The Wireless ELF 2 System is a user-friendly, cost-effective load measurement system. This system combines 3 FlexiForce® WB201 sensors, battery-operated WiFi transmitter (certified 802.11b radio- 802.11b/g/n compatible), and Windows-compatible software*, turning your PC or laptop into a force measurement instrument. The WELF2 system, sampling rates up to 200 Hz and comes in a high speed version with sampling rates up to 6,000 Hz. The WiFi connection setup has ad hoc and access point (unsecured router) network capability. For multi-handle use an unsecured router is required.
*Compatible with Windows 7, 8.1, and 10
|WELF2 System||Sampling Rate||Range||Max. # of Handles||Includes|
|Single Handle||Up to 200 Hz||65 Meters||1||(1) Handle-WiFi transmitter, (3) WB201 sensors, Windows-compatible ELF software|
|Single Handle High Speed||Up to 6,000 Hz||65 Meters||1||(1) Handle-WiFi transmitter, (3) WB201 sensors, Windows-compatible ELF high speed software|
|*Multi Handle||Up to 200 Hz||50 Meters||16||(1) Handle-WiFi transmitter, (3) WB201 sensors, Windows-compatible ELF software|
|*Multi Handle High Speed||Up to 6,000 Hz||25 Meters||8||(1) Handle-WiFi transmitter, (3) WB201 sensors, Windows-compatible ELF high speed software|
*An unsecured router is required for multi-handle use. Additional handles (WiFi transmitters) available for purchase.
Length: 3.75" (95.3 mm)
Width: 1.83" (46.4 mm)
Height: 1.05" (26.7 mm)
Weight: 3.3 oz (95 g)
The sensors are terminated with a male square pin to easily connect to the Wireless Transmitter.
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
|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.
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)