Learn about another application, such as refining of precious metals, where you can use a glass tube variable area flowmeter.
In corrosive environments virtually all the instruments must be protected, for example, by placing them in panels or cabinets.
Precious metal refineries are places with harsh environments – a lot of chemicals and caustic vapours, acids and chlorine gas mainly – which corrode almost everything and for that reason many times in order to protect the instruments, these are installed in panels or cabinets, that are made of GRP material and are sealed.
Variable area flowmeters model 2150 in protective cabinet
Glass tube variable area flowmeter model 2100
Our 2000 Series glass tube variable area flowmeters, model 2150 in this case with valve at the outlet, are mounted in stainless steel cabinets for the supply of cracked ammonia and nitrogen to six small tube furnaces which are used to produce a reducing atmosphere in the furnace to remove impurities from the precious metals.
They add the cracked ammonia for a defined period of time, then close off the ammonia supply, and then purge with nitrogen as a blanketing gas.