• Civil Engineering • Food Industry • Naval Industry • Mining Industry Description The piezoelectric Dragonfly® sensor measures dynamic and quasistatic strain. The large bandwidth and high dynamic range enable an exceptionally wide scope of characterization with a single sensor. • Unidirectional strain sensor • High sensitivity • High dynamic range • Wide frequency range • Flexible & conformable • Plug & Play • Compatible with all IEPE acquisition systems • Low noise operation over long cable length • Vibration analysis: diagnosis, modal analysis, product development, design validation, material characterization • Monitoring (SHM, CBM): life-span optimization, predictive maintenance, decision making, tension rod surveillance, wear monitoring • Event detection: shocks, crack initiation, fatigue failure, leaks, cavitation • Quality and process control: in-operation control, safety, yield optimization • Dynamic weighing, counting, load identification, • Human-Machine Interfaces: touch sensitive hard surfaces, gesture recognition Wormsensing reserves the right to make technical changes without notice. Liability for consequential damage resulting from the use of Wormsensing products is excluded. For more details contacts us at [email protected]

Conditions Parameter DGF-UNI- DGF-UNI- DGF-UNI- Units W1204xx-10 W2204xx-10 W3204xx-10 Piezo & Electrical sinus @1kHz, 0.1Vp-p, 25°C Constant current bias 4 mA Temperature sensitivity Transverse sensitivity |Kt| Measurement range Non-linearity Operating temperature range Bandwidth Discharge time constant Constant current bias Voltage compliance Check capacitance Ceq RMS noise [0.02 to 10] Hz RMS noise [10 to 20k] Hz Spectral noise (1 Hz) Spectral noise (10 Hz) Spectral noise (100 Hz) Spectral noise (1 kHz) Spectral noise (10 kHz) Output bias voltage Output impedance (>1kHz) ps/f Hz ps/f Hz ps/fHz...

• It is highly recommended to refer to the Dragonfly® User Manual for the installation: http://www.wormsensing.com/downloads • Avoid contact with the active area before mounting. Manipulate the device using the recommended handling area. • Avoid bending or applying localized pressure to the sensor. Length = 1 M Length = 50 M Length = 100 M Length = 200 M Length = 1 M Length fife 50 M Length = 100 M Length = 200 M Signal conditioning & bandwidth Dragonfly® IEPE complies with all acquisition systems with IEPE inputs. For acquisition systems without IEPE inputs, external IEPE conditioners are available...

Minimal measurable strain Bending radius The minimal measurable strain depends on the acquisition system noise PSD integrated over its bandwidth. In both charge and voltage mode, the noise at low frequency is driven by 1/f flicker noise. Static bending applied to Dragonfly® impacts its measurement range. The sensitive element is designed to sustain ±3000 µƐ and static bending induces a static The wider the bandwidth, the higher the RMS noise. The lower the cutoff frequency, the higher the RMS noise. Refer to the plot below to determine the Dragonfly® IEPE output noise PSD: strain which added...