Subminiature LVDTs for Multipoint High Reliability Measurements

Measurement Specialties, Inc. (NASDAQ: MEAS) has recently designed and brought to production a high temperature version of their subminiature LVDT (Linear Variable Differential Transformer), the highly reliable Model XS-B. This small position sensor has a mere 3/16 inch [4.8mm] diameter with custom design capability to diameters of 1/8 inch [3.1mm]. The XS-B is now available for 430ºF [220ºC] operation in high-temperature applications such as MFC (Multi-Finger Calipers) for oil well casing integrity inspection. Efficiently manufactured under a strict ISO9001 quality system, these LVDTs are high-quality, yet cost effective linear measurement products.

The small diameter of these LVDTs allows for grouping many of them in a very small package for high density surface profile measurements in space restricted applications. The XS-B features a stainless steel housing, electromagnetic shielding, and resistance to shock and vibration. The 36-AWG lead-wires are PTFE-insulated providing resistance to abrasion and chemicals. The standard operating temperature range is -67°F to +302°F [-55°C to +150°C] with 430ºF [220ºC] optional.

Applications include but are not limited to:
  • Servomechanisms
  • Robotics
  • Surfometers
  • Measurement of films/delicate materials 
  • Multi-point measurement of small components
  • Multi-finger calipers for pipe contour inspection
  • Measurements at high displacement speeds


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