Miniature LVDT Position Sensors

April 11, 2012

Macro Sensors now offers its Miniature AC-Operated LVDT Position Sensors in high pressure and temperature configurations to perform in harsh environments. Vented versions of the CD 375 Series of Miniature LVDTs are also available for operation in pressurized fluids. Offering a lightweight, low mass core and a compact 3/8” diameter, these AC-operated LVDT Position Sensors are ideal for high response dynamic measurement such as valve position and pneumatic cylinder positioning as well as serving as integral parts of small mechanisms which require units to withstand high pressure and high temperature.

Environmentally robust, high temperature and pressure configurations of the CD 375 Series operate in temperature extremes of -65°F to +400°F (-55°C to +200°C) and operating pressures of 35 kpsi.  To accommodate such high pressure, the sensor case is vented to equalize pressure inside and outside the LVDT linear position sensor. Since vent holes in the housing expose the coils inside, fluid must be electrically non-conductive and chemically benign. Of course, many hydraulic oils meet this requirement.  The high temperature ratings are achieved by using internal materials rated for these temperatures. 

 Available in full-scale measurement ranges from ±0.025” (±0.63mm) to ±1.0” (±25.0mm), the CD 375 Series LVDT linear position sensors offer a 50% larger core-to-bore radial clearance (0.012”) than similar sized competitive units.  Customizable with Teflon® bore liners, metric threaded cores, and lead wire exit points, the CD 375 Series LVDTs operate with any conventional differential input LVDT signal conditioners. 

  • perform in harsh environments
  • high response dynamic measurement 
  • operating pressures of 35 kpsi