Overview
AKUSENSE MR-F series ferrous metal detection sensors use magnetic sensing technology to detect iron and other ferromagnetic metals without contact, delivering reliable presence detection for automation and safety applications. Available in a cylindrical M10×22.8mm stainless steel (SUS303) housing (MR-F11 series) and a compact rectangular reinforced PBT housing (MR-F2 series), the series covers normally-open and normally-closed versions with optional red LED indicators. With 5μs ultra-fast response, IP67 enclosure rating, 5~24V DC wide operating voltage and built-in reverse polarity / short-circuit protection, they provide stable, durable and maintenance-free performance in demanding industrial environments.
Key Features
- Ferrous Metal Detection — magnetic sensing detects iron and ferromagnetic metals without contact
- NO / NC Versions — normally-open and normally-closed models for different control logic
- Optional LED Indicator — red LED versions (-LED) for clear on-site status display
- Ultra-Fast Response — 5μs response time for high-speed detection
- Stainless Steel Housing — SUS303 cylindrical M10 body for corrosion resistance (MR-F11 series)
- Compact Rectangular Design — 9×14×21mm reinforced PBT housing for space-saving mounting (MR-F2 series)
- Long Sensing Distance — up to 6.0mm for iron block 30×10t (MR-F2 series)
- IP67 Enclosure Rating — dust-proof and water-jet resistant for harsh environments
- Wide Operating Voltage — 5~24V DC for flexible system integration
- Built-in Circuit Protection — reverse polarity and short-circuit protection
Technical Specifications
| Parameter | Specification |
|---|---|
| Working Principle | Magnetic sensor |
| Operation Mode | Normally Open / Normally Closed (by model) |
| Output Mode | NPN |
| Sensing Distance | Iron □20×1t: 2.3mm (MR-F11); Iron □30×10t: 6.0mm, □30×20t: 4.0mm (MR-F2) |
| Response Time | 5μs |
| Operating Voltage | 5~24V DC |
| Output Current | ≤15mA (MR-F11); ≤12mA (MR-F2) |
| No Load Current | ≤8mA (MR-F11); ≤15mA (MR-F2) |
| Operating Temperature | -20℃ ~ 85℃ (No Freezing) |
| Operating Humidity | 20% ~ 80% RH (No Condensation) |
| Housing | Cylindrical (MR-F11); Rectangular (MR-F2) |
| Housing Material | SUS303 (MR-F11); Reinforced PBT (MR-F2) |
| Dimensions | M10×22.8mm (MR-F11); 9×14×21mm (MR-F2) |
| Connection | 1m / 3-wire cable |
| Enclosure Rating | IP67 |
| Vibration Resistance | 10~55Hz, 1.5mm double amplitude, 1h per axis (X/Y/Z) |
| Dielectric Strength | 100V AC at 50/60Hz for 1 min |
| Insulation Resistance | ≥20MΩ / 250V DC |
| Protection Circuit | Reverse polarity / Short-circuit protection |
| Indicator | Red LED (LED versions only) |
Model Selection Table
| Model | Housing | Operation | Indicator | Sensing Distance |
|---|---|---|---|---|
| MR-F11 | Cylindrical M10×22.8mm, SUS303 | Normally Open | No | Iron □20×1t: 2.3mm |
| MR-F11-LED | Cylindrical M10×22.8mm, SUS303 | Normally Open | Red LED | Iron □20×1t: 2.3mm |
| MR-F11-B | Cylindrical M10×22.8mm, SUS303 | Normally Closed | No | Iron □20×1t: 2.3mm |
| MR-F11-B-LED | Cylindrical M10×22.8mm, SUS303 | Normally Closed | Red LED | Iron □20×1t: 2.3mm |
| MR-F2 | Rectangular 9×14×21mm, Reinforced PBT | Normally Open | No | Iron □30×10t: 6.0mm; □30×20t: 4.0mm |
| MR-F2-B | Rectangular 9×14×21mm, Reinforced PBT | Normally Closed | Red LED | Iron □30×10t: 6.0mm; □30×20t: 4.0mm |
Applications
- Ferrous metal presence detection in automated production lines
- Iron part positioning and clamping confirmation in machine tools
- Metal part counting in assembly and sorting systems
- Iron component detection in packaging and material handling
- Safety interlock detection for ferromagnetic metal parts
- General ferrous metal detection in industrial automation
How to Select
- Select housing by installation space
Cylindrical M10×22.8mm SUS303 (MR-F11) for threaded mounting; compact rectangular 9×14×21mm (MR-F2) for space-saving installation. - Select operation mode by control logic
Normally Open (MR-F11 / MR-F2) or Normally Closed (B suffix models). - Select LED version if needed
Add -LED suffix for red LED status indication.
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