Muscle fatigue
Fatigue over time
Videos
View videos related to this product at
www.vernier.com/hd-bta
Calibration
You should not have to perform a new calibration when using the Hand
Dynamometer. We have set the sensor to match our stored calibration before
shipping it. You can simply use the appropriate calibration value that is stored in
the data-collection program.
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Specifications
Stored calibration (N)
slope: 175.416
intercept: –19.295
Stored calibration (kg)
slope: 17.8875
intercept: –1.9676
Stored calibration (lbs)
slope: 39.4351
intercept: –4.3379
Accuracy
±0.6 N
12-bit resolution
0.2141 N
Power
7 mA @ 5VDC
Safety range (maximum force without damage to
the sensor)
0 to 850 N
Operational range:
0 to 600 N
How the Sensor Works
The Hand Dynamometer is a strain-gauge based isometric force sensor. This sensor
amplifies the force applied converting it into a voltage that is monitored by the
lab interface and read in the desired units of force. The Hand Dynamometer reports
values in newtons (N), pounds (lb), or kilograms (kg).
Troubleshooting
If the sensor does not read zero in the orientation in which you are using it,
follow the standard zeroing procedure for the data-collection program you are
using.
If the default experiment length is too long for your experiment, set the
data-collection parameters in the program you are using.
For additional troubleshooting and FAQs, see
www.vernier.com/til/1431
Repair Information
If you have watched the related product video(s), followed the troubleshooting
steps, and are still having trouble with your Hand Dynamometer, contact Vernier
Technical Support at [email protected] or call 888-837-6437. Support
specialists will work with you to determine if the unit needs to be sent in for
repair. At that time, a Return Merchandise Authorization (RMA) number will be
issued and instructions will be communicated on how to return the unit for repair.
Warranty
Vernier warrants this product to be free from defects in materials and workmanship
for a period of five years from the date of shipment to the customer. This warranty
does not cover damage to the product caused by abuse or improper use. This
warranty covers educational institutions only.
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