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TWK IW 251/40-0,5 inductive linear displacement transducer
- Hydraulic and pneumatic cylinder position measurement
- Machine manufacturing
- Robotics
- Press and mold machines
- Industrial automation
The TWK IW 251/40-0,5 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. It offers infinite resolution, no hysteresis, and is protected against short circuits and reverse polarity.
- Measuring principle: Inductive half-bridge
- Measuring stroke: 40 mm
- Linearity: ≤ 0.5 %
- Output signal: 0…20 mA or ±10 V DC (calibrated)
- 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: KFN/KHN options
- Special feature: Infinite resolution, no hysteresis, short-circuit and reverse polarity protection