What is difference between rotameter and flow meter?

Rotameter and Flowmeter are two different devices used to measure the flow rate of fluids. Here are some differences between them:

1. Principle: Rotameter works on the principle of the variable area, whereas flowmeter works on the principle of different methods such as electromagnetic, ultrasonic, and others.

2. Accuracy: Flowmeter has higher accuracy compared to Rotameter due to the use of advanced technologies in flowmeter.

3. Fluid: Rotameter is used for measuring low viscosity fluids such as water and gases, and flowmeter is used for measuring different types of fluids, including high viscosity fluids like oil.

4. Range: Rotameter has a limited range of measurement, while Flowmeter has a wide range of measurement options.

5. Installation: Rotameter can be installed in any position (horizontal, vertical, or inclined) without affecting the accuracy of measurement. Flowmeter needs a specific installation location for accurate measurement.

6. Cost: Rotameter is relatively cheaper than many types of flowmeters, which vary in price depending on the type and technology used.

In summary, Rotameter is a simple and cost-effective device for measuring the flow rate of low viscosity fluids within a limited range, while Flowmeter is a more accurate and versatile device that can measure the flow rate of different types of fluids over a wide range.