WELF Wireless Force Measurement System

FlexiForce WELF 2 System

The Wireless ELF 2 System is a user-friendly, cost-effective load measurement system, turning your PC or laptop into a complete force measurement instrument.

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$1,099.00

Description

Wireless Force Measurement

The Wireless ELF™ 2 System is a user-friendly, cost-effective load measurement system. Sampling rates up to 200 Hz (high speed software samples up to 6,000 Hz). This system combines:

  • 3 FlexiForce™ WB201 sensors
  • Battery-operated WiFi transmitter (certified 802.11b radio- 802.11b/g/n compatible)
    • The WiFi connection setup has ad hoc and access point (unsecured router) network capability.
  • Windows-compatible software*, turning your PC or laptop into a force measurement instrument.

* Compatible with Windows 7 and 8.1, but not Windows 10

Please note: (1) sensor requires (1) transmitter to measure (1) point. If you need to measure additional points, you need to purchase additional transmitters and sensors.

For more detailed information on the Wireless ELF System, including how to set it up and take force measurements, please download the ELF User Manual.

ELF User Manual

Sensor Specifications

Physical Properties of the WB201 Sensor

Thickness: 0.203 mm (0.008 in.)

Length: 197 mm (7.75 in.) End-to-end

Width: 14 mm (0.55 in.)

Active sensing area: 9.53 mm (0.375 in.) diameter

Connector: Custom interface to ELF™ Data Acquisition System

WB201 Sensor

Recommended Max Force

Sensor Max Force (High Gain) Max Force (Low Gain)
B201 - L 4.4 N (0 - 1 lb) 111 N (0 - 25 lb)
B201 - M 111 N (0 - 25 lb) 667 N (0 - 150 lb)
B201 - H 667 N (0 - 150 lb) 4448 N (0 - 1,000 lb)

(Adjustable gain feature of the WELF 2 System allows you to set force ranges)

Typical 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: -40°C - 60°C (-40°F - 140°F)*

* Force reading change per degree of temperature change = ±0.36%/°C (0.2%/°F)

* For loads less than 10 lb, the operating temperature can be increased to 74° C (165° F)

Software

Wireless ELF™ 2 Software

WELF2 Software

  • Adjustable gain (lets you fine-tune the desired force range)
  • Real-time graphic displays in strip chart, column graph, or digital readout
  • Data retrieval and playback
  • Simple and storable calibration files
  • Internal triggering
  • User-selected recording speeds from 10 Hz up to 200 Hz
  • High speed version samples up to 6,000 Hz
  • ASCII Output to data analysis software
  • Compatible with Windows 7 and 8.1, but not Windows 10
  • Capability to tare a load