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FlexiForce A201 Sensor

FlexiForce A201 Sensor

Most popular standard sensor that meets the requirements of most customers. Available direct from Tekscan (below) or at Digikey and Mouser.

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FlexiForce A201 Sensor


FlexiForce™ A201 Sensor

Digikey Mouser

A201 sensors are trimmable and have a 3-pin male connector. 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 small, versatile 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).

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Specifications & Performance

Sensor Thickness:                             0.203 mm (0.008 in.)
Force Sensor Length
7.50 in
6.00 in
4.00 in
2.00 in
Sensing Size (Diameter/Width)
0.375 in
Standard Force
1 lbs
25 lbs
100 lbs
Temperature Range (Low)
-40 F
Temperature Range (High)
140 F

Most popular standard sensor, can be trimmed

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 111 N (25 lb))
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)


≥ 3 million actuations (Perpendicular load, room temperature, 22 N (5 lb))

Temperature Sensitivity:

0.36%/°C (± 0.2%/°F) (Conductive heating)

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.


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.

A201 circuit diagram

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.

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