TE Connectivity – Improved technology gives force sensor industry-best measurement stability

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The FC22 from TE Connectivity (TE), a medium-compression force sensor, creates an opportunity for OEMs to develop products for new markets which would previously have been unavailable because of cost and performance constraints.

The FC22 incorporates proprietary microfused technology: this uses micromachined silicon piezo-resistive strain gauges fused with high- temperature glass to a high-performance stainless-steel substrate. This microfused technology has enabled TE to eliminate the age-sensitive organic epoxies that are used in traditional load cells. As a result, the FC22 is able to offer excellent long-term span and zero stability.

The FC22 is supplied with a normalised zero and span to facilitate interchangeability, and implements compensation for changes in zero and span over temperature.

The FC22 measures direct force and is therefore not subject to the lead-die fatigue failure common in competing designs that use a pressure capsule embedded within a silicone gel-filled cavity.

Operating at very low strain values, the FC22 with microfused technology provides an unlimited cycle life expectancy and superior resolution. The device is available with a choice of four full-scale ranges: 0-10lbf, 0-25lbf, 0-50lbf or 0-100lbf.

FEATURES

  • Small size
  • Low noise
  • High reliability
  • Low deflection
  • Low off-centre errors
  • Fast response time
  • Reverse-polarity protected

APPLICATIONS

  • Medical infusion pumps
  • Robotics
  • Variable force control
  • Load and compression sensing
  • Exercise machines
  • Pumps
  • Contact sensing
  • Weighing machines
  • Household appliances

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