The Leuze IS 218MM/2NO-8N0 (Part Number: 50109698) is a premium non-contact inductive proximity switch belonging to Leuze electronic's standardized Series 218 (Germany). Housed in a heavy-duty M18 cylindrical nickel-plated brass casing, this sensor provides precise, reliable metallic object detection and position verification across challenging factory automation lines.

KEY PRODUCT FEATURES AND OPERATIONAL ADVANTAGES:
1. High-Frequency Inductive Eddy Current Principle – Wear-Free Operation:
Operates via electromagnetic field damping when conductive target metals (ferrous or non-ferrous) enter the active sensing zone. Provides 100% non-contact, wear-free sensing completely immune to mechanical friction, machine grease, cutting coolants, dust, or ambient light.
2. Extended 8 mm Operating Range (Non-Embedded / Non-Flush Design):
Provides an extended nominal sensing range Sn of 8 mm (assured operating range Sa: 0 to 6.4 mm). The non-flush mechanical installation broadens the electromagnetic active zone, allowing the sensor head to be positioned safely away from moving mechanical parts to prevent impact damage.
3. Ultra-Fast 2,000 Hz (2 kHz) Switching Frequency:
Features a rapid 2 kHz switching rate, making it ideally suited for high-speed gear tooth counting, camshaft rotation monitoring, conveyor parts indexing, and high-frequency tachometer applications.
4. Superior Thermal Stability & 900-Year MTTF Reliability:
Engineered with high repeatability (< 5%) and minimal temperature drift (< 10% over the full operating span). An outstanding Mean Time To Failure (MTTF) of 900 years guarantees dependable 24/7 industrial performance with zero maintenance.
5. Nickel-Plated Brass Shell with PBT Optical Sensing Face:
The precision-machined M18x1 mm threaded sleeve is crafted from nickel-plated brass, paired with a chemical-resistant Polybutylene (PBT) sensing cap. Rated IP67 for water and dust ingress protection, it operates reliably across -25 °C to +70 °C.
6. Comprehensive Protective Electronics & Yellow Status LED:
Features built-in output short-circuit protection, reverse power polarity protection, and inductive transient suppression. A bright yellow status LED at the rear provides clear visual feedback on switching status during installation and field diagnostic checks.

TYPICAL INDUSTRIAL APPLICATIONS:
• CNC Machine Tools & Machining Centers: X/Y/Z-axis end-of-travel limit detection, home position referencing, and hydraulic chuck clamping confirmation.
• Automated Conveyor & Packaging Lines: Metal parts counting, aluminum can sensing, and metallic component carrier tracking.
• Automotive Manufacturing & Robotic Welding: Screw/nut verification, steel stamping presence, and robotic fixture clamping confirmation.
• Metal Stamping & Plastic Injection Molding: Die open/close limit monitoring and pneumatic/hydraulic cylinder position sensing.

• Manufacturer: Leuze electronic
• Part Number / Model: IS 218MM/2NO-8N0
• Order Number (Part no.): 50109698
• Series: Series 218 (Standard Cylindrical M18)
• Brand Origin: Germany
• Sensor Type: Inductive proximity switch
• Housing Design: Cylindrical threaded
• Dimensions (Diameter x Length): Ø 18 mm x 52 mm
• Thread Size: M18 x 1 mm
• Installation Type: Non-embedded / Non-flush
• Nominal Operating Range Limit (Sn): 8 mm
• Assured Operating Range (Sa): 0 ... 6.4 mm
• Standard Target Plate: 24 x 24 mm², Fe360 steel
• Material Correction Factors:
  - Fe360 Steel: 1.0
  - Stainless Steel: 0.7
  - Brass: 0.5
  - Aluminum: 0.4
  - Copper: 0.4
• Switching Hysteresis: 10 %
• Repeatability: Max. 5 % (at Ta = 23 °C ± 5 °C)
• Temperature Drift: Max. 10 % (over entire operating range)
• Max. Switching Frequency: 2,000 Hz (2 kHz)
• Readiness Delay: 60 ms
• Supply Voltage (UB): 10 ... 30 V DC (Residual ripple 0 ... 20%)
• Open-Circuit Current: 0 ... 10 mA
• Digital Switching Outputs: 1 output
• Switching Element: Transistor NPN
• Switching Principle: NO (Normally Open)
• Max. Switching Current: 200 mA
• Voltage Drop: ≤ 2 V DC
• Residual Current: Max. 0.1 mA
• Protective Circuitry: Polarity reversal protection, short-circuit protection, inductive kickback protection
• Status Indicator: 1 yellow LED indicating switching output state
• Connection Type: 2,000 mm (2 m) PVC gray cable
• Number of Conductors: 3-wire (conductor cross section 0.34 mm²)
• Housing Material: Nickel-plated brass
• Sensing Face Material: Polybutylene terephthalate (PBT)
• Net Weight: 112 g
• Degree of Protection: IP 67 (Water and dust tight)
• Protection Class: Class II
• Reliability (MTTF): 900 years
• Ambient Operating Temperature: -25 °C ... +70 °C
• Storage Temperature: -25 °C ... +70 °C
• EMC Standards: IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4
• Product Standards & Approvals: IEC 60947-5-2, cULus Listed