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Machine Design

Wireless Strain Sensors

ESG-Link energy-harvesting wireless strain sensor modules operate indefinitely — without the need for batteries — by converting cyclic strains into dc power using piezoelectric materials.

The modules feature a precision timekeeper, nonvolatile memory for onboard data logging, and a frequency-agile IEEE 802.15.4 transceiver. Sampling rates, sample durations, sensor offsets, sensor gains and onboard shunt calibration are wirelessly programmable.

MicroStrain Inc., 310 Hurricane Lane, Unit 4, Williston, VT 05495, (802) 862- 6629,

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