Strain gauge measurement, signal resolution.

[jake1962]

Strain gauge measurement, NI9237 in Signal Express. Why does signal resolution in signal express appear to drop as load is applied to rosette? High resolution, 12 to 13 decimal places when relaxed, as low as 5 decimal places under load. Causes strain v's strain rate plots to look very strange. Thanks in advance for any help!

[jyang72211]

It could just be a setting on your chart.  If your chart is on auto-scaling, you need to make sure that it is doing it properly.

Yik

[sahpe]

Hello Jake,

Are you still seeing this issue? I was going to suggest that you make sure the readings you are taking are within your pre-set range, otherwise I am not sure how the device will react.

Let me know if you still need help.

Kind Regards,

Michael S.
Applications Engineer
NI UK & Ireland