AG Measurematics
LVDTSeries AW

Waterproof AC LVDT

Positron Series AW — 22mm Body · ±1 to ±25 mm · Immersion Proof to 2 m

Waterproof AC LVDT — Series AW

Key Specifications

Body Diameter22 mm
Core Rod Diameter6 mm (Stainless Steel)
Displacement Range±1 to ±25 mm
Mechanical Stroke±3 to ±30 mm (model dependent)
Non-Linearity±0.3% FSR (all models)
Excitation2V rms, 1–5 kHz
Sensitivity10–100 mV/V/mm (model dependent)
Operating Temperature0 to 70°C
Temp Coefficient (Zero)<0.01% FSR per °C
Temp Coefficient (Sensitivity)<0.02% per °C
Termination4-wire flying leads
Waterproof RatingImmersion up to 2 m water column depth
Warranty3 Years

Positron Series AW

Overview

The Series AW is a dedicated waterproof AC LVDT designed for applications where the coil assembly is exposed to frequent oil or water splashes, or must operate fully submerged. Rated to 2 metres of water column depth, it handles the harshest environments that standard LVDTs cannot tolerate.

Its annular space can be filled with oil to provide hydraulic damping of core rod movement — a key advantage in vibration-prone or shock-loaded test rigs. Built in a 22 mm stainless steel body with rugged stainless steel conductors, the AW series offers frictionless, infinite-life operation across 5 models from ±1 mm to ±25 mm.

  • 5 models — ±1 mm to ±25 mm
  • Immersion proof up to 2 m water column depth
  • Oil-fillable annular space for core rod damping
  • Rugged stainless steel conductors
  • 0.3% FSR linearity across all models
  • Compatible with standard AC signal conditioners
  • Accessories: fibre-bakelite clamps, hardened & ball-bearing tips
Signal Conditioners →

Models

Available Models

ModelFull Stroke RangeMechanical StrokeBody Length (mm)Sensitivity (mV/V/mm)Linearity (% FSR)
001AW±1 mm±3 mm28100 mV/V/mm±0.3%
002AW±2 mm±5 mm7560 mV/V/mm±0.3%
005AW±5 mm±8 mm9340 mV/V/mm±0.3%
010AW±10 mm±15 mm12325 mV/V/mm±0.3%
025AW±25 mm±30 mm18510 mV/V/mm±0.3%

No radial (R) variant for AW series. Custom stroke ranges available on request.

Use Cases

Applications

Hydraulic & Pneumatic Test Rigs

Measure piston and rod displacement in oil-flooded or high-splash hydraulic test environments where standard LVDTs cannot survive.

Marine & Offshore Instrumentation

Position sensing in submerged or seawater-splash environments up to 2 m depth — suited for tidal gauges and underwater actuator feedback.

Geotechnical Testing (Submerged)

Monitor consolidation settlement and triaxial specimen deformation in water-saturated or fully submerged geotechnical setups.

Industrial Wash-Down Environments

Track actuator and conveyor positions in food processing, chemical plants, and other facilities subject to frequent wash-down cycles.

Damper & Shock Absorber Testing

Oil-immersed deployment for small-stroke damper characterisation — the oil-fillable annular space provides additional hydraulic damping.

Precision Short-Stroke Measurement

High-sensitivity gauging at up to 100 mV/V/mm (001AW) for ±1 to ±5 mm precision displacement tasks in laboratory or automated environments.

Resources

Downloads

Series AW — Waterproof AC LVDT Datasheet

Complete specifications, dimensions, and ordering information (PDF)

Download Datasheet

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HONDA
MRF Tyres
JK Tyres
Birla Tyres
Hero MotoCorp
TVS Motor
Bajaj Auto
Asahi India
Minda Industries
Pirelli
ISRO
Indian Railways
iCAT
Henkel

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