2" FlexiForce 0-1 lb. Resistive Force Sensor

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FlexiForce® sensors are utilized in many applications to: 

  • Detect and measure a relative change in force or applied load
  • Detect and measure the rate of change in force
  • Identify force thresholds and trigger appropriate action
  • Detect contact and/or touch

FlexiForce Sensor Definition

FlexiForce: (Noun) Pronunciation: flex e fôrs

1. a: a versatile, durable piezoresistive force sensor that can be made in a variety of shapes and sizes;

    b: a piezoresistive sensing device in which resistance is inversely proportional to applied force;

 

2. a customizable force sensor and economical force measurement tool that is easily integrated into OEM products;

 

3. a: a patented, ultra-thin (0.008 in.), flexible printed circuit that senses contact force; b: a force and load sensor that is available in varying force ranges and standard models (A201, A301, A401, HT201, ESS301), suiting a variety of applications for research and product development/testing

Benefits of FlexiForce Sensors

  • Greater flexibility
  • Superior linearity & accuracy (±3%)
  • Expert technical guidance
  • Wide range of forces
  • Sensor output is not a function of loading area
  • High temperature force measurements (up to 400ºF) available with High-Temp Model (HT201)
  • Optional sensing area sizes
  • Off-the-shelf availability for testing & prototyping
A201 MODEL

(Spec Sheet)

A301 MODEL

(Spec Sheet)

A401 MODEL

(Spec Sheet)

Physical Properties

Thickness 0.008 in. (.203 mm)
Length

7.75 in. (197 mm)

6 in. (152 mm)*

4 in. (102 mm)*

2 in. (51mm)*

1 in. (25.4 mm)

2.24 in. (56.8 mm)
Width 0.55 in. (14 mm)
Sensing Area 0.375 in. diameter (9.53 mm) 0.375 in. diameter (9.53 mm)

1.0 in. diameter

(25.4 mm)

Connector 3-pin male square pin 2-pin male square pin

Typical Performance

Linearity Error <±3% <±3% <±3%
Repeatability

<±2.5% of full scale

<±2.5% of full scale

<±2.5% of full scale

Hysteresis

<4.5% of full scale

<4.5% of full scale

<4.5% of full scale

Drift

<5% per logarithmic time scale

<5% per logarithmic time scale

<5% per logarithmic time scale

Response Time <5 microseconds <5 microseconds <5 microseconds

Operating

Temperatures

-40°F - 140°F

(-40°C - 60°C)

-40°F - 140°F

(-40°C - 60°C)

-40°F - 140°F

(-40°C - 60°C)

Force Ranges

0-1 lb (4.4 N)

0-25 lb (110 N)

0-100 lb (440 N)**

≈ 0-1 lb (4.4 N)

≈ 0-25 lb (110 N)

≈ 0-100 lb (440 N)**

     0-25 lb (110 N)***

Temperature

Sensitivity

Output variance up

to 0.2% per degree F

Output variance up

to 0.2% per degree F

Output variance up

to 0.2% per degree F

* For an additional fee.

 

** See recommended drive circuit. In order to measure forces above 100 lbs. (up to 1000 lbs.), apply a lower drive voltage and reduce the resistance of the feedback resistor (1 k Ω min).

 

***Measurement ranges of 0-1 lb and 0-7000 lb are achievable with the A401 sensor by utilizing the recommended circuitry.  The force range can be extended by reducing the drive voltage, VT, or the resistance value of the feedback resistor, RF.  Conversely, the sensitivity can be increased for measurement of lower forces by increasing VT or RF.

 

 

Example of A201 Excitation Circuit    

FlexiForce Recommended Circuit

 

 

 

Additional Information

SKU ES000657
Manufacturer Emmeshop

 

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