The Messotron DOE Series Linear Inductive Displacement Transducers (LVDT) represent a top-tier, high-end industrial solution for heavy-duty position tracking and mechanical stroke validation under extreme runtime conditions, thoroughly designed and engineered at Messotron's state-of-the-art production hubs in Germany. This comprehensive sensor line consolidates all variable range models including the DOE 25, DOE 50, DOE 100, DOE 150, DOE 200, DOE 250, DOE 300, DOE 400, DOE 500, DOE 600, DOE 800, and DOE 1000. Operating on the trusted Linear Variable Differential Transformer (LVDT) principle, these heavy-duty devices smoothly translate physical linear reciprocating motions into high-precision electromagnetic data. The core technological advantage characterizing the DOE family is the specialized combination of its unguided armature/core structural configuration and a raw, unconditioned alternating current (AC) output signaling protocol, making these sensors the premier choice for the most hostile operational environments within industrial facilities.

The unguided free-core structural setup permits the magnetic core shaft to travel through the internal hollow core bore without experiencing any physical contact or frictional dragging against the interior stator transformer windings. By completely eliminating internal physical friction and mechanical sliding components, mechanical degradation and element wear are fully avoided, maintaining absolute measurement repeatability over prolonged operating schedules and delivering a near-infinite runtime lifespan. Furthermore, exporting data via raw AC electrical output paths provides the DOE series with exceptional environmental resilience against extreme ambient temperatures and severe mechanical shocks. Because the sensor housing contains no heat-sensitive integrated electronic circuits or semiconductors, it eliminates the risk of component thermal breakdown, making it exceptionally optimized for deployment alongside external carrier frequency signal conditioners and amplifiers positioned safely inside remote central control panels.

The hardware envelope of the Messotron DOE Series features a rigid cylindrical sleeve profile strictly optimized to accommodate broad measurement metrics spanning from a short 25mm up to ultra-long 1000mm (1 meter) total stroke capacities, flawlessly providing maximum structural layout flexibility for automation and control loop design engineers on the factory floor. The sensor shell is machined from heavy-gauge, high-grade stainless steel with a smooth micro finish, achieving strict ingress ratings from IP65 to IP67. This robust structural armor acts as an impenetrable shield safeguarding the highly sensitive internal transformer windings against hostile workshop environments, including abrasive industrial dust, high-pressure fluid sprays, cutting oil mists, ambient condensation, and severe structural vibrations emitted by massive surrounding machinery matrices. The DOE unguided AC sensor family serves as an irreplaceable technical component for closed-loop control loops operating high-pressure gas turbine bypass valves, tracking large hydraulic actuators in hydroelectric dam installations, positioning heavy transfer cars inside foundries, and capturing micro-displacements on industrial kilns subject to severe thermal stretching. Specifying the Messotron DOE Series is the premier choice for facilities seeking uncompromised operational continuity and maximal machinery runtime safety parameters.

• Manufacturer: Messotron
• Country of Origin: Germany
• Product Category: Unguided Free-Core AC-Output Inductive Linear Displacement Transducers (LVDT)
• Consolidated Consolidated Model Registries: Messotron DOE 25, DOE 50, DOE 100, DOE 150, DOE 200, DOE 250, DOE 300, DOE 400, DOE 500, DOE 600, DOE 800, DOE 1000.
• Core Technology: Linear Variable Differential Transformer - Mechanical frictionless non-contact inductive tracking
• Armature Configuration: Free moving unguided magnetic core shaft (Requires external guide mechanics from the host system)
• Electrical Signaling Protocol: Raw unconditioned alternating current AC output (Requires remote external carrier frequency amplifier module for 4-20mA / 0-10V conversion)
• Nominal Linear Measuring Strokes per Model Designation:
  - Model DOE 25: Linear stroke range ± 12.5 mm (Total travel capacity 25 mm)
  - Model DOE 50: Linear stroke range ± 25 mm (Total travel capacity 50 mm)
  - Model DOE 100: Linear stroke range ± 50 mm (Total travel capacity 100 mm)
  - Model DOE 150: Linear stroke range ± 75 mm (Total travel capacity 150 mm)
  - Model DOE 200: Linear stroke range ± 100 mm (Total travel capacity 200 mm)
  - Model DOE 250: Linear stroke range ± 125 mm (Total travel capacity 250 mm)
  - Model DOE 300: Linear stroke range ± 150 mm (Total travel capacity 300 mm)
  - Model DOE 400: Linear stroke range ± 200 mm (Total travel capacity 400 mm)
  - Model DOE 500: Linear stroke range ± 250 mm (Total travel capacity 500 mm)
  - Model DOE 600: Linear stroke range ± 300 mm (Total travel capacity 600 mm)
  - Model DOE 800: Linear stroke range ± 400 mm (Total travel capacity 800 mm)
  - Model DOE 1000: Linear stroke range ± 500 mm (Total travel capacity 1000 mm / 1 Meter travel capacity)
• Full-Scale Linearity Deviation Tolerance: Extremely tight specification standard of ≤ ±0.25% to ±0.5% across total stroke limits
• Thermal Operational Thresholds: Outstanding high-temperature endurance (Standard dải thermal from -40°C to +120°C, optional configurations up to +150°C or higher available)
• Ingress Protection Compliance: Standard IP65 protection rating, hermetically sealed options available for IP67/IP68 classification
• Outer Shell Structural Composition: Heavy-duty premium-grade stainless steel engineered for excellent mechanical and corrosion tolerance
• Electrical Interfacing Layout: Multi-pin heavy-duty industrial screw-threaded connectors or highly shielded molded signal cables
• Optional Mounting Hardware Accessories: Threaded extension rods, rigid cylindrical sensor mounting blocks, external amplifier signal modules