slurry is mixture of limestone and water. and i would like to know if any other reliable methods are present for the measurement other than the nucleonic gauge method. here the water will be going on varying and the output should given in the range of 4-20 ma.
Can I suggest you do a search of this website. This question has been asked several times previously and has extensive replies.
A person whom we know well enough to borrow from, but not well
enough to lend to.
-- Ambrose Bierce, "The Devil's Dictionary"