Technical Specifications Output signal: 0.5 V AC minimum at 100 ft/min surface speed, up to 100 V AC maximum; frequency range: 10 Hz to 20 kHz; operating temperature: -50 °C to +120 °C; enclosure rating: IP67; probe diameter: 11 mm; thread: M16 × 1.5; housing material: 304 stainless steel.
Functional Features Passive operation – no external power required; variable reluctance principle; rugged industrial construction; wide temperature range; corrosion resistant; non-contact measurement.
Application Scenarios Engine flywheel speed measurement, turbine shaft speed sensing, gear tooth speed detection, rotating machinery speed feedback for governors and protection systems.
Performance Parameters Frequency directly proportional to rotational speed; signal amplitude proportional to speed and air 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, epoxy potting, armored cable option.
Structural Characteristics Threaded cylindrical probe body; locknut for gap adjustment; integral cable with lead wires; sealed probe end.
Working Principle As ferrous gear teeth pass the probe tip, the magnetic reluctance of the circuit changes, inducing an AC voltage in the sensing coil with frequency directly proportional to rotational speed and amplitude proportional to speed and air gap.
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