FlexiForce^® A301 Sensor

The A301 is optimized for high volume manufacturing and ideal for embedding into products and applications. The 2-pin sensors are currently our smallest standard sensor. We highly recommend you use A301 sensors with our Quickstart Board (pictured below), a finished single voltage source circuit, if you are not using your own electronics or multimeter.

The sensors are available in three force ranges: Low 4.4 N (0 – 1 lb), Medium 111 N (0 – 25 lb) and High 445 N (0 – 100 lb)*. The force ranges stated are approximations. The dynamic range of this force sensor can be modified by changing the drive voltage and adjusting the resistance of the feedback resistor.

How to Adjust the Force Range:

*In order to measure higher forces, apply a lower drive voltage (-0.5 V, -0.10 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.

For an alternative to the recommended circuit, try our FlexiForce® Quickstart Board. This is a finished single voltage source circuit which can be quickly dropped into a prototype or easily designed into a product to obtain force measurements.

Typical Performance

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

Repeatability:  < ±2.5% of Full Scale (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)*

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