BFM200/201 is a programmable flow transmitter/monitor designed for use with low-viscose clear or translucent liquids, transmitting IR light. The operating principle is based on the liquid volume measurement through light-weight rotor, IR sensor, and sophisticated electronics converting flow rate into a standard linear output signal. An RS232 serial interface is also available. The material types used have an exceptional chemical and thermal (up to 90 °C) resistance. Other ranges except the standard 0.5…20 l/min flow range as well as 1% inter changeability are available upon request. BFM200/201 is equipped with a keyboard and a local 3-digit LED display for easy programming and flow monitoring and can be used both as a flow meter and transmitter suitable for water treatment and other applications.