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Stretch sensor 4940
For measurement of small movements
Stretch materials up to 30% without permanently deforming.
On both sides copper clips for mounting the sensor on the product with little resistance loss.
Precise movement measuring by changing resistance in the material.
Two types of material; conductive fabric and conductive rubber.
Length of the sensor can be specified on request.
The sensor doesn’t have any sharp edges so it can be used on skin.
Benefits
- Can measure small movements
- Stretch material up to 30% without deformation
- Different materials for different measuring
- Every dimension possible
Applications
- Movement of limbs
- Medical applications
Specifications material
Conductive fabric
| Property | Test value |
|---|---|
| Silver-gray color | Very unique |
| Surface resistivity | <0.5 Ohm-sq. (unstretched) |
| Shielding Effect | 35+ dB: 1-10 GHz |
| Temperature range | -30 °C to 90 °C |
| Thickness | 0,40mm |
| Weight | 4.3 oz/yd² 145 Gr./0.84m² |
| Stretch | ~100% x length; ~65% x width direction |
| Permanent deformation | After ± 30% stretch |
| Standard length | 135 cm (52 inch) wide |
Conductive silicone
| Data | Typical Values |
|---|---|
| Shore A (40-50 range) | 45 |
| Tensile psi (150 minimum) | 185 psi |
| Elongation % (300 minimum) | 350% |
| Compression set % (30 max.) | 21% (70 hours at 100°C) |
| Specific Gravity (1.75-2.25) | 2.08 |
| Volume Resistivity ohm / cm (0.004 max.) | 002 ohm /cm |
| Thermal Stability Range | -60 °C – 220 °C |
Stretch Diagram
Stretch sensor - fabric width
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Grafiek: Stretch sensor - fabric width (63)
Please note : These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.
Stretching sensor - Silicon length
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Grafiek: Stretching sensor - Silicon length (66)
Please note : These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.
Options
Dimensions
| Standard width | |
| 4940-R Rubber | 8 mm |
| 4940-S Stretch fabric | 24,5 mm |
* Other dimensions on request
Personalisation
Custom sizes and shapes can be produced on request and according to your drawing. Send your drawing to request a quote for a custom shape to [email protected].
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