The Messotron DUH Series High-Pressure Resistant Linear Displacement Transducers (In-Cylinder Hydraulic Integrated LVDT Sensors) represent elite-tier position tracking instrumentation engineered and manufactured by Messotron GmbH in Germany, explicitly optimized for deep, integrated (in-cylinder) stroke monitoring inside high-pressure hydraulic cylinders. Within rugged industrial machine designs, external sensor mountings routinely face risks of blunt physical damage or present inefficient footprints. The "H" (High-Pressure / Hydraulic) designator of the DUH lineup thoroughly master this design challenge by allowing direct installation of the pressure-resistant tube assembly and movable magnetic core into the internal hollow bore of the primary hydraulic piston rod. The device boasts an exceptional structural composition capable of enduring relentless continuous running pressures up to 350 bar (and extreme hydraulic transient spike pressures up to 500 bar) without experiencing sealing failure, fluid leakage, or mechanical distortion, maintaining complete system operational safety parameters.

This comprehensive consolidated product catalog fully incorporates standard model configurations tailored for various strokes: DUH 50, DUH 100, DUH 200, DUH 300, DUH 400, and DUH 500. The numerical designations map directly to the transducer's absolute useful linear measuring span formatted in millimeters (mm). Operationally, the DUH Series applies advanced, friction-free Linear Variable Differential Transformer (LVDT) electromagnetic induction principles. A high-permeability internal moving magnetic core moves completely free of mechanical contact centered inside a thick-walled stainless steel pressure tube enclosed by symmetrically balanced differential electrical induction coils. Due to the absence of mechanical contact friction between internal components, the sensor eliminates physical wear, achieves near-infinite structural resolution, and delivers sub-micron non-linearity margins. This durability guarantees uncompromised baseline calibration retention across tens of millions of continuous factory runtime cycles without periodic maintenance.

The immense resilience of the Messotron DUH Series is reinforced by its precision hardware composition. The heavy-duty mounting flange and pressure-retaining outer rod are precision-machined from high-strength industrial stainless steel alloys, delivering superb corrosion immunity against synthetic hydraulic oils, flame-retardant fluids, and aggressive saturated marine environments. The transducers carry high Ingress Protection (IP) ratings on the electrical connection interface, hermetically sealing sensitive inner components from micro-dust and pressure washes. When integrated with specialized electronics (such as the Messotron DPU digital conditioning modules), the configuration achieves high electromagnetic compatibility (EMC), completely neutralizing electrical noise emitted by adjacent high-power industrial hydraulic pumps or variable frequency drives (VFDs). The DUH Series stands as the premium choice for real-time positional control loops on proportional valves, marine steering assemblies, industrial deck crane winch dynamics, plastic injection molding mold clamps, and high-pressure national defense engineering applications.

• Manufacturer: Messotron
• Country of Origin: Germany
• Product Category: In-Cylinder High-Pressure Linear Displacement Transducer / Inductive Hydraulic LVDT Probe
• Integrated Range Models: DUH 50, DUH 100, DUH 200, DUH 300, DUH 400, DUH 500
• Technology Operating Principle: Non-contact Linear Variable Differential Transformer (LVDT) / Inductive Electromagnetic
• Certified Linear Measuring Stroke:
  - DUH 50: 50 mm linear span
  - DUH 100: 100 mm linear span
  - DUH 200: 200 mm linear span
  - DUH 300: 300 mm linear span
  - DUH 400: 400 mm linear span
  - DUH 500: 500 mm linear span
• Rated Continuous Static Pressure (Operating Pressure): 350 bar
• Absolute Destructive Peak Pressure Tolerance: Up to 500 bar maximum transient spike
• Non-Linearity Discrepancy Margin: < ±0.25% full scale standard (Premium high-accuracy versions available down to < ±0.1%)
• Pressure Tube and Mounting Flange Material: High-strength structural Stainless Steel
• Recommended Excitation Frequency Bandwidth: 1 kHz up to 10 kHz (Optimized for DPU series signal conditioners)
• Electrical Connector Protection Enclosure Class: IP65 or IP67 certified industrial standard protection envelope
• Thermal Drift Coefficient: < 0.01% / °K across the full operational bandwidth
• Allowable Operating Media Temperature Range: -20 °C up to +90 °C (Extended high-temperature configuration available up to +120 °C)
• Electrical Interfacing Interconnect: Heavy-duty molded integral cable assembly or rugged industrial quick-disconnect high-pressure Connector setup