time averaging in signalexpress

[jhammer]

I have a task with three strain gauges and everything is working out nicely.  The core problem is that I want to reduce the scatter and smooth out the measurements.  The scatter isn't much, usually +/- 0.0015 of the correct strain values, but it makes reading the value difficult.

I found the time averaging function, but that doesn't seem to do anything as fasr as I can tell.

Does anyone know a good method for getting a more coherent reading?

[The_Red_Barron]

Hi jhammer,

 If you are trying to measure a DC voltage from your straing gauges you could use a low pass filter to reduce any high frequency components causing the scatter.  You can implement a software low-pass filter in Signal Express via Insert>>Processing>>Analog Signals>>Filter.

Regards,

[jhammer]

Thanks for the advice.  Unfortunately, testing showed that the end result was simply error in application of the strain gauges.  As a result, we had a new testing sample prepared.

Regardless, thank you for showing me how to insert the low-pass filter.  The procedure works and I will keep it in mind for the future.