The PRM EFM-DN series meters are flow totalizing meters that can be used to provide rate flow and totalized flow of various liquids such as water, polymers, surfactants and other chemicals. These meters are non-invasive electromagnetic meters designed for harsh applications and long life with excellent accuracy. Unlike paddlewheel, vortex or other mechanical meters, there are no moving parts through the entire measuring chamber and accuracy is increased while maintenance requirements are decreased. The entire flow chamber consists of a PTFE liner to ensure absolute chemical compatibility with most all known chemicals.