The principle of measuring flow can be as simple as it sounds, but the process can be quite complex. You must choose the correct type of flow meter that can measure low, medium, and high flows. It is also important to ensure the meter’s compatibility with its size and environmental and hazard-free environment. The meter should be calibrated properly according to the actual process conditions, as this is critical to ensure undisturbed operations.
PD meter
A positive displacement (PD) meter measures the volumetric flow of gases, liquids, steam, and natural gas. It measures the pressure difference between upstream and downstream components to determine flow rates. This type of meter is available here https://www.silverinstruments.com/ in a variety of sizes and configurations. In addition, some models include transmitters, which can help operators measure flow accurately. Here are some of the most common uses for a PD meter for gas flow.
Metal tube rotameter
A metal tube rotameter for gas flow metre is a popular choice. They do not require any electrical power and have the added benefit of enabling low flow rates. Gas and liquid flow rates as low as 1 ml/min can be measured. These rotameters are also flexible and can be converted to measure other fluids. Recabling is also very easy, as a CD software package is provided.
Variable area rotameter
A variable area rotameter for gas flow metre is designed for use in applications where a measurable flow rate is required. These devices are available with various floats for different gases. They need to be sized accordingly and must be calibrated to the flow rate required by the system. This article explains how to choose a suitable rotameter for a particular application. Read on for more information.
Positive displacement meter
A positive displacement (PD) meter is used to measure the amount of gas, water, or fuel flowing through a system. These meters are also widely used for hydraulic testing and precision test stands. They can measure the flow of high-viscosity liquids, and they are also useful for measuring pressure and flow rates of fuel. Some models require a small amount of lubricating fluid to run properly. However, they are not ideal for use in corrosive and impure gases.
Averaging pitot tube
Averaging Pitot tubes are the primary measuring instrument for gas flow meter. They create a differential pressure across the pipeline, which estimates the fluid flow rate. This pressure is proportional to the velocity of the fluid in the pipeline and the square of the pressure, which is the volumetric flow rate. An average Pitot tube can measure gas flow rates of up to 5,000 l/s without any trouble.
