On Tue, Sep 17, 2019 at 6:17 PM Chris Albertson
<[email protected]> wrote:
If you want better than 16-bits and 1KHz then you also are going to need a
very good quality analog signal conditioning and instrumentation amplifier.
I've never heard of anybody getting 16-bit resolution from a
load cell or strain gauge.
There are full-bridge strain gauges with additional
adjustments to balance the common mode noise down to the
minimum, but still, 16 bits is one part in 65,536, which is
really tough for
any analog electronics. Most people say that anything
better than 1 part in 10,000 is getting extreme. Anyway,
strain gauges produce very small signals, so a really good
amplifier that cancels out all noises is critical. Ambient
RF that gets rectified in the amplifier inputs will likely
be the greatest problem.
Jon
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