What are the fundamental differences between glass rotor flow meters and metal rotor flow meters?

I don't know if everyone has much understanding. What are the essential differences between glass rotor flow meters and metal rotor flow meters? Next, let's take a look together and see what it all looks like?

The measurement accuracy of glass rotor flow meters is generally lower than that of metal rotor flow meters. The metal rotor flowmeter has high measurement accuracy and a large range, so it has been widely used in some industries and places that require high measurement accuracy. The float position height of a glass rotor flowmeter is related to the density and buoyancy of the medium, while the float position height of a metal rotor flowmeter is related to the conductivity and magnetic permeability of the medium.

Reliability and safety are different. When choosing to use a flow meter, we need to comprehensively consider factors such as actual needs and working environment to choose a suitable flow meter for ourselves.

Glass rotor flow meters and metal rotor flow meters are two common types of flow meters, and they have some obvious differences in essence.

(1) Glass rotor flow meters are usually used to measure small flow rates, with a measurement range of 1-100ml/min, a maximum pressure of 10bar, and a maximum temperature of 150 ℃. Glass rotor flow meters are relatively inexpensive and have good visibility, allowing for intuitive observation of fluid flow. In addition, it also has the advantage of being easy to clean and replace, and is suitable for measuring some less corrosive liquids.

(2) The disadvantage of glass rotor flow meters is that their measurement accuracy is low, they are greatly affected by temperature and pressure, and are prone to damage. Therefore, they are not suitable for high pressure, high temperature, or corrosive fluids.

In contrast, metal rotor flow meters are more suitable for working under high flow rates, high pressures, and high temperatures. Its measurement range is usually between 10-10000ml/min, with a maximum pressure of 30bar and a maximum temperature of 300 ℃. The metal rotor flowmeter has high measurement accuracy, good stability, and can adapt to various harsh working environments. In addition, it also has explosion-proof, waterproof, anti-corrosion and other characteristics, which can be used in various complex environments.

However, metal rotor flow meters are relatively expensive and difficult to clean and replace. In addition, it is not as intuitive as a glass rotor flowmeter and cannot directly observe the flow of fluid.

In summary, both glass rotor flow meters and metal rotor flow meters have their own advantages and disadvantages. When choosing to use a flow meter, it is necessary to choose a suitable flow meter based on actual needs and usage conditions. For example, when measuring liquids with low flow rate, low pressure, and low temperature, a glass rotor flowmeter can be chosen; When measuring high flow, high pressure, and high temperature liquids, a metal rotor flowmeter can be chosen.

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