The LF664 uses Faraday's Law of Electromagnetic Induction to measure the process flow. The device consists of two units. The first is a detector, through which the fluid to be measured flows and in which low level signals proportional to flow rates are obtained. The second unit is a converter which supplies excitation current to the detector, amplifies the signals from the detector, and processes and converts the signals into the 4-20 mA dc current signal. Model LF664 is available as a remote or integrally mounted unit. It ranges in size from 500 mm - 1,950 mm (20" - 78").