Using DAC to create reference in a wheatstone bridge for strain gauge?
I wouldn't do it this way because the DAC's output noise will get multiplied by the gain of the op-amp. A common solution is to use an instrumentation amp like the AD620 - it has a pin called "REF" and this can offset the output to anywhere between the supply rails. I've used it with a DAC many times but use a low pass filter between DAC output and REF input because DAC noise is a real problem. Maybe 100 ohms and a 10uF ceramic.

You could addd another op-amp stage (unity gain) and feed the DAC into it via the filter I mentioned.