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DC Fastar®

Fast Response, Linear Displacement Transducer

The DC FASTAR® is a fast response, shock resistant, non-contact displacement transducer designed to measure linear displacement (position).

The DC FASTAR® is position transducer consists of a cylindrical body and low mass, aluminum movable core and a compact signal processor connected to the transducer with a 10′ (3m) cable.

A precision variable inductor with a stroke to body length ratio of almost 1:1, DC FASTAR® has a body length approximately half as long as a typical LVDT having a comparable measurement range.

The DC FASTAR® patented signal processor allows high-speed displacement measuring with better precision than other non-contact devices. Developed for use in rugged factory environments, the compact NEMA 4 (IP 65) rated signal processor is placed at or near its transducer, allowing the use of low-cost power and signal lines to run long distances to readout or control devices. It is highly resistant to EMI or RFI interference.

Operating from a single-ended +10 to +36V, units are available with outputs of ±10V DC, 0 to 10V DC or 4-20mA suitable for feeding PLCs, readouts or other control devices.


  • Fast 35 µS response
  • ±10V DC, 0 to 10V DC or 4-20mA outputs
  • Dynamic temperature compensation
  • ±0.15% linearity, (±0.10% optional)
  • +10 to +36V DC input
  • Body length only 1.3” longer than stroke
  • Resistent to External fields (EMI, RFI)
  • Absolute continuous measurement
  • Single coil wound with large gauge wire


  • Monitor high speed motions
  • Works well with long cable runs
  • Stable over a wide temperature range
  • Accurate measurements
  • Suitable for mobile applications
  • Ideal for limited space installaions/span>
  • No shielding required
  • Accurate position at power up
  • Better shock and vibration resistance than LVDT’s


  • Cylinder position feedback
  • Roll position / Gap monitoring
  • Automated production gauging
  • Vibration analysis
  • Robotic motion control
  • X-Y positioning feedback
  • Dancer/Tensioning Rolls
  • Tensile testing equipment
  • Injection molding machines
  • Hydraulic press monitoring
  • Liquid level measurement
  • Valve position monitoring
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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
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All Sentech Inc. products are warranted against defective materials and workmanship. This warranty applies for a period of one year from the date of delivery to the original purchaser. Any product that is found within the one year period not to meet these standards will be replaced or repaired at the discretion of Sentech Inc. No other warranty is expressed or implied. Although Sentech Inc. manufactures its products to exacting specification standards, we assume no responsibility for their misuse. Sentech Inc. accepts no liability for damages, incidental or punitive, in applications using our products. Please note: It is solely the user’s responsibility to properly install and maintain transducers. Sentech Inc. manufactures its products to meet stringent specifications and cannot assume responsibility for those consequences arising from their misuse or unauthorized modification. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.