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ELF Economical Load and Force Measurement System

ELF System

Economical Load and Force Measurement

Single element force sensors, advanced electronics and software produce a simple but powerful, cost-effective force measurement system. ELF systems are available for purchase in our online store.

Tekscan's ELF force and load measurement system matches the market's need for an inexpensive load and force measurement system with Tekscan's ability to deliver innovative load and force measurement solutions. The system consists of data acquisition hardware, software, and FlexiForce® B201 sensors.  

 

ELF FORCE AND LOAD MEASUREMENT FEATURES & BENEFITS:

 

  • The system utilizes paper-thin (0.008”) FlexiForce B201 sensor technology.
  • The plastic ELF handle contains data acquisition electronics with USB connection and patented interface to B201 sensors.
  • Patented electronics allow you to optimize the performance of the ELF system over a selected force/load range. The electronics adjust the device sensitivity to best fit the dynamic range of the specific application. This allows you to "fine tune" FlexiForce sensors for optimal performance.
  • Simple calibration procedures can deliver accuracies of ± 5%. More controlled procedures can reach an accuracy level of ± 3%.

 

 

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ELF single handle, multi handle, and high-speed systems are available for purchase in our online store.

STANDARD ELF SINGLE-POINT FORCE MEASUREMENT SYSTEM

This system enables you to measure force from one point at a time.

 

ELF System components The system components for the ELF System are as follows:

  • One (1) data recording software CD
    • The software is compatible with Windows 7,8, XP and Vista
  • One (1) USB-interface data acquisition handle
  • Three (3) B201 FlexiForce® sensors (one in each force range of L, M, & H)

 

MULTI-HANDLE ELF (MELF) SYSTEM

The Multi-Handle (MELF) system enables you to measure force from up to sixteen (16) points at one time.

 

ELF Force Measurement ComponentsThe system components for the MELF System are as follows:

  • One (1) data recording software CD, enabling multi-point measurements
    • The software is compatible with Windows 7,8, XP and Vista
  • One (1) USB-interface data acquisition handle (up to fifteen additional handles can be purchased)
  • Three (3) B201 sensors (one in each force range of L, M, & H)

 

Additional Handles and Sensors are available to purchase separately from the ELF System.

 

ELF System components

 

*ELF handles starting with serial number 125 (see back of handle) are not compatible with ELF software 4.3 and above. ELF handles starting with serial number 126 are only compatible with ELF software 4.3 and above.

 

 

 

 

 

 

ELF DATA ACQUISITION ELECTRONICS

 

Residing within the plastic ELF handle is the data acquisition hardware with USB connection. This patented interface ensures optimal performance of our FlexiForce sensors. The simple insertion of a FlexiForce sensor yields a powerful measurement tool.

 

Our patented electronics allow you to optimize the performance of the ELF system over a selected force/load range. The electronics adjust the device sensitivity to best fit the dynamic range of the specific application. This allows you to "fine tune" our single element sensors for optimal performance. Designed to be user friendly, simple calibration procedures can deliver accuracies of ± 5%. More controlled procedures can reach an accuracy level of ±3%. The ELF's innovative electronics provide high quality signals at distances of up to 30 feet from the PC.

 

Handle electronics schematic.

 

Handle electronics schematic

 

ELF SYSTEM MANUAL


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

ELF™ SYSTEM & SENSORS - SPECIFICATIONS & FEATURES

 

PHYSICAL PROPERTIES OF THE B201 SENSOR

 

Thickness:  0.008" (0.203 mm)

Length:  9.0" (228.6 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 Max. Force
  (High Gain) (Low Gain)
Sensor Max. Force Max. Force
B201 - L 0 - 1 lb (4.4 N) 0 - 25 lb (111 N)
B201 - M 0 - 25 lb (111 N) 0 - 150 lb (667 N)
B201 - H 0 - 150 lb (667 N) 1 - 1000 lb (4448 N)


(Adjustable gain feature of the ELF 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°F - 140°F (-40°C to 60°C)*

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

 

 


 

 

 

 

 

 

 

 

                                                                                                                                              

FlexiForce B201 Sensor

 

 

STANDARD ELF SOFTWARE FEATURES

  • 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
  • Ability to store and retrieve calibration files
  • Internal triggering
  • Sampling rates up to 200 Hz
  • High-Speed version available, up to 6,000 Hz
  • ASCII Output
  • Compatible with Windows 7,8, XP and Vista
Single Handle ELF Screen Shot
  Single Handle ELF System Screen Shot
*ELF handles starting with serial number 125 (see back of handle) are not compatible with ELF software 4.3 and above. Newer ELF handles starting with serial number 126 are only compatible with ELF software 4.3 and above.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPTIONAL SOFTWARE FEATURES

More advanced features are available upon request, such as:

  • High Speed Data Acquisition: five different speeds from 200 Hz-6000 Hz
  • Multi-Handle ELF (MELF) software: For the wired system, the multi-channel option allows measurement from up to 16 sensors at a time (each sensor requires an individual data acquisition handle).
    • You may need to purchase a USB Hub to enable you to measure multiple points at one time.
  Multi Handle ELF Screen Shot
    Multi-Handle ELF System Screen Shot

 

ELF SYSTEM & SENSOR PRICING


STANDARD ELF SYSTEM


Single-Handle System $599
  Buy the Single-Handle System Now
High-Speed ELF System $799
  Buy the Hi-Speed ELF System Now
MELF System $799
  Buy the MELF System Now
High-Speed MELF System $950
Additional Handles:
(1-4)

$400/each
(5-9) $380/each
(10-15) $360/each

STANDARD B201 ELF SENSORS


4-Pack 8-Pack
$65 $117
Buy B201-L FlexiForce Sensors Now Buy B201-H FlexiForce Sensors Now