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1. What are the technical characteristics of a turbine flowmeter?
A turbine flowmeter is a flow meter with many advantages. In summary, it has the following characteristics.
(1) High accuracy. The accuracy of a turbine flowmeter ranges from 0.5 to 0 1) About%. Within the linear flow range, even if the flow rate changes, the accuracy of the cumulative flow rate will not decrease. In a short period of time, the reproducibility of the turbine flowmeter can reach 0.05%.
(2) The range ratio of the turbine flowmeter can reach 8-10. Under the same caliber, the maximum flow value of the turbine flowmeter is greater than many other flowmeters.
(3) Strong adaptability. The turbine flowmeter can be made into a closed structure, and its speed signal is non-contact measurement, so it is easy to achieve high pressure resistance design.
.(4) Digital signal output: The vortex shedding wheel flowmeter outputs a pulse branch land impulse digital signal proportional to the flow rate. It has the advantages of accuracy not decreasing during transmission, easy accumulation, and easy input into computer systems.
2. What are the differences between vortex street and turbine flowmeter??
The difference between a vortex flowmeter and a turbine flowmeter mainly lies in their working principle, applicable medium, cost, and application scenarios, as follows:
1. Differences in working principle. Vortex flowmeter: When fluid flows through non streamlined obstacles, periodic vortices (vortex streets) will form behind the obstacles.
. The vortex frequency is directly proportional to the fluid velocity, and the flow rate can be calculated by measuring the frequency. The formula is: f=K
2. Differential vortex flow meters suitable for resolving quality issues: liquids such as water, oil, alcohol, chemical raw materials, etc. Gases: air, oxygen, nitrogen, natural gas, coal gas, etc. Steam: saturated steam, superheated steam. Characteristics: Strong adaptability to fluid types, capable of covering multiple media. Turbine flowmeter: gases: air, nitrogen, oxygen, hydrogen, biogas, natural gas, etc. Steam: Suitable for steam flow measurement. Liquids: Clean, low viscosity liquids (such as those in the petroleum, food and beverage, and pharmaceutical industries). Characteristics: High requirements for fluid cleanliness, high viscosity may affect measurement accuracy.
III. Differences in Cost and Application Scenarios of Hebe family Vortex flowmeter: Cost: slightly higher than turbine flowmeter.
. Advantages: Simple and sturdy structure, no movable parts, high reliability. Easy installation and maintenance, wide measurement range, and high accuracy. Strong anti vibration performance, capable of filtering out interference signals. Application scenarios: Industrial pipelines, thermal systems, chemical industry. Complex working conditions in various fields such as gas, steam, and liquid. Turbine flowmeter: Cost: relatively economical. Advantage: High mea
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