簡介
KFWB Series
The surface of the KFWB series foil strain gage is covered with a special waterproof resin.
The waterproof structure enables these gages to serve for outdoor or underwater measurement merely by being bonded to measuring objects.
The surface of the KFWB series foil strain gage is covered with a special waterproof resin.
The waterproof structure enables these gages to serve for outdoor or underwater measurement merely by being bonded to measuring objects.
(The insulation resistance shows virtually no deterioration even after 100 hours of use under an underwater pressure of approximately 10 MPa.)
In addition, the covering resin is flexible enough to enable easy bonding to curved surfaces.
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Contents
When ordering, suffix the lead-wire cable code to the model number with a space in between.
E.g.
For the gage with a vinyl-coated flat 2-wire cable 2 m long
→ KFWB-5-120-C1-11 L2M2R
For the gage with a vinyl-coated flat 3-wire cable 5 m long
→ KFWB-5-120-D17-11 L5M3S
| Materials Resistive element | CuNi alloy foil |
| Materials Base | Polyimide |
| Operating temperature in combination with major adhesives after curing (°C) | CC-33A: -10 to 80ºC CC-36: -10 to 80ºC EP-340: -10 to 80ºC |
| Operating temperature in combination with major leadwire cables (°C) | Vinyl-coated flat cable (L-6, L-7): -10 to 80ºC |
| Self-temperature-compensation (°C) | 10 to 80ºC |
| Applicable linear expansion coefficients (×10-6/℃) | 11, 16, 23 |
| Strain limits at normal temp. (approx. %) | 2.8 |
| Fatigue lives at normal temp. (times) | 3x104 (±1500μm/m) |