The DirectShear® system provides the ability to measure mean and fluctuating wall shear stress, using a flush-mounted differential capacitive sensor. The Capacitive Sensor Unit (CSU) provides low noise power to the sensor head and conditions the analog voltage signal received from the sensor head for output to a data acquisition system. Stand alone and NI PXI compatible CSUs are available.
The flush-mountable design delivers an unprecedented degree of precision and accuracy for both mean and fluctuating wall shear stress measurements. They greatly extend the spatial and temporal resolution capabilities over existing devices, offering exceptional bandwidth and dynamic range.
Key Benefits
- Ability to measure mean and fluctuating wall shear stress
- Time-resolved, one-dimensional, direct shear stress measurements
- Compact, robust sensor package for flush mounting
- From 50 Pa to 5000 Pa range depending on the sensor head
- From 1 mPa to 10 mPa resolution depending on the sensor head
Solution Sheet
Learn more about how the DirectShear® can help you solve your skin friction measurement challenges
Measurement Principle
DirectShear shear stress sensing system represents the current state-of-the-art in wall shear stress measurement technology, using a differential capacitive sensor
Cylindrical package (0041 series) dimensions
- Sensor Head Diameter: 12.70 mm (0.5″)
- Mounting Shoulder Length: 6.35 mm (0.25″)
- Sensor Body (Mounting Shoulder) Diameter: 15.88 mm (0.63″)
- Total Length: 52.30 mm (2″)
- The main body of the sensor head contains a 2 mm x 8 mm keyway for proper alignment with the flow direction.
Low-profile package (0043 series) dimensions
- Sensor Head: 6 mm diameter, 9 mm length
- Sensor Base: 23 mm diameter, 4.3 mm length
- Total Length: 13.3 mm
Sensor specifications
DirectShear® is a registered trademark of IC2. Used with permission. thinkic2.com
