FlexiForce™ A101 Sensor

The A101 is our smallest sensor optimized for high volume manufacturing and ideal for embedding into products. The 2-pin sensors are currently our smallest standard sensor.

The sensors can measure up to 10 lbs.* The dynamic range of this mini force sensor can be modified by changing the drive voltage and adjusting the resistance of the feedback resistor (see "How to Adjust the Force Range" within the Electronics tab on the left).

• Sensor acceptance criteria ±40% of nominal
• Sensor resistance measured 20 seconds after applied load
• Sensor loaded through a polycarbonate puck equal to 68% (0.0123 in²) of total active area
• Sensor was not attached to any drive circuitry

Typical Performance†

Linearity (Error): < ±3% of Full Scale (Line drawn from 0 to 50% load)

Repeatability: < ±2.5% (Conditioned Sensor, 80% of Full Force Applied)

Hysteresis: < 4.5 % of Full Scale (Conditioned Sensor, 80% of Full Force Applied)

Drift: <5% / logarithmic time (Constant Load of 25 lb (111 N))

Response Time: < 5 µsec (Time required for the sensor to respond to an input force; Impact load - recorded on Oscilloscope)

Operating Temperature: -40°C - 60°C (-40°F - 140°F)††

†All data above was collected utilizing an Op Amp Circuit. If your application cannot allow an Op Amp Circuit, consult the FlexiForce Integration Guide, or contact a FlexiForce Applications Engineer.

††Force reading change per degree of temperature change = 0.36%/ºC (±0.2%/ºF)

Tekscan Recommends Using an Op Amp Circuit

If your application cannot allow an Op Amp Circuit, consult the FlexiForce Integration Guide, or contact a FlexiForce Applications Engineer. If you prefer to build your own electronics, we recommend using a circuit similar to the diagram below. This will provide linear data, making it easier to calibrate the sensor.

How to Adjust the Force Range:

*In order to measure higher forces, apply a lower drive voltage (-0.5 V, -0.25 V, etc.) and reduce the resistance of the feedback resistor (1kΩ min.) To measure lower forces, apply a higher drive voltage and increase the resistance of the feedback resistor.

Measurement Tools

If you need help selecting the best measurement tool for your application, take a look at our comparison chart or contact us.

FlexiForce™ OEM Development Kit

For: Design, OEM, and Product Engineers The OEM Development Kit allows you to capture proof-of-concept data that shows how FlexiForce™ sensors will behave in your product or application environment. The kit includes both analog and digital output. Learn More

FlexiForce Quickstart Board

For: Design, Lab, OEM, and Product Engineers The FlexiForce Quickstart Board is a single source circuit that provides signal conditioning to the sensor and a linear voltage output with an applied load. It can be quickly dropped into a prototype or easily designed into a finished product. Learn More

Standard Multimeter (not sold by Tekscan)

While standard multimeters can be used, most do not provide a constant voltage supply (which is recommended for FlexiForce sensors) and they are more difficult to calibrate compared to the tools above.