Strain gauge

[cwatts26]

I am using the strain gauge vi for labview, on the myrio.  I will be amplifying the voltage across the resistor of the strain gauge, due to the readings being so small.   Do I need to document this on the program?

Thanks

Caleb

[GerdW]

Hi caleb,

documenting what your software does is never wrong.

The same applies to any hardware that is used for a certain experiment…

[cwatts26]

Not really what I meant, obviously i'm going to document this, but as far as running the program, do I change any of the characterisitcs?  I am still keeping the 3.3 input voltage, just amplifiying the strain gauge for better readings.

Caleb

[GerdW]

Hi Caleb,

amplifying always amplifies any noise, so you may need to handle that…

[EricReynolds]

Caleb,

I'm interested in measuring strain using a myRio.  I wonder if you could offer advice on choosing strain gauges.  For instance, which strain gauges did you use?

Thanks in advance,

 Eric

[Catherine-B]

Hi EricReynolds, 

The article below offers some guidance on choosing a strain guage:

https://www.ni.com/en/shop/data-acquisition/sensor-fundamentals/measuring-strain-with-strain-gages.h...

[DrFlippo]

How do you use a strain gauge with the myRIO?

[Great_Britton]

Hey,

Here is a guide to some common myRIO projects:  https://education.ni.com/teach/resources/92/ni-myrio-project-essentials-guide 

However, since this is an older thread on a slightly different topic, if you want to receive good help you should start a new thread.

[EricReynolds]

Thank you, Catherine; this was helpful.

I ended up using general purpose linear pattern strain gauges from Vishay Precision Group, M-Bond 200 adhesive (to steel) and AD620 amplifiers.