46007-125-50 LVDT Linear Position Transducer Unit

Module Feature

46007-125-50 is aerospace-grade LVDT linear variable differential transformer position transducer. Model decoding: 46007 = base part series; 125 = 125 mm full stroke; 50 = 50 mV/V sensitivity specification. It is contactless inductive measurement principle, no mechanical wear, high reliability for airborne flight control, hydraulic actuator, fuel valve, thrust reverser position feedback. Sealed metal housing, resistant to vibration, shock and wide temperature cycle, widely used on commercial and military aircraft hydraulic control assemblies.

Working principle

Excitation AC signal supplies primary coil. When the internal movable core moves along stroke, mutual inductance between primary and two secondary coils changes. Secondary coils output differential AC voltage proportional to core displacement. Signal conditioning circuit converts the differential signal into linear position feedback, sent to flight control computer for closed-loop position regulation. Non-contact structure eliminates friction wear.

Onboard components

Primary excitation coil, two matched secondary induction coils, free-moving magnetic core, hermetically sealed stainless steel housing, coil bobbin, insulated lead wire assembly, threaded mounting fitting, core extension rod.

LED indicators

No built‑in LED indicators. Status and measurement data are acquired by external signal conditioner or flight control DAU.

Hardware self‑diagnosis

LVDT itself has no electronic self-check circuit. Upper controller monitors excitation loss, signal amplitude out-of-limit, phase abnormality to judge open circuit, short circuit or core jamming fault.

Programming software

No dedicated configuration software. Gain and zero calibration are finished on matched LVDT signal conditioner module.

Electrical & Process Parameters

Model:46007-125-50 Brand:Aerospace OEM Device type:Hermetic Sealed LVDT Linear Position Transducer Full stroke:125 mm Sensitivity:50 mV/V Excitation:Typically 2.5 kHz AC Output:Differential AC Measurement principle:Contactless LVDT inductive Function:Linear position feedback for aircraft hydraulic actuator, control valve and flight control system

Mechanical & Structure

Mounting:Threaded flange / end thread mounting Protection class:Hermetically sealed aerospace grade Housing:Stainless steel hermetic enclosure

Environmental

Operating temperature:-55℃ ~ +125℃ Storage temperature:-60℃ ~ +135℃ Ambient humidity:5~95% non‑condensing Certification:Aerospace vibration & shock compliance Status:Airborne flight control spare sensor

Installation

Fix LVDT body on fixed reference bracket, connect core rod to moving actuator feedback arm. Route shielded cable to LVDT signal conditioner. Perform zero and span calibration at mechanical travel limit points before commissioning.

Interface

Three-wire excitation and differential secondary signal shielded cable interface, threaded mechanical mounting interface.

Diagnostic

No output signal:Excitation missing or coil open circuit. Unstable jumping reading:Shielding damage, loose wiring or core touching internal bobbin. Non-linear feedback:Mechanical binding of core rod, misalignment between core and coil axis.

Product Brief

46007-125-50 hermetic sealed aerospace LVDT position transducer, 125mm stroke, 50mV/V sensitivity, non-contact linear position feedback sensor for aircraft hydraulic actuator and flight control valve closed-loop control.