I’m dedicated to industrial sensing that keeps your automation on track. My offerings are built around the Lvdt Working Principle, giving you precise, non-contact position feedback that stands up on the factory floor. An LVDT sensor uses an AC-excited primary and two secondary windings; when you move the ferromagnetic core, the differential voltage changes in proportion to displacement, delivering high resolution, infinite linearity, and excellent isolation. For buyers at Famous Factories, this means consistent data, easy PLC integration, and long service life under heat, dust, and vibration. We ship rugged variants with wide temperature ranges, robust connectors, and EMI resistance, designed for quick mounting and simple in-situ calibration. I also provide calibration certificates, flexible warranty, schedule-based maintenance, and responsive technical support. If you’re sourcing position feedback that reduces scrap and boosts yield, I can tailor the Lvdt system to your machine family and scale with your growth. Let’s optimize your automation with reliability you can trust.
LVDTs are high‑precision, non‑contact displacement sensors that deliver stable, repeatable position data. An excited primary coil induces voltages in secondary windings around a movable core; as the core moves, the differential output changes proportionally, with minimal hysteresis and wear. For global buyers, essential criteria include stroke length, bore size, mounting style, environmental rating, and the electrical interface. The LVDT output is AC and requires a signal conditioner or DAQ to convert it to a DC signal or digital data compatible with PLCs. Consider lead times, spare parts, and compliance (RoHS/CE). Applications span automation, robotics, metrology, CNC tooling, and aerospace test rigs. Benefits include high resolution, long life with no contact wear, rugged performance in challenging environments, and room for customization. A reliable supplier should provide datasheets, calibration certificates, and scalable quantities to match global demand.
| Dimension | Parameter | Typical Value | Notes |
|---|---|---|---|
| Basic principle | Operating principle | Differential transformer principle | Converts axial displacement to a differential AC output using a movable magnetic core. |
| Type | Sensing element | Primary coil and two secondary windings around a ferromagnetic core | Non-contact displacement sensing with linear response. |
| Measurable range | Measurable displacement range | 0 to 50 mm (0 to 2 in) | Range varies with design and construction. |
| Excitation | Excitation | AC excitation, 3–5 Vrms | Typical for standard LVDT signal conditioning. |
| Excitation frequency | Frequency | 2 kHz to 10 kHz | Higher frequencies can improve linearity with heavier core movement. |
| Output after demodulation | Signal output | DC voltage proportional to displacement (post-demodulation) | Requires demodulation circuitry or dedicated LVDT conditioner. |
| Sensitivity | Sensitivity (mV/V/mm) | 4–18 mV/V/mm | Depends on coil geometry and excitation level. |
| Linearity | Linearity | ±0.1% FS typical | Tighter tolerances achievable with precision designs. |
| Hysteresis | Hysteresis | ≤0.05% FS | Low hysteresis for repeatable measurements. |
| Operating temperature | Operating temperature | -40 to +125 °C | Industrial range suitable for harsh environments. |
| Electrical characteristics | Electrical interface | High input impedance; 3-wire or 4-wire configurations | Demodulator or signal conditioner is required to convert AC to DC. |
| Housing | Housing/material | Stainless steel or alloy housing (sealed) | Designed for rugged applications and environmental sealing. |
| Size (typical) | Physical size | Approx. 24 mm diameter × 100 mm length (example) | Dimensions vary; custom options available. |
| Applications | Common applications | Precision displacement sensing, automation, metrology | Used where non-contact, repeatable position measurements are needed. |
| Demodulation method | Signal conditioning | AC demodulation with synchronous detector; DC output after conditioning | Improves signal-to-noise and resolution. |