Sentech is a global leader in the design and manufacture of position sensors, including Linear Variable Displacement Transducers (“LVDT”), Rotary Variable Differential Transducers (“RVDT”), FASTAR sensors, HYDRASTAR sensors, signal conditioners, and solenoids for 30+ years.

We specialize in developing custom, tailored solutions for mission-critical applications such as power generation, industrial, and aerospace environments. All units are non-contact and thus offer excellent reliability, performance, and long life.


  • LVDTs - Linear Variable Differential Transformers provide absolute, linear position measurement. Their non-contacting design provides high reliability with no degradation of performance with respect to time or number of cycles of operation. LVDTs are available in AC-operated as well as DC-operated versions.
  • RVDTs - RVDTs, Rotary Variable Differential Transformers, employ the same high-reliability features as the LVDT except provide high precision rotary or angular position measurements. RVDTs are also available in AC or DC-operated versions.
  • FASTAR® - FASTAR® is a variable inductance, non-contacting linear position sensor, featuring very short overall length relative to the measurement range. FASTAR® sensors offer a very fast response to displacement input (up to 15 kHz) making them well suited for dynamic measurements. Units are available with integral or separate signal conditioners.
  • HydraStar® - HYDRASTAR® sensors, like FASTAR® sensors, are a variable inductance position sensor specifically designed for installation into hydraulic or pneumatic cylinders and actuators. The HYDRASTAR® also features short physical length, fast response, and non-contact operation.
  • Special Applications - Sentech specializes in the design and manufacture of position sensors for special or unusual applications. We can supply units having differing package sizes, mounting configurations and electrical characteristics and specifications. Intrinsically Safe units for use in hazardous locations can be provided with certifications for U.S.A., Canada, and Europe.

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Industry-leading manufacturing

Work with an LVDT & RVDT manufacturer that's as reliable as your applications.

Short Lead Times

Best-in-industry lead times for prototype and production units. Delivery dates that are always met.

Experienced Engineering

30+ years design and manufacturing experience of linear position sensing transducers and signal conditioners. Our team has a wealth of experience with industrial, and aerospace transducers.

Quality Service

ISO 9001:2015, AS9100 Rev D certified processes. ANAB accredited transducer manufacturer. Prompt service.

Sentech designs and manufactures with ISO 9001:2015, AS9100 Rev D certified quality management system. ANAB accredited.

Sentech products meet the following standards and/or certifications:

UL/CSA, ATEX, IECEX, TIIS (Japan), KOSHA / KCA (South Korea), CCOE (India), Class 1 / Division 2 for harsh environments with flammable gasses or combustible dusts, IP54/IP65/IP66/IP67, RoHS - Reduction of Hazardous Substances, REACH - Restricted Chemicals List

Learn more about our standards and certifications →