McMillan Model 209 Mass FLO-SENSORS are capable of measuring virtually many gases as low as 0-50 L/minute or as high as 0-500 L/minute. Repeatable results are achieved using a patented thermal mass flow sensor design. This proven design minimizes zero drift while maintaining fast response and linear outputs. Because of the compact size and economical cost of these products, the Model 209 Series FLO-SENSORS are suitable for a wide variety of industrial, commercial, laboratory and O.E.M. applications. Some sample applications include furnace flow control, online gas blending, regulation of sample gas streams, and precise gas injection systems. Aluminum construction with NPT ports is standard. An analog output is provided for remote data monitoring. A cable assembly is required for operation.