SLS095/10 is designed to provide maximum performance benefits within an extremely compact body diameter of 9.5mm, with stroke length of 10mm. The miniature size of this sensor makes it ideal for applications in robotics, animatronics, medical equipment and motorsport data acquisition.
This linear displacement sensor by Penny+Giles is a potentiometer whose wiper moves along with an axis guided by the sensor's body. By fixing both ends of the potentiometer to the sides of a crack, you can measure variations in crack width by reading the voltage at the wiper.
Linear Displacement Sensor Features
Hybrid track potentiometers feature a high wiper contact resistance, therefore operational checks should be carried out only in the voltage divider mode. Hybrid track potentiometers should be used only as voltage dividers, with a minimum wiper circuit impedance of 100x track resistance or 0.5MΩ (whichever is greater). Operation with wiper circuits of lower impedance will degrade the output smoothness and affect the linearity.
- Self-aligning Bearing Mount
- Electrical stroke: 10mm
- Sensor resistance: 0.4kΩ ±15%
- Linearity: ±0.5%
- Resolution: Depends on usage (10µm imposed by the ADC on a Waspmote)
- Supply Voltage: +8.9V max
- Power Dissipation (20°C): 0.2W
- Operating Temperature: -30 to +100 °C
- Sealing: IP50
- Shaft Seal Life: 20 million operations
- Shaft Velocity Limit: 2.5 meters per second
Compatible with Waspmote This sensor can be used in a Waspmote wireless sensor platform by connecting it to the Waspmote Smart Cities Sensor Board.
When used with Waspmote, this sensor is configured as a voltage divider, with one of the ends sourced from a 3V supply, the other end grounded, and the wiper connected to the ANALOG7 input of the Waspmote's analog-to-digital converter. This provides a resolution of approximately 11µm. The supply voltage comes from a solid-state switch controlled by the DIGITAL1 pin.