TWK IW 251/20-0,5-KNF-KHN inductive linear displacement transducer

Hydraulic and pneumatic cylinder position measurement
Machine manufacturing
Robotics
Press and mold machines
Industrial automation

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The TWK IW 251/20-0,5-KNF-KHN is an inductive linear displacement transducer operating on the differential choke principle. A mu-metal plunger moves through coils, causing inductance changes that provide precise position feedback. The sensor is encapsulated in a stainless steel housing for protection against vibration, shock, humidity, oil, and corrosive substances.

Measuring principle: Inductive half-bridge

Measuring stroke: 20 mm

Linearity: ≤ 0.5 % (optional ≤ 0.25 %)

Output signal: 0…20 mA or ±10 V DC

Supply voltage: 21.5–32 V DC or ±13–±16 V DC

Operating temperature: -55 °C to +100 °C

Vibration resistance: 20 g rms (50 g peak), 20–2000 Hz

Shock resistance: 250 g SRS, 20–2000 Hz

Protection class: IP66 (IP68 with cable)

Material: Stainless steel housing (1.4305), plunger nickel-iron

Connection: KNF/KHN options

Data Sheet