Product Overview

The ​IFM NG5003​ is a NAMUR-compliant inductive proximity sensor specifically designed for hazardous area applications. This intrinsically safe sensor provides reliable metal detection in potentially explosive environments, featuring a compact M18 housing and NAMUR output for connection to intrinsically safe barriers and switching amplifiers. Certified for use in gas and dust hazardous areas, it offers exceptional safety and reliability in critical process applications.

Key Features

• ​NAMUR Compliance​ - Designed for intrinsically safe circuits in hazardous areas

• ​Compact Design​ - Short 33mm housing for space-constrained installations

• ​Explosion Protection​ - Multiple ATEX and IECEx certifications for hazardous areas

• ​Wide Temperature Range​ - Operates from -20°C to +80°C

• ​High Protection Rating​ - IP67 rated for harsh industrial environments

• ​Short-Circuit Proof​ - Built-in protection against wiring faults

• ​Fail-Safe Operation​ - Normally closed contact configuration

Technical Specifications

Electrical Characteristics

NAMUR Specifications

• ​Operating Principle​ | Two-wire NAMUR technology

• ​Supply Voltage​ | 8.2V DC with 1kΩ series resistor

• ​Current Signal​ | <1mA (no target), >2.1mA (target detected)

• ​Intrinsic Safety​ | U₀ = 15V, I₀ = 50mA, P₀ = 120mW

• ​Barrier Connection​ | Requires certified intrinsically safe barrier

Performance Data

• ​Sensing Range​ | 8mm ±10%

• ​Hysteresis​ | 1-15% of sensing range

• ​Repeat Accuracy​ | ±10% of sensing range

• ​Response Time​ | <3ms typical

• ​Switching Capacity​ | 30mA DC (non-hazardous area use)

Safety Certifications

Explosion Protection

• ​ATEX Certification:

  • II 1G Ex ia IIB T6 Ga Ta -20...+70°C

  • II 1G Ex ia IIB T5 Ga Ta -20...+80°C

  • II 2G Ex ia IIC T6 Gb Ta -20...+70°C

  • II 2G Ex ia IIC T5 Gb Ta -20...+80°C

  • II 1D Ex ia IIIC T200°C Da Ta -20...+70°C

  • II 1D Ex ia IIIC T200°C Da Ta -20...+80°C

International Approvals

• ​PTB 01 ATEX 2191​

• ​BVS 04 ATEX E 153 X​

• ​IECEx BVS 06.0003X​

• ​TIIS TC16108​

Safety Parameters

• ​Maximum Internal Capacitance​ | 155nF

• ​Maximum Internal Inductance​ | 50µH

• ​Safety Classification​ | SIL compliant

• ​MTTF​ | 4512 years

Mechanical Specifications

Construction Details

• ​Housing Material​ | PBT (Polybutylene Terephthalate)

• ​Thread Size​ | M18 × 1mm

• ​Mounting​ | Non-flush mountable

• ​Included Accessories​ | 2 lock nuts

• ​Cable Length​ | 2 meters

• ​Cable Type​ | PVC cable, 2×0.5mm²

Environmental Protection

• ​Ingress Protection​ | IP67 (dust-tight and waterproof)

• ​Shock Resistance​ | 30g (11ms duration)

• ​Vibration Resistance​ | 10-55Hz (1mm amplitude)

• ​EMC Compliance​ | EN 60947-5-6

Detection Performance

Sensing Characteristics

• ​Target Materials​ | Ferrous and non-ferrous metals

• ​Correction Factors:

  • Steel: 1.0

  • Stainless steel: 0.7

  • Brass: 0.5

  • Aluminum: 0.4

  • Copper: 0.3

• ​Real Sensing Range​ | 8mm ±10%

• ​Accuracy​ | ±10% switch point drift

Applications

The IFM NG5003 is ideal for:

• ​Oil & Gas​ - Hazardous area level and position detection

• ​Chemical Processing​ - Explosive atmosphere applications

• ​Pharmaceutical​ - Process control in classified areas

• ​Mining​ - Underground and surface mining operations

• ​Grain Handling​ - Dust explosion hazardous areas

• ​Paint Manufacturing​ - Solvent and vapor environments

• ​Petrochemical​ - Refinery and processing applications

Installation & Wiring

Electrical Connection

• ​Wiring Configuration​ | 2-wire NAMUR connection

• ​Cable Colors​ | Brown (positive), Blue (negative)

• ​Barrier Requirement​ | Must use certified intrinsically safe barrier

• ​Maximum Cable Length​ | As specified by barrier manufacturer

Mechanical Installation

• ​Mounting​ | M18 threaded mounting

• ​Torque Specification​ | Standard M18 mounting torque

• ​Orientation​ | Any mounting position

• ​Clearance​ | Maintain specified sensing area clearance

Why Choose IFM NG5003?

• ​Explosion Safety​ - Certified for gas and dust hazardous areas

• ​NAMUR Compliance​ - Designed for intrinsically safe systems

• ​Compact Design​ - Short housing for limited space applications

• ​High Reliability​ - 4512 years MTTF for extended service life

• ​Global Certifications​ - ATEX, IECEx, and TIIS approvals

• ​Environmental Durability​ | IP67 protection for harsh conditions

• ​Technical Support​ | Backed by IFM's global expertise

Maintenance & Safety

• ​Regular Inspection​ | Visual check of housing and cable

• ​Functional Testing​ | Verify switching performance

• ​Safety Compliance​ | Maintain intrinsic safety integrity

• ​Barrier Verification​ | Ensure proper barrier installation

• ​Documentation​ | Keep certification documents available