Technical Specifications Output signal: 1.0 V AC minimum at 100 ft/min surface speed; frequency range: 5 Hz to 15 kHz; operating temperature: -55 °C to +150 °C; enclosure: IP67; thread: M12 × 1.5; housing: 304 stainless steel.
Functional Features Passive operation – no external power; variable reluctance principle; high-temperature rated; corrosion-resistant stainless steel; non-contact measurement.
Application Scenarios Engine crankshaft speed and position sensing, ignition system timing reference, governor speed input, overspeed protection sensor.
Performance Parameters Frequency directly proportional to speed; signal amplitude proportional to speed and gap; vibration resistance: 30 g peak; shock resistance: 100 g peak.
Material Composition 304 stainless steel housing and probe; copper-wound sensing coil; samarium cobalt magnet; high-temperature epoxy potting.
Structural Characteristics Threaded cylindrical probe; hex locknut for gap adjustment; integral high-temperature lead wire; sealed probe tip.
Working Principle As ferrous gear teeth pass the probe tip, magnetic reluctance changes, inducing an AC voltage in the sensing coil. Frequency is proportional to speed, providing both speed and position reference.
Installation Requirements Mount in threaded hole aligned with target gear; adjust air gap to 0.5–1.0 mm; tighten locknut after adjustment; route cable away from high-voltage leads.
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