A metal tube float flow meter is a flow meter designed and manufactured according to the principle of measuring variable area using a double watchdog plus an industrial anti-interference processor and additional circuitry. It is used to measure the flow of liquids and gaseous media; It has the functions of field indication and television transmission. Based on this, the application of monolithic machine technology to make its functions intelligent, not only with the standard two-wire system of 4 - 2 0 m A D C output signal, but also with on-site flow accumulation, digital communication, control alarm, on-site measurement parameter change, various power modes and other functions. Metal tube float flow meter with its reasonable structure, strength, small pressure loss, wide measuring range, convenient use and maintenance and other advantages, is widely used in petroleum, chemical, metallurgical, pharmaceutical, brewing, environmental, energy and other areas of the flow management and measurement system. • Measurement range: water (20°C) 1.6~200000L/h air (20°C, 0.1013MPA) 0.05~5000m3/h · Measurement ratio: 1 0:1 • Accuracy: 1.5 Level 1.0 • Pressure loss: 1.5KPa - 38KPa (see flow meter) Pressure class: DN15 - DN50 Standard PN4.0MPA Special PN25MPA DN80 - DN200 Standard PN1.6MPA Special PN16MPA • Medium temperature: from - 80°C to + 200°C Standard type 0°C to + 85°C Anti-corrosion type + 400°C High temperature type • Medium viscosity: DN15º