> Is the beer pressurised (carbonated?) if so, it may screw up any > pressure based sensing methods. Ah, maybe that's what Neil meant. Yes, in that case you would need two pressure sensors, one at top to and one at bottom. The difference indicates the height of the beer in the tank. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body