The Seametrics EX100/200 Series magmeters feature a complete lack of moving parts, which is the source of their reliability. Brass (EX100) and stainless steel (EX200) models withstand a variety of temperature, pressure, and chemical conditions. The EX-Series has no rotor to stop turning in dirty water and no bearings to wear out .

A rapidly reversing magnetic field is produced in the lower housing. As the fluid moves through this field, a voltage is generated that is measured and translated into a frequency signal proportional to flow rate. This square wave signal can be sent directly to a PLC or other control, or can be converted using any of the Seametrics family of indicators and converters .

A modular system of electronics can be installed directly on the flow sensor or mounted remotely. The FT430 (externally powered with pulse) and the FT440 (loop powered) both provide digital rate and total displays, as well as a programmable pulse; the FT440 also provides a 4-20 mA analog output. The AO55 is a blind analog (4-20 mA) transmitter .

The adapter fitting is standard male NPT, and can be directly threaded into ordinary saddles or threaded weld fittings. A hot-tap option is available, allowing installation and removal under pressure; a bronze ball valve is standard, with a 316 stainless steel valve option if needed. Applications include clean or dirty liquids, conductive liquids, municipal, industrial, and irrigation systems .