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Inductive Cylindrical sensors PMS-PKS /...

Inductive Cylindrical sensors PMS-PKS / PMW-PKW Series

The PMS-PKS / PMW-PKW Series are industrial cylindrical inductive proximity sensors available in M12 and M18 housings, rated IP67/IP68, featuring an innovative double enclosure for harsh environments, high-frequency switching, and NO+NC complementary outputs β€” suited for machine-tool, metalworking and rugged automation applications.
Category: Sensors
Brand: Datasensing

Datasensing PMS-PKS / PMW-PKW Series

The PMS-PKS / PMW-PKW Series provide rugged inductive metal-detection solutions engineered for challenging industrial conditions. With shielding and un-shielded variants across M12 and M18 formats, these sensors deliver reliable, high-performance detection in harsh surroundings, such as cutting-oil, immersion, vibration or machine-tool environments. 

Design & Functionality

  • The series features an innovative β€œdouble enclosure” housing, which enhances resistance to mechanical stress and ensures protection in immersion- or coolant-rich environments. 
  • Available in shielded (flush-mount) and un-shielded (non-flush) variants across both M12 (nominal sensing distances ~2 mm / ~4 mm) and M18 (nominal ~5 mm / ~8 mm) sizes β€” giving designers flexibility in installation and target size. 
  • Support for complementary outputs (NO + NC) and both NPN/PNP logic ensures compatibility with varied control systems. 
  • Built for harsh industrial use: IP67 / IP68 protection, high switching frequency (up to ~1.5 kHz), and full electrical protection including reverse-polarity and short-circuit auto-reset. 

(In this context, referring to a consistent detection field rather than literal beams.)

  • These sensors maintain a stable detection zone even in unfavourable mounting conditions, reducing sensitivity to small target misalignment or background metal surfaces. This yields repeatable precision (<5% repeat accuracy)
  • The robust housing resists cutting oil, immersion and coolant infiltration, ensuring detection remains reliable over time.

Beam Pitch Options

(Translated here as selectable sensing distances/resolution, not actual beam pitch.)

  • For M12 shielded: ~2 mm nominal; M12 unshielded: ~4 mm. 
  • For M18 shielded: ~5 mm nominal; M18 unshielded: ~8 mm. 
  • Metal correction factors: example for PKW/0P-2H: copper 0.30 / aluminium 0.37 / brass 0.46 / stainless steel 0.78. 

Intrinsic Synchronism

  • Internal electronics include synchronisation and protection modules, meaning no external synchronising wiring is required β€” simplifying installation and increasing reliability.
  • Time-before-availability is fast (≀ 50 ms typical) so the sensor is ready shortly after power-up. 

Operational Advantages

  • Industrial-Grade Durability: With double-enclosure housing, IP68 sealing and cutting-oil resistance, they are tailored for machine-tool zones, metal-machining cells, immersion or coolant-rich environments. 
  • Flexible Mounting & Target Sizing: Multiple housing sizes (M12, M18), shielded/unshielded options and output logic variants make these sensors adaptable for a wide range of metal-detection tasks.
  • High Performance: High switching frequency, low hysteresis and stable detection field deliver reliable results on conveyors, automatic machines, packaging lines and manufacturing cells.
  • Applications: Ideal for metallic part detection in machine tool environments, metalworking automation, conveyor metal-part presence detection, fluid- or coolant-exposed installations and general manufacturing where harsh conditions, metal targets, and stable precision detection are required.

Technical Specifications

 

Parameter

PMS / PMW Series (M12 shielded/β‰ˆ2–4 mm Sn)

PKS / PKW Series (M18 shielded/β‰ˆ5–8 mm Sn)

Product LinePMS / PMWPKS / PKW
Housing SizeM12 Γ— 1M18 Γ— 1
FunctionInductive Proximity Sensor, cylindrical housingInductive Proximity Sensor, cylindrical housing
Nominal Sensing Distance (Sn)~2 mm (shielded) / ~4 mm (un-shielded)~5 mm (shielded) / ~8 mm (un-shielded)
Standard Target (FE360 steel)12 Γ— 12 mm18 Γ— 18mm (shielded) / 24 Γ— 24mm (unshielded) 
Repeat Accuracy< 5%< 5%
Thermal Drift of Sr< 10%< 10%
Operating Voltage10 … 30 V DC10 … 30 V DC
Switching FrequencyUp to ~2 kHzUp to ~1.5 kHz
Output TypeNPN or PNP, NO + NC complementaryNPN or PNP, NO + NC complementary
Load Current Max≀ 100 mA (M12 shielded) or ≀ 400 mA (M12 unshielded) β‰€ 400 mA (M18 unshielded) 
Leakage Current (No Target)≀ 10 Β΅A≀ 10 Β΅A
Voltage Drop (Output ON)≀ 2 V @100/200 mA≀ 2 V @200 mA
Time Before Availability≀ 50 ms≀ 50 ms
Protection Rating (IP)IP67 / IP68IP67 / IP68
Housing MaterialNickel-plated brass (PMS) or Stainless 303 (PMW)Nickel-plated brass (PKS) or Stainless 303 (PKW)
Operating Temperature Range-25 Β°C … +70 Β°C-25 Β°C … +70 Β°C