Tekscan FlexiForce A301-100 Force Sensor - 0-100 lb Range, 2-Pin Male Square Pin

The sensor acts as a variable resistor. Connect it in a simple voltage divider circuit: one pin to your microcontroller's analog input (via a pull-down resistor, typically 10kΩ to 100kΩ) and the other pin to a logic-level voltage (e.g., 3.3V or 5V). The analog reading will vary inversely with the applied force. Always refer to Tekscan's application notes for optimal resistor selection based on your desired force range.

The Enhanced Stability Series (ESS) uses a specialized pressure-sensitive ink formulation designed to maintain consistent performance in environments with high temperature and high humidity. The standard version is suitable for typical lab and indoor conditions, while ESS is recommended for harsher or more variable environments to ensure long-term measurement stability.

Yes, the sensor can measure forces up to approximately 1000 lbs, but the circuit must be adjusted. To measure higher forces, you need to reduce the drive voltage supplied to the sensor and use a smaller value feedback resistor in your conditioning circuit. This shifts the sensor's operating point on its resistance vs. force curve to cover the higher range.

The circular 9.53 mm diameter area is the active piezoresistive region where force should be applied. For accurate and repeatable measurements, the force must be distributed evenly over this specific area. Applying force outside this region or with a concentrated point load can lead to inaccurate readings and potential damage to the sensor.