Force Sensors FSS Series

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The FSS Series Sensors provide precise, reliable force sensing performance in a compact commercial grade package. The sensor features a proven sensing technology that utilizes a specialized piezoresistive micro-machined silicon sensing element. The low power, unamplified, noncompensated Wheatstone bridge circuit design provides inherently stable mV outputs over the force range. Force sensors operate on the principle that the resistance of silicon implanted piezoresistors will increase when the resistors flex under any applied force. The sensor concentrates force from the application, through the stainless steel plunger, directly to the silicon sensing element. The amount of resistance changes in proportion to the amount of force being applied. This change in circuit resistance results in a corresponding mV output level.

The sensor package design incorporates a patented modular construction. The use of innovative elastomeric technology and engineered molded plastics results in load capacities of 4.5/5.5 kg over-force. The stainless steel plunger provides excellent mechanical stability and is adaptable to a variety of applications. Various electric interconnects can accept prewired connectors, printed circuit board mounting, and surface mounting. The unique sensor design also provides a variety of mounting options including mounting brackets, as well as application specific mounting requirements.


  • Compact commercial grade package
  • Robust performance characteristics
  • Adaptable product design
  • Precision force sensing
  • Electrically ratiometric output
  • Extremely low deflection (30 microns typ. at Full Scale)
  • High ESD resistance 10 kV
  • Signal conditioning available
  • Optional terminal configurations


  • Medical infusion pumps
  • Ambulatory noninvasive pump pressure
  • Occlusion detection
  • Kidney dialysis machines
  • Load and compression sensing
  • Variable tensions control
  • Robotic end-effectors
  • Wire bonding equipment