Glass measuring cone - these permit direct viewing of the float and direct reading of the flow. Metal measuring cone - these are for high pressure. As direct viewing is not possible, they have either mechanical, electromechanical or electronic displays. IIC T6 . The flow controller product group comprises flow, metering and monitoring devices for liquids and gases.
Various materials are available for the parts in contact with the product.
The sole requirement for the use of electromagnetic flowmeters is that the product has a specific minimum electric conductivity. The Coriolis force enables direct massflow metering of fluids without having to make independent measurements of the density and volume, followed by multiplication of these two measured variables. This is why changes in density, pressure, temperature, viscosity and flow profile, or in the electrical conductivity or in homogeneously distributed small gas bubbles and solid particles, exert negligible influence on the measurement accuracy. The principle of measurement is based on the ultrasonic transit time. They have a wide spectrum of applications ranging from sewage through ammonia, nitrogen, natural gas, air, phosphoric acid and heavy oils to desalinated water and mixtures of water and oil.