SITRANS FVA250 - Variable Area Flowmeter

The SITRANS FVA250 is a robust variable-area flowmeter designed for precise measurement of liquids and gases in harsh conditions, including high pressures and temperatures.

The SITRANS FVA250 is a rugged variable-area flowmeter designed for precise measurement of liquids and gases under harsh conditions, including high pressures and temperatures.

With its all-metal design, the SITRANS FVA250 flowmeter reliably measures a wide range of liquids and gases in closed piping systems—including corrosive and flammable media. A selection of flanges, liners, and float materials meets the requirements of the pharmaceutical and chemical industries. Standard designs are available on short notice.

Achieve reliable readings for liquids and gases even under extreme conditions, supporting operational efficiency and safety.

Robust all-metal construction and an impact-resistant housing reduce maintenance requirements and extend service life.

Operate confidently in high-pressure and high-temperature environments, including those with corrosive and flammable substances, as well as potentially explosive atmospheres.

± 1.6% for liquids, ± 2.0% for gases

Fitting: Stainless steel 1.4404/1.4571 Float: Stainless steel 1.4404/1.4571, Hastelloy, PTFE

Use variable-area technology to monitor flow directly using a float mechanism for simple, visual indication and optional electronic output.

Configure with different flanges, liners, and float materials to meet requirements for the chemical, pharmaceutical, water, or power generation industries.

Add transmitters or limit switches for process monitoring and automation compatibility.

The SITRANS FVA250 operates on the float principle. The flowing medium lifts a conical float inside a measuring ring, increasing the ring gap until equilibrium is established between the buoyant force of the medium and the weight of the float. The height of the float is directly proportional to the flow rate. This movement is transmitted magnetically to a display unit outside the measuring tube, providing a direct reading on the scale without the need for an external power source. For process monitoring and control, the device can also be equipped with a transmitter (MEM) featuring 4–20 mA and HART output, PROFIBUS PA, or limit switches.

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