Which device is listed as being used to measure flow alongside velocity meters and mass flow meters?

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Multiple Choice

Which device is listed as being used to measure flow alongside velocity meters and mass flow meters?

Flow can be measured using different principles: velocity meters gauge how fast the fluid moves, mass flow meters measure the mass passing per unit time, and optical (optic) meters use light-based methods to infer flow. In the WTPO materials, optic meters are listed as the third category of flow measurement alongside velocity meters and mass flow meters, providing a non-contact, light-based approach to determine flow. Although turbine, magnetic, and ultrasonic meters are common flow meters themselves, the option that fits the trio described in the question is optical meters.

Flow can be measured using different principles: velocity meters gauge how fast the fluid moves, mass flow meters measure the mass passing per unit time, and optical (optic) meters use light-based methods to infer flow. In the WTPO materials, optic meters are listed as the third category of flow measurement alongside velocity meters and mass flow meters, providing a non-contact, light-based approach to determine flow. Although turbine, magnetic, and ultrasonic meters are common flow meters themselves, the option that fits the trio described in the question is optical meters.

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