AG Measurematics
LVDTSeries ASH

High Temperature AC LVDT

Positron Series ASH — 22mm Body · ±5 to ±100 mm · IP65 · High Temperature

High Temperature AC LVDT — Positron Series ASH

Key Specifications

Body Diameter22 mm
Core Rod Diameter6 mm (Stainless Steel)
Displacement Range±5 to ±100 mm (10–200 mm total stroke)
Non-Linearity0.25–0.4% FSR (model dependent)
Excitation2V rms @ 2kHz sinusoidal
OutputAC Voltage (mV/V)
Operating TemperatureASH-120: up to 120°C / ASH-150: up to 150°C
Protection RatingIP65
Repeatability<0.1% FSR
Output Bandwidth100 Hz
Cable4-core PTFE insulated shielded, 3m
Housing MaterialStainless Steel
Signal ConditionerExternal required (standard ±15V AC conditioners)
Warranty3 Years

Positron Series ASH

Overview

The Series ASH is the high-temperature variant of the Positron AC LVDT family. In an all-stainless-steel construction with IP65 protection, it is designed for continuous operation in elevated ambient temperature environments where standard sensors cannot survive.

Available in two temperature variants — ASH-120 (up to 120°C) and ASH-150 (up to 150°C) — the Series ASH covers ±5mm to ±100mm across 6 standard models. A PTFE-insulated shielded cable is fitted as standard. Requires a standard external signal conditioner (±15V AC, 2V rms @ 2kHz).

  • Two temperature variants: ASH-120 (up to 120°C) and ASH-150 (up to 150°C)
  • IP65 protection rating
  • ±5 to ±100 mm (6 standard models)
  • 22 mm stainless steel body
  • PTFE insulated cable, 4-core shielded, 3m
  • 0.25% FSR accuracy (small range models)
  • Compatible with all standard signal conditioners
  • NABL accredited calibration included
Signal Conditioners →

Models

Available Models

ModelFull Stroke RangeBody Length (mm)Sensitivity (mV/V/mm)Accuracy (% FSR)
005ASH±5 mm (0–10 mm)9314±0.25%
010ASH±10 mm (0–20 mm)1238±0.25%
025ASH±25 mm (0–50 mm)1853±0.25%
050ASH±50 mm (0–100 mm)3372±0.3%
075ASH±75 mm (0–150 mm)4431±0.3%
100ASH±100 mm (0–200 mm)4760.8±0.4%

Mechanical stroke exceeds FSR — see datasheet for details. ASH-120 and ASH-150 temperature variants available for all models.

Use Cases

Applications

Furnace and Kiln Monitoring

Continuously measure displacement of doors, hearth elements, or structural members inside high-temperature industrial furnaces and kilns.

Hot Press Machines

Track ram or platen position in vulcanising presses, laminating machines, and hot-moulding equipment where ambient temperatures routinely exceed 100°C.

High-Temperature Fatigue Test Rigs

Measure specimen deflection in elevated-temperature fatigue testers and creep test machines with accurate, frictionless feedback.

Aero Engine and Turbomachinery Testing

Monitor blade deflection, case distortion, and thermal expansion in aero engine test cells and turbomachinery development rigs.

Subsea Equipment

All-stainless-steel IP65 construction suits subsea and offshore deployment environments where standard sensors would fail.

High-Temperature Industrial Automation

Provide reliable position feedback in hot-rolling mills, glass-forming machinery, and high-temperature process automation systems.

Resources

Downloads

Series ASH — High Temperature AC LVDT Datasheet

Complete specifications, dimensions, and ordering information (PDF)

Download Datasheet

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MRF Tyres
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Birla Tyres
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Minda Industries
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iCAT
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