Definition

1. Noun:
   • Current meter / Flowmeter: A scientific instrument used in physics and hydrology to measure the speed or velocity of a fluid flow, such as water in a river or air in a duct.
   • Rheometer: In a more specialized physics or materials science context, an instrument for measuring the flow properties of fluids, particularly those with complex viscosity.

Usage Examples

• Noun:
  • Các nhà khoa học dùng lưu tốc kế để đo tốc độ dòng chảy của sông. (Scientists use a current meter to measure the flow speed of the river.)
  • Lưu tốc kế là thiết bị quan trọng trong phòng thí nghiệm vật lý chất lỏng. (The flowmeter is an important device in a fluid physics laboratory.)

Advanced Usage

• The term is technical and primarily used in scientific, engineering, and environmental monitoring contexts. It is not common in everyday conversation.

Variants and Related Words

• Tốc kế (n): Tachometer or speedometer (a device for measuring rotational speed or velocity of a vehicle). Note: This is a related but distinct term; "lưu tốc kế" specifies flow.
• Đồng hồ đo lưu lượng (n): Flow rate meter (often indicates volume per time, not just speed).

Synonyms

• Flowmeter: A general term for an instrument measuring the flow rate of a fluid.
• Current meter: Specifically for measuring the velocity of a fluid current.
• Rheometer: An instrument measuring the flow and deformation of matter.

Related Terms

• Lưu lượng kế: Flow rate meter. While "lưu tốc kế" measures speed (velocity), a "lưu lượng kế" measures volumetric or mass flow rate.
• Vận tốc kế: Velocimeter; a general instrument for measuring speed, which can be applied to fluids or objects.