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alexd
Posts: 1
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I need to measure displacement (angular or liniar) of a mouse wrist joint when applying extenal pulling force (also to measure), in order to build force- displacement curve. Any ideas on sensors I can use?

This is to measure muscle tone in spastic experimental animals.
Amount of force is several gramms, displacement - 15-50 degrees, or can be converted to liniar
Member plf
Member
plf
Posts: 25
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Re: I need to measure displacement (angular or liniar) of a mouse wrist joint when applying extenal pulling force (also to measure), in order to build force- displacement curve. Any ideas on sensors I can use?

Check out the FT03 (Force Displacement Transducer) from Grass. It requires a DC amplifier however I believe it should work for your application.

link to specs...

http://www.grass-telefactor.com/products/transducers/ft03.html

If you do decide to go with this I would suggest the CP122 DC amplifier and don't forget to get a powersupply for it as Grass complicates things by selling them separately.
Active Participant
Spencer S.
Posts: 611
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Re: I need to measure displacement (angular or liniar) of a mouse wrist joint when applying extenal pulling force (also to measure), in order to build force- displacement curve. Any ideas on sensors I can use?

Alexd,

The Sensors section of the NI Developer Zone has a great deal of useful information regarding sensors. I have included a link to this location below:

NI Developer Zone - Sensors

Specifically, the following Application Note discusses the selection of displacement sensors:

How to Choose Among LVDT, RVDT, Potentiometer, Optical Encoder, Ultrasonic, Magnetostrictive, and Ot...

Good luck with your application.

Spencer S.
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