The Yokogawa RAGK rotameter is designed for measurement of liquids and gases. The conical glass metering tube has a free rotating float. This float is mounted in a vertical pipeline with flow direction upwards. The flow is indicated by the top of the float and can be read from the standard scale on the metering tube or from a connected scale. The flow metering tube is transparent giving you full insight into the process and position of the float – a scale on the outside of the tube indicates the true flow rate. All the measurement tubes in this series of variable area flowmeters are made of either glass or plastic.

Features include a large selection of measuring ranges, high accuracy of free rotating float even at low flow rates, low pressure loss, visual check of the medium, non-powered local indication, large selection of scales, and an optional built-in valve. Measurable flow rates are water 0.002 l/h to 630 l/h and air 0.2 l/h to 6,300 l/h.