Overview
The Turck 1644140 (Ni8U-M12-AP6X-H1141) is a robust inductive proximity sensor engineered for reliable metal detection in industrial automation systems. With an M12 x 1 threaded barrel connector, this sensor delivers contactless, wear-free detection across all ferrous and non-ferrous metals at a rated 8mm switching distance.
Key Features
- uprox® Factor 1 Technology: Detects all metals uniformly at the same switching distance; resistant to magnetic field interference
- Non-flush Mounting: M12 x 1 threaded barrel with chrome-plated brass housing for corrosion resistance
- PNP 3-Wire Output: NO (normally open) contact configuration with DC-rated switching
- IP68 Protection: Fully sealed against dust and moisture for harsh industrial environments
- Extended Operating Range: –25 to +70°C ambient temperature with high-frequency switching capability
- Compact & Durable: Weighs only 0.06 lb; resistant to vibration (55 Hz, 1mm) and shock (30 g, 11 ms)
Technical Specifications
The sensor meets stringent industrial performance standards:
- Supply Voltage: 10–30 VDC
- Rated Switching Distance: 8 mm
- DC Rated Current: ≤200 mA
- Hysteresis: 3–15%
- Output Type: PNP, NO contact, 3-wire
- Connector: M12 x 1 male, flange-mount
- Operating Temperature: –25 to +70°C
- Protection Class: IP68
- Max Tightening Torque: 10 Nm
- Vibration Resistance: 55 Hz (1 mm)
- Shock Resistance: 30 g (11 ms)
Typical Applications
The Turck 1644140 is widely deployed in:
- Conveyor systems and material handling automation
- Packaging machinery for part detection and sorting
- Assembly line position verification and count sensing
- CNC machine tool workpiece detection
- Process control in pharmaceutical and food manufacturing
- Automotive production line metal-part detection
Compatibility & Replacements
Compatible With
- PLC inputs and distributed I/O modules supporting 10–30V DC sensors
- Industrial controllers from Allen-Bradley, Siemens, Mitsubishi, Omron, and Schneider Electric
- M12 sensor harnesses and quick-disconnect cables (standard 3-pin connectors)
- Mounting brackets and clamps designed for M12 threaded-barrel sensors
Replaces / Drop-In Replacement For
- Turck Ni8U-M12-AP6X-H1141 (same model number)
- Compatible with other Turck Ni8 8mm Factor 1 sensors in M12 configuration
- Verify exact interchangeability with your system integrator for custom wiring or application-specific mounting
Works With
- Standard PLC analog and digital I/O cards
- M12 A-code connectors and cabling infrastructure
- Industrial control software and HMI platforms
- Turck sensing accessories: mounting brackets (QM-12, MW12), clamps (BST-12B, BSS-12), and M12 connection cables (RKC4T series)
