I didn't read all the way through the blog, but the indications I got is a Coriolis meter would not last. However, my experience with Krohne's Optimass 7000 Series would indicate otherwise. We've had them installed for quite some time on lime slurry and they have performed well from a stability, accuracy, and reliability standpoint. This straight, single tube design made from titanium is worth investigating further.
Here we are in 2019 and I'm reading all these suggestions for non-nuclear densometers:
This thread suggests the Sciam DS3 back in 2012 - they no longer exist. Another thread from 2015 suggests the MPV MassExact - they no longer exist.
I just stumbled upon REDmeters RM_ series.
As best I can tell, it's the same product through several corporate rebrandings. The tech seems simple: measuring the deflection of a rubber pipe. Now, does it actually work?