Due to its tiny size, the strain gauge rosette RF9 in miniature is especially suitable for circuit boards and very small components.
RF (Rosette)
Thanks to its three stacked measuring grids, the smallest version of the RF9 miniature SG rosette is only 5 mm in size. It enables biaxial stress states with unknown principal stress directions to be determined in the most confined of spaces, owing to its small diameter. The SG rosette is, therefore, particularly suitable for measurements on electric circuit boards or especially small components.
The following variants are available:
The miniature rosettes are now also available with geometries that allow for measurements in compliance with the JEDEC/IPC 9704 standard.
If space is a constraint: Analysis of biaxial stress states with unknown principal stress direction in the most confined space
No soldering on the strain gauge required
Save time and start straight away!
| F Series - Data Sheet | Data Sheets | English |
Certificates and Approvals
| Strain Gauges and Accessories - Statement of Compliance | Declaration of Conformity | English |
| Type/technology | Foil strain gauge |
| Application | Stress Analysis / structural testing |
| Geometry | Y rosette |
| Measuring grid length | 1 mm, 1.4 mm, 0.8 mm |
| Measuring grid length | 0.0394 in, 0.055 in, 0.031 in |
| Measuring grid width | 1 mm, 1.4 mm, 0.9 mm |
| Measuring grid width | 0.0394 in, 0.055 in, 0.035 in, 0.039 in |
| Carrier length | 5.2 mm, 6 mm, 5 mm |
| Carrier length | 0.205 in, 0.236 in, 0.197 in |
| Carrier width | 5.2 mm, 6 mm, 5 mm |
| Carrier width | 0.205 in, 0.236 in, 0.197 in |
| Temperature range | Limited temperature range |
| Nominal resistance | 120 Ohms, 350 Ohms |
| Gauge factor (measuring grid material) | Constantan (ca 2.0) |
| Temperature response | Ferritic steel (10.8 ppm/K; 6.0 ppm/°F), Austenitic steel (16 ppm/K; 8.9 ppm/°F), Aluminium (23 ppm/K; 12.8 ppm/°F) |
| Maximum elongation | Standard |
| Fatigue life | Standard |
| Connection configuration | Leads, Integrated solder tabs |
| Mounting | Bondable |
| Grid protection | Covered |
List of accessories available for all variants of this family
RF91 miniature rosette with attached copper wire and ribbon cable
Watch the video and learn how to bond the RF91 miniature rosette on a PCB:
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, MicroStrain and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
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