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RVDT Sensors DC/DC - Current & Converter Sensors

±15 VDC or +24 VDC In, VDC or 4-20 mA Out

The Sentech DC/DC RVDT Sensor includes an integrated electronics with an AC/AC coil. DC/DC RVDTs feature the same non-contact type construction and durability, stationary coil and rotating sensing element on the shaft as Sentech’s AC/AC RVDTs. The DC/DC converter sensor shaft is supported at both ends by precision ball bearings (ABEC class 7) minimizing friction in DC current and voltage sensors.

The stable oscillator drives the primary and a precision demodulator and state-of-the-art filter produce smooth DC output voltage. The output unaffected by power supply variations can be connected directly to a meter, op amp or data acquisition board.

Sentech has models with ±15 V DC or 24 V DC input and offers either DC voltage output or 4-20 mA DC current output.

Mechanically capable of rotating continuously, RVDT offers linear measurement up to ±70º. Within ±45º, linearity is less than ±0.5% of Full Scale. There are two linear regions 180º apart. Sentech calibrates one of the two regions and marks its corresponding null position. Every Sentech RVDT is magnetically shielded greatly reducing outside influence on the output.

Sentech also offers different diameter housings for RVDTs from 1” to 1.5” dia. with either aluminum or stainless steel housing. Combined with their rugged construction, Sentech DC/DC RVDTs offer high performance and reliability while resisting the shocks and vibrations occurring in most industrial environments.


  • Different angular ranges
  • Non-incendive units certified to UL, CSA and IECEX scheme and ATEX directive. (Class I, DIV 2, or Zone 2 – ATEX Cat 3 protection for GAS groups)
  • Ingress Protection IP65
  • High Temperature — mil-spec versions up to 125ºC
  • Different supply & output voltage/current schemes
  • Flying leads or connector termination
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Sentech designs and manufactures with ISO 9001:2015, AS9100 Rev D certified quality management system. ANAB accredited.
Most Sentech products meet the following standards and/or certifications:
UL/CSA, ATEX, IECEX, TIIS (Japan), KOSHA / KCA (South Korea), 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 →

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.