassIP67Dust-tight and immersion up to 1 mIEC 60529
Housing MaterialPBTFlame retardant V0UL 94
Connection TypeM124-pin connectorIEC 60947-5-2
Weight≤50 gFor M18 housing

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
other spec: Detection range: 2-15 mm, Response time: <1 ms, IP67 rating
temperature: -25°C to +85°C
Media Compatibility
✓ Metals (steel, aluminum) ✓ Plastics (PVC, polycarbonate) ✓ Liquids (water, oils)
Unsuitable: Highly conductive or magnetic slurries with >40% solids concentration
Sizing Data Required
  • Required detection distance (mm)
  • Target material composition
  • Required mounting configuration (flush/non-flush)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sensor Drift/Calibration Loss
Cause: Environmental factors such as temperature fluctuations, vibration, or contamination altering the sensor's sensing distance or output characteristics over time.
Electrical Failure
Cause: Moisture ingress, corrosion, or voltage spikes damaging internal circuitry, wiring connections, or the sensing element.
Maintenance Indicators
  • Intermittent or erratic operation (e.g., inconsistent detection, false triggers) indicating potential sensor drift, contamination, or electrical issues.
  • Visible damage or contamination on the sensor face (e.g., cracks, buildup of dirt, oil, or metal shavings) obstructing the sensing field.
Engineering Tips
  • Implement regular calibration checks and environmental monitoring (e.g., temperature, humidity) to detect drift early and adjust mounting or shielding as needed.
  • Use proper sealing (e.g., IP-rated enclosures), surge protection, and secure wiring practices to prevent moisture ingress, electrical damage, and vibration-induced failures.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 13849-1: Safety of machinery - Safety-related parts of control systems IEC 60947-5-2: Low-voltage switchgear and controlgear - Proximity switches EN 60947-5-2: Low-voltage switchgear and controlgear - Proximity switches (CE marking reference)

Quoted from the published standard.

Manufacturing Precision
  • Sensing distance tolerance: +/-10% of nominal value
  • Housing dimensions: +/-0.5mm for standard plastic enclosures
Quality Inspection
  • Electrical function test: Verification of switching characteristics and response time
  • Environmental test: IP rating verification (dust/water ingress protection)

Manufacturers of Proximity Sensor

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

DEGSON
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
HEBAI
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Frequently Asked Questions

What is the sensing distance of this proximity sensor?

The nominal sensing distance is 2–8 mm for a standard target, as per IEC 60947-5-2. The actual sensing distance depends on the target material, size, and shape. Always verify the effective sensing distance for your specific application with the manufacturer.

Can this sensor detect non-metal objects?

No, this is an inductive proximity sensor and it only detects conductive (metal) targets. Non-metallic materials such as plastics, wood, or ceramics will not be detected.

What is the protection class of this sensor?

The protection class is IP67 according to IEC 60529, meaning it is dust-tight and protected against immersion in water up to 1 meter depth for a limited time. This makes it suitable for harsh industrial environments.

Is this sensor suitable for safety applications?

This sensor is not certified as a safety component unless explicitly stated by the manufacturer. For safety-related functions, use sensors that meet relevant safety standards and have appropriate certifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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