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ess102 high humidity sensor
ess102 high temperature sensor
ess102 high humidity sensor
ess102 high temperature sensor

FlexiForce ESS102 Sensor

Standard force sensor, which is ideal for conditions with high temperature and humidity.  Available direct from Tekscan (below) or at Digikey and Mouser.

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FlexiForce ESS102 Sensor


FlexiForce™ ESS102 Sensor

Digikey Mouser

The ESS102 sensor is made from Tekscan's Enhanced Stability Series (ESS) pressure sensitive ink. This allows for better performance in a wider range of operating and storage conditions. ESS102 was developed with OEM customers in mind and designed to reached the majority of our OEM customer's test expectations. 

ESS102 is available in one force range: 4.4 N (0 - 1 lb). 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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Sensor output is a function of many variables, including interface materials. Therefore, Tekscan recommends the user calibrate each sensor for the application. The graph below is an illustration of how a sensor can be used to measure varying force ranges by changing the feedback resistor (the graph below should not be used as a calibration chart).

Test Conditions: Input Voltage= 0.45V; Load Applied= 1lb; Measured Current= 79uA

voltage chart

Specifications & Performance

Sensor Thickness: 0.203 mm (0.008 in.)
Force Sensor Length: 38.1 mm
Sensing Size (Diameter/Width):  6.1 mm
Standard Force:  4 N
44 N
Temperature Range (Low):  -40 °C
Temperature Range (High):  85 °C
Connector: 2-pin Male Square Pin
Substrate: Polyester
Pin Spacing: 2.54 mm (0.1 in.)
Notes:  Ideal for applications where high temperature and humidity are present


Typical Performance

Linearity (Error): < ±8.6% of Full Scale (Line drawn from 0 to 50% load)
Repeatability: < ±2.5% (Conditioned Sensor, 80% of Full Force Applied)
Hysteresis: < 5.5 % of Full Scale (Conditioned Sensor, 80% of Full Force Applied)
Drift: <3.8% / 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 - 85°C (-40°F - 185°F) (Convection and conduction heat sources)


≥ 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.

ESS301 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.

Related Products

FlexiForce Prototyping Kit

FlexiForce Prototyping Kit

The FlexiForce™ Prototyping Kit allows you to efficiently progress your FlexiForce-embedded design through advanced integration phases. 

Note: The FlexiForce Prototyping Kit includes an open-source software program designed specifically to help with the sensor integration process. Some code programming experience is necessary. 

New and improved replacement for the OEM Development Kit.

Available direct from Tekscan or at Mouser.com.

FlexiForce Quickstart Board

FlexiForce Quickstart Board

The FlexiForce Quickstart Board 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. Available direct from Tekscan or at mouser.com.

FlexiForce Load Concentrators

FlexiForce Load Concentrators

Optimize FlexiForce sensor linearity and repeatability with these delrin load concentrators, or "pucks." Available direct from Tekscan (below) or at Digikey and Mouser.

FlexiForce Analog Circuit Modules

FlexiForce Analog Circuit Modules

Interchangeable circuit modules for use with the FlexiForce Sensor Characterization Kit, the FlexiForce Prototyping Kit, or your own electronics.