Foil Type Strain Gauge
DSF Fatigue Test Strain Gauge
These gauges are designed for fatigue tests, and can reach a fatigue life of over 10 million times at a strain level of ±3000 με. Compared to previously (1 million times at ±1500με), these are gauges of exceptionally high durability.
In aviation and other areas, repeated load tests of large elongation of composite materials are conducted. However, it had been necessary to adhere a new strain gauge frequently as a gauge reached its fatigue life. The DSF series greatly reduces time and cost of adhering gauges.
| Gauge pattern | Type | Gauge length (mm) | Gauge width (mm) | Backing length (mm) | Backing width (mm) | Resistance value (Ω) | Gauge factor |
|---|---|---|---|---|---|---|---|
 | DSFLA-2-350 | 2 | 2 | 8 | 3.3 | 350 | Approx. 3.5 |
| DSFLA-5-350 | 5 | 2 | 11 | 3.2 | 350 | Approx. 3.5 |
| Purpose | Lead wires | Lead wire symbol | Operating temperature range (℃ ) |
Gauge type exampled |
|---|---|---|---|---|
| General measurement (no temperature change) | 2-wire parallel vinyl wire | LJC | -20 to +80 ℃ | DSFLA-2-350-3LJC |
| General measurement | 3-wire parallel vinyl wire | LJCT | -20 to +80 ℃ | DSFLA-2-350-3LJCT |
| Medium/high temperature | 3-wire parallel special vinyl wire | LXT | －20 to +150 | DSFLA-2-350-3LXT |
| 3-strand twisted FEP single-core wire | 6FB♦LT | －269 to +200 | DSFLA-2-350-6FB3LT |
* “♦” indicates lead wire length