Tekscan FlexiForce WB201 Variable Resistance Sensors for WELF 2

The WB201 FlexiForce sensors are available in three force ranges for use with the Wireless Economical Load and Force System (WELF 2):

WB201-L: Low (0-25 lb; 111 N)
WB201-M: Medium (0-150 lb; 667 N)
WB201-H: High (0-1000 lb; 4450 N)

The sensors are terminated with a male square pin to easily connect to the Wireless Transmitter.

Physical Properties

Thickness: 0.008" (0.203 mm)
Length: 7.75" (197 mm) End-to-end
Width: 0.55" (14 mm)
Active sensing area: 0.375" (9.53 mm) Diameter
Connector: Custom interface to ELF Data Acquisition System

Recommended Maximum Force

Sensor Max. Force (High Gain) Max. Force (Low Gain)
WB201 - L 0-1 lb (4.4 N) 0-25 lb (111 N)
WB201 - M 0-25 lb (111 N) 0-150 lb (667 N)
WB201 - H 0-150 lb (667 N) 1-1000 lb (4448 N)

Adjustable gain feature of the Wireless ELF 2 System allows you to set force ranges.

Typical Sensor Performance

Linearity (Error): < ±3% (Line drawn from 0 to 50% load)
Repeatability: < ±2.5% of Full Scale (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 90% sensor rating)
Response Time: < 5 μsec (Time required for the sensor to respond to an input force; Impact load - recorded on Oscilloscope)
Operating Temperature: 15°F - 140°F (-9°C - 60°C)*

* Force reading change per degree of temperature change = ±0.2%/°F (0.36%/°C)
For loads less than 10 lb, the operating temperature can be increased to 165°F (74°C)

FlexiForce is a trademark of Tekscan, Inc.