INDUSTRY COMPONENT

Sensing Coil

A sensing coil is an electromagnetic component used in sensing probes/heads to detect changes in magnetic fields, electrical currents, or proximity of metallic objects.

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Component Specifications

Definition
A sensing coil is a wound conductor, typically made of copper wire, that generates or detects electromagnetic fields. As part of a sensing probe or head, it operates based on electromagnetic induction principles to measure parameters like displacement, position, speed, or presence of metallic targets in industrial applications. It converts physical phenomena into electrical signals for processing by control systems.
Working Principle
The sensing coil works on electromagnetic induction: when a metallic object enters its magnetic field, eddy currents are induced in the object, altering the coil's inductance or impedance. This change is measured to detect object presence, position, or properties. In active systems, an alternating current passes through the coil to generate a magnetic field, while in passive systems, it senses external field changes.
Materials
Copper wire (typically enamel-insulated), with core materials like ferrite, iron powder, or air core; encapsulation in epoxy resin or thermoplastic housings for protection.
Technical Parameters
  • Inductance 10 μH to 100 mH
  • Resistance 5 Ω to 500 Ω
  • Wire Gauge AWG 20 to 40
  • Insulation Class Class B to H
  • Temperature Range -40°C to 150°C
  • Operating Frequency 1 kHz to 1 MHz
Standards
ISO 9001, IEC 60034, DIN EN 60529

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sensing Coil.

sensing coil inductive sensor electromagnetic coil proximity sensor industrial sensing coil winding eddy current sensor Sensing Coil in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Sensing Probe/Head

The detection element of a speed sensor that directly interacts with the target to measure rotational or linear velocity.

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Engineering Analysis

Risks & Mitigation
  • Overheating due to excessive current
  • Mechanical damage from vibration or impact
  • Signal interference from electromagnetic noise
  • Degradation from moisture or chemical exposure
FMEA Triads
Trigger: Wire insulation breakdown
Failure: Short circuit or open circuit
Mitigation: Use high-quality insulation materials, perform regular insulation resistance testing
Trigger: Core material saturation
Failure: Reduced sensitivity or nonlinear response
Mitigation: Design with appropriate core material and operating within specified magnetic flux limits

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Inductance tolerance typically ±5% to ±10%, resistance tolerance ±10%
Test Method
Inductance measured with LCR meter at specified frequency; insulation resistance tested with megohmmeter; functionality verified with target simulation in operational environment

Buyer Feedback

★★★★☆ 4.7 / 5.0 (36 reviews)

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Sensing Coil arrived with full certification."

"Great transparency on the Sensing Coil components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

"The Sensing Coil we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."

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Frequently Asked Questions

What is the difference between a sensing coil and a regular coil?

A sensing coil is specifically designed for detection applications, with optimized inductance and frequency response for sensitivity to external objects, whereas regular coils may be for power transfer or filtering.

How do I select a sensing coil for my application?

Consider factors like target material, sensing distance, operating frequency, environmental conditions (temperature, humidity), and required output signal type (analog/digital).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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