Pressure Drop

• Coriolis Mass Flow Meters
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• Pressure Drop

At maximum flow rate, pressure, and temperature, the Coriolis mass flow controller exhibits a maximum pressure drop (ΔP) of no more than 0.13 MPa when measuring water.

When it comes to measuring the flow of liquids, it’s crucial to take into account the potential impact of cavitation, which refers to the formation of vapor bubbles in the liquid due to changes in pressure. In certain flow conditions, cavitation can occur and lead to abnormal behavior of the Coriolis flow controller. To mitigate this, it’s recommended to maintain a certain pressure at a distance of 5 times the diameter of the pipeline (5*DN) downstream from the controller. This pressure should not fall below the critical pressure (Pcr), which can be calculated as follows:

Рcr = 2.9 ΔР + 1.3 рν ,  kPa        (1.6)

where ΔP – pressure drop on the coriolis gas flow meter, kPa;

          рν – saturated steam pressure at working conditions (background information), kPa.

In case the calculated pressure using this formula surpasses the actual pressure within the pipeline, it is imperative to install a safety valve to boost the pressure.

Before undertaking any engineering design or application, please take a moment to review the pressure drop graphics provided below. They will be instrumental in ensuring that your project is successful and that you achieve optimal results.

Note: µ=cP(Viscosity)

Model: TFM 1001-T Size in 1/8 inch (3mm)

Model: TFM 1001-T Size in 3/8 inch (10mm)

Model: TFM 1001-T Size 1/2 inch (15mm)

Model: TFM 1001-TSize 1 inch (25mm)

Model: TFM 1001-T Size 1-1/2 inch (40mm)

Model: TFM 1001-U Size 2 inch (50mm)

Model: TFM 1001-U Size 3 inch (80mm)

Model: TFM 1001-U Size 4 inch (100mm)

Model: TFM 1001-U Size 6 inch (150mm)

Model: TFM 1001-U Size 8 inch (200mm)

Typical accuracy, turndown, and pressure drop with Model: TFM 1001-M size 2 inch(50mm)