KOBOLD KFF/KFG flow meters are used for sensing small, to extremely small, volumetric flow rates of gases (KFG) and liquids (KFF). The media must be transmissive for infrared light. KFF-1/ KFG-1 flow meters are available in Ryton®, brass and PTFE materials; therefore suited for many applications in industry, in laboratories, and so forth. The new KFF-15 sensor is delivered as standard with (0 - 5 VDC) analogue output and frequency output. The frequency output is optional on the KFF-10 / KFF-11 models. Series KFF-3 / KFG-3 flow meters are available in Ryton® and in brass.