5 aspects to consider when selecting a turbine flowmeter

The turbine flowmeter is a velocity instrument with the advantages of high accuracy, good repeatability, no zero drift, high range ratio, simple structure, few moving parts, high pressure resistance, wide measuring range, small size, light weight, small pressure loss, and easy maintenance. The turbine flowmeter has high-quality bearings and specially designed guide vanes, which greatly reduces wear and is insensitive to peak values. It can also provide reliable measurement variables even under harsh conditions. It has a wide range of use value in industries such as petroleum, chemical industry, metallurgy, food, biochemistry, and urban gas pipelines.
 



Choosing a turbine flowmeter that suits you needs to consider the following five aspects when selecting the model
: 1. According to the requirements of the measurement purpose:
whether to select instantaneous flow or cumulative flow (cumulative flow), the unit of flow display, measurement accuracy, repeatability, linearity, flow range and range, measurement temperature, pressure loss, temperature and pressure compensation, output signal characteristics and response time, etc. Different measurement objects have their own measurement purposes, and have different focuses on the performance of turbine flowmeters.
 
2. Requirements for the properties of the measurement medium:
chemical corrosion and scaling, the chemical properties of the fluid sometimes become the determining factors for selecting measurement methods and instruments. Certain fluids can cause corrosion of instrument contact parts, surface scaling or precipitation of crystals, and electrolytic chemical reactions on the metal surface.
 
3. Requirements for measuring medium phases:
Be cautious when measuring whether the measured medium is a single phase change medium or a multi-phase and multi-component flow. Turbine flowmeters measure single clean media, and electromagnetic flowmeters can measure solid-liquid two-phase mixed media, etc.
 
4. Requirements for compression system and other parameters:
When measuring gas, you need to know the compression coefficient value to obtain the fluid density under working conditions. The density of fluids with fixed components is calculated by pressure, temperature and compression coefficient; for fluids with changing components and working near (or in) the supercritical zone, online density measurement should be considered.
 
5. Measurement accuracy requirements:
It is necessary to clarify the overall measurement accuracy requirements and whether it is used at a specific flow rate or has significant changes within a certain flow range due to temperature and pressure changes. The value is generally low, and the difference between various gases is small. The commonly used accuracy levels of intelligent liquid turbine flowmeters are 1.0 and 0.5. This accuracy level is higher than that of general rotor flowmeters, and it is a good choice for customers with higher accuracy requirements.