Series TFM — in-line variable-area flow meters

• Direct reading • Body: acrylic • Float: stainless steel • Water flow: 0.5...750 l/min • Air flow: 1...1,400 Nm³/h • Maximum pressure: 10 bar • In-line mounting • Optional electrical contacts Continuous flow measurement on air and neutral liquids (In-line mounting) The flowmeter works on the variable-area principle. The fluid flows vertically upwards through a tapered tube that widens towards the top. The float, pushed by the fluid, rises to the height where the flow area is such that the weight of the float balances the thrust of the fluid. The upper edge of the float indicates the instantaneous flow rate on the scale on the tube. For flow monitoring, a version with 2 electrical reed contacts can be ordered.