Woodward 9905-031K Magnetic Pickup Speed Sensor

Product Brief Introduction Heavy-duty passive magnetic speed pickup sensor for prime mover rotational speed measurement. It generates pulse feedback signal for digital governor and overspeed protection module, suitable for harsh high-vibration industrial prime mover working environment.
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Technical Specifications Passive sensor without external power supply; high-strength threaded metal housing; outputs sine wave pulse signal proportional to rotating speed; wide operating temperature range.

Functional Features Non-contact speed detection; excellent anti-vibration and shock resistance; simple, maintenance-free mechanical structure.

Application Scenarios Heavy-duty gas engine, large diesel genset and industrial turbine speed monitoring and feedback loops.

Performance Parameters Stable and consistent pulse signal output under high vibration operating condition; no wearing moving parts, long service cycle.

Structural Characteristics Threaded metal housing; internal permanent magnet and induction coil assembly; shielded outgoing signal wire to resist field electromagnetic interference.

Working Principle Gear teeth passing the sensor head cause periodic change of magnetic flux, inducing alternating pulse signal in the internal coil. The frequency of the pulse signal corresponds directly to the rotational speed of the prime mover.

Installation Requirements Set the correct air gap between sensor tip and gear teeth as per specification; securely fasten the lock nut to prevent vibration loosening.

Usage Notes Prevent impact damage to the sensitive sensor head during handling and installation; inspect cable insulation and connector tightness during routine maintenance.




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