F Flle ex xiiF

F Flle ex xiiF
FlexiForce®
A201 Standard Force & Load Sensors
Actual size of sensor
Sensing
area
Physical Properties
Thickness
Length
Width
Sensing Area
Connector
Substrate
0.008" (0.208 mm)
7.75" (197 mm),
optional trimmed lengths: 6” (152 mm), 4” (102 mm), or 2” (51mm)
0.55" (14 mm)
0.375" diameter (9.53 mm)
3-pin Male Square Pin (center pin is inactive)
Polyester (ex: Mylar)
Standard Force Ranges (as tested with circuit shown below)
Recommended Circuit
Vout = -VT * (R F /R S )
0 - 1 lb. (4.4 N)
0 - 25 lb. (110 N)
0 - 100 lb. (440 N)*
RF**
RS
-9V *
-
In order to measure forces above 100 lb
(up to 1000 lb), apply a lower drive
voltage and reduce the resistance of the
feedback resistor (1kΩ min.)
Typical Performance
VT = -5V *
+
Vout
U1
MC34071
+9V *
* Supply Voltages should be constant
** Reference Resistance R F is 1k Ω to 100k Ω
Sensor Resistance RS at no load is > 5M Ω
Max recommended current: 2.5 mA
Evaluation Conditions
Linearity (Error)
Repeatability
Hysteresis
Drift
Response Time
< ±5%
< ±2.5% of full scale
< 4.5 % of full scale
< 5% per logarithmic time scale
< 5 µsec
Operating Temperature
15°F - 140°F (-9°C - 60°C)*
Line drawn from 0 to 50% load
Conditioned sensor, 80% of full force applied
Conditioned sensor, 80% of full force applied
Constant load of 25 lb (111 N)
Impact load, output recorded on oscilloscope
Time required for the sensor to respond to an input force
*Force reading change per degree of temperature change = ±0.2%/ºF (0.36%/ºC)
*For loads less than 10 lbs., the operating temperature can be increased to 165°F (74°C)
Tekscan, Inc. 307 West First Street South Boston, MA 02127-1309 USA tel: 617.464.4500/800.248.3669 fax: 617.464.4266
e-mail: [email protected]
URL: www.tekscan.com
Rev E_022806
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