Do you have any good news re use of pressure sensor(s) for measurement of SG?
Work is progressing steadily, and we’re currently testing the sensor in preparation of making it production-ready.
The hardware implementation will be to use the new Spark board together with a PT-100 connector module.
We’ll announce the new Spark board soon.
Sound very good. Will this be a differntial pressure sensor?
Yes. There are two vertically offset pressure sensors. Taking very accurate pressure readings from both sensors lets us calculate pressure differential for a known volume, and use that to calculate density.
I’m looking forward to this.
How does the volume enter the equation? I am thinking
delta P = ro g delta h. What am I missing here?
I assume it will work in the boil. Can it work in 100 deg C?
Du you have an ETA?
You didn’t miss anything, I used the wrong term.
Boiling will make sensor readouts noisier, but measuring SG requires the kind of accuracy that detects droplets falling into a 100L kettle. Useful values for evaporation during the boil are much more tolerant.
I can’t give an ETA with any kind of confidence.