Turbine flowmeter is a kind of speed appearance, it has high precision, good repeatability, no zero drift, high range ratio, simple structure, few moving parts, high pressure resistance, wide measurement scale, small size, light weight, small pressure loss, convenient repair and other advantages, turbine flowmeter has high-quality bearings, specially planned deflectors, so it greatly reduces wear, is not sensitive to peak values, and can give reliable measurement variables even under harsh conditions. It has a wide range of application value in petroleum, chemical industry, metallurgy, food, biochemistry, city gas pipeline network and other industries.
How to choose a turbine flowmeter consider the following aspects;
1. According to the requirements of measurement intention:
It is required to select the instantaneous flow rate is still the cumulative flow rate (cumulative flow), the unit of flow display, measurement accuracy, repeatability, linearity, flow scale and scale, measurement temperature, pressure loss, temperature and pressure compensation, output signal characteristics and response time, etc. Different measurement targets have their own measurement intentions, and have different emphases in the performance of turbine flowmeters.
2. Requirements for measuring the properties of the medium:
Chemical corrosion and fouling, the chemistry of the fluid can sometimes be the determining factor in the selection of measurement methods and appearances. Some fluids can cause corrosion of the surface contact parts, scaling on the surface or electrolytic chemical reaction on the surface of the metal surface of the crystalline body.
3. Requirements for measuring the phase of the medium:
Depending on whether the measurement medium is a single phase change medium or a multiphase and multi-component flow, caution should be exercised. The turbine flowmeter can measure a single clean medium, and the electromagnetic flowmeter can measure the solid-liquid two-phase mixed medium.
4. Turbine flowmeter is a common type of flow, which can measure various gases and liquids. It uses a new intelligent planning to maintain high-precision measurement when it is used. The performance of the turbine flowmeter in use is superior, the service life is very long, and it has a strong anti-disturbance ability, in the time of use, the turbine flowmeter may encounter various electromagnetic disturbances, if the anti-disturbance ability of the flowmeter is not good enough, the measurement accuracy of the flowmeter may be affected when it is used.
When the turbine flowmeter is in use, the power consumption is small, and the stainless steel structure is selected, which can ensure that it has strong anti-corrosion performance during the application, and it is not simply corroded, and for some corrosive media, the turbine flowmeter can also be measured well and will not be limited. This turbine flowmeter is very small, if there is a failure during use, it is very simple to disassemble the flowmeter, which is convenient for the user to repair in time, and after daily use, when the flowmeter needs to be cleaned, the simple disassembly and assembly also makes the user more convenient to clean
5. Measurement accuracy requirements:
The requirements for the overall measurement accuracy requirements and the use of a specific flow rate are still significant changes due to temperature and pressure changes in a certain scale of measurement, and its values are generally low, and the differences between various gases are small. The commonly used accuracy grades of intelligent liquid turbine flowmeters are 1.0 and 0.5, which are higher than general rotor flowmeters, and it is a good choice for customers with high accuracy requirements.
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