Owing to their convenient size and cylindrical shape, the LB11 and TB21 strain gauges are ideally suitable for measurements in screws and bolts.
円筒形ゲージ（ 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!
| Code | 形状 | Carrier width | 公称抵抗値 | Connection configuration | 計測グリッド長 | 計測グリッド長 | Measuring grid width | Measuring grid width | Carrier length | Carrier width | マウント方式 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-LB11-3/120ZW | Linear, リニア | 6 mm | 120 Ohms, 120 Ohms | Leads, Leads | 3 mm | 0.118 in | 5 mm | 0.197 in | 0.453 in | 0.236 in | Embeddable, 埋め込み |
| 1-TB21-3.3/1000HW | T rosette, T ロゼット | 1.9 mm | 1000 Ohms, 1000 Ohms | Enamelled copper wires, エナメルコートの銅線 | - | - | - | - | - | - | - |
| LB11 - データシート | Data Sheets | English |
| TB21 - データシート | Data Sheets | English |
Certificates and Approvals
| Strain Gauges - 適合宣言 | 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 |
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.
