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- Dragonfly® DGF-UNI-Wx204xx-10
Dragonfly® DGF-UNI-Wx204xx-10
Dragonfly® DGF-UNI-Wx204xx-10
The Dragonfly® DGF-UNI-Wx204xx-10 is a piezoelectric unidirectional IEPE strain sensor designed to measure dynamic and quasistatic strain. It features a large bandwidth and high dynamic range, making it suitable for a wide range of applications.
Features
- Unidirectional strain measurement
- High sensitivity and low noise
- Wide frequency range and high dynamic range
- Flexible, conformable, and plug & play
- Compatible with all IEPE acquisition systems
- Lead-free
Sectors
- Energy, Aerospace, Automotive
- Civil Engineering, Industry 4.0
- Food Industry, Healthcare
- Transportation, Naval Industry, Mining Industry
Applications
- Vibration analysis and monitoring
- Event detection and quality control
- Dynamic weighing and human-machine interfaces
Technical Data
The sensor is available in three models (DGF-UNI-W1204xx-10, DGF-UNI-W2204xx-10, DGF-UNI-W3204xx-10) with varying sensitivity, measurement range, and bandwidth. Key parameters include:
- Operating temperature range: -55°C to +125°C
- Measurement range: ±3000 με to ±50 με
- Bandwidth: 0.02 Hz to >100 kHz
- Output bias voltage: 12.0 ±2 V
Handling Recommendations
- Refer to the Dragonfly® User Manual for installation
- Avoid contact with the active area before mounting
- Avoid bending or applying localized pressure to the sensor
Signal Conditioning & Bandwidth
The Dragonfly® IEPE sensor is compatible with all acquisition systems with IEPE inputs. It extends the frequency response to very low frequencies and is immune to EMI and triboelectric noise over long cable lengths.
Sensitivity
The sensor's sensitivity is calibrated using a 4-point bending test. The output signal in a bi-axial strain is calculated using a specific formula involving sensitivity, transverse sensitivity ratio, and strain values.
Minimal Measurable Strain
The minimal measurable strain is influenced by the acquisition system noise PSD and bandwidth. The noise at low frequency is driven by 1/f flicker noise.
Fatigue Life
The sensor's fatigue life depends on the applied dynamic strain level, with failure defined as sensitivity outside specifications.
Bending Radius
Static bending affects the measurement range, with a design to sustain ±3000 µƐ. The static strain added to dynamic strain must not exceed this limit.
Reference Selection
The nomenclature for selecting the correct reference includes interface type and flex size, with options for passive and IEPE models.
Catalog excerpts
• 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]
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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...
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• 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...
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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...
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