Owing to their convenient size and cylindrical shape, the LB11 and TB21 strain gauges are ideally suitable for measurements in screws and bolts.
Cylindrical Gauges (LB11/TB21)
Bolts are a common construction element used to connect various components. The LB11 and TB21 series of cylindric strain gauges with lead wires, have especially been designed to measure strain, force, and vibration in bolts, screws, and other axial construction elements.
They have been equipped with copper leads and can be used directly in pre-drilled bolt elements. For this, a 2 mm drilling in the structure is required. Both, LB11 and TB21, come as a tubular strain gauge that can be used in a temperature range of –200°C to +140°C.
Facilitates strain, force, and vibration measurements in the most confined spaces.
Ideally matched to the needs of the measurement application.
Save your time and try it right away!
| LB11 - Data Sheet | Data Sheets | English |
| TB21 - 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 | Linear, T rosette |
| Measuring grid length | 3 mm |
| Measuring grid length | 0.118 in |
| Measuring grid width | 5 mm |
| Measuring grid width | 0.197 in |
| Carrier length | 11.5 mm |
| Carrier length | 0.453 in |
| Carrier width | 6 mm, 1.9 mm |
| Carrier width | 0.236 in |
| Temperature range | Limited temperature range |
| Nominal resistance | 120 Ohms, 1000 Ohms |
| Gauge factor (measuring grid material) | Constantan (ca 2.0) |
| Temperature response | Ferritic steel (10.8 ppm/K; 6.0 ppm/°F) |
| Maximum elongation | Standard |
| Fatigue life | Standard |
| Connection configuration | Leads, Enamelled copper wires |
| Mounting | Embeddable |
| Grid protection | Open face |
List of accessories available for all variants of this family
| Product Code | Description |
|---|---|
1-EP70
|
Hot curing 2-comp. adhesive EP70 |
1-RMS1
|
Cleaning kit RMS1 |
K-KAB-ML
|
Measurement cable by the meter |
The installation of cylindric strain gauges in bolts differs from conventional installations on flat surfaces. Learn how to integrate this special gauge in a screw.
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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.
