FlexiForce
®
Standard Force & Load Sensors Model # A401
Physical Properties
Thickness
Length
Width
Sensing Area
Connector
Substrate
Pin Spacing
0.208 mm (0.008 in.)
56.8 mm (2.24 in.)
31.8 mm (1.25 in.)
25.4 mm (1 in.) diameter
2-pin Male Square Pin
Polyester (ex: Mylar)
2.54 mm (0.1
in.)
Sensing area
Standard Force Ranges (as tested with circuit shown below)
Actual size of sensor
Force Range:
0 - 25 lb. (110 N)
Recommended Circuit
Force Range Adjustments
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,
V
T
,
or the resistance value of the feed-
back resistor, R
F
. Conversely, the sensi-
tivity can be increased for measurement
of lower forces by increasing V
T
or R
F
.
Typical Performance
Linearity (Error)
Repeatability
Hysteresis
Drift
Response Time
< ±3%
< ±2.5% of full scale
< 4.5 % of full scale
< 5% per logarithmic time scale
< 5 µsec
Evaluation Conditions
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
*
Operating Temperature
15°F - 140°F (-9°C - 60°C)*
*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: marketing@tekscan.com
URL: www.tekscan.com
Rev C_2811
MCU
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