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First, the type of glass rotor flow meter The glass rotor flow meter can be divided into: ordinary type, with ribbed tube type, small flow and small size, corrosion resistance, laboratory type, heat preservation type, alarm type There are also eight series with high pressure resistance.
Ordinary glass rotor flowmeters are widely used in chemical, petroleum, light industry, medicine, environmental protection, food and measurement testing, scientific research and other departments to measure the flow of single-phase non-pulsating fluids (liquid or gas).
Corrosion resistant glass rotameter has strong corrosion resistance and can detect acid (except hydrofluoric acid), alkali, oxidant and other corrosive gas or liquid flow, suitable for chemical, pharmaceutical, paper, sewage treatment Other industries.
According to the spectrum of the instrument series developed by the country, no matter which series, the maximum number includes 12 calibers from 1 mm to 100 mm. The flow rates that can be measured are: liquid (water) 0.1 ml/min to 40 cubic meters/hr , gas (air) 1 ml/min to 1000 cubic meters/hour. The general caliber of glass rotameters used for environmental protection instruments must not exceed 10 mm, and the measured flow rate is in the range of small flow rates.
Second, the selection of glass rotor flowmeter can be considered from the following aspects.
1. Choose according to price. In general, the high accuracy and high price. According to the purpose of measuring the instrument to select the accuracy level, if you only need to control the measurement of the throughput of the medium, the trial operation adjustment, after the need to always stabilize the throughput, then the accuracy is more secondary.
2. The object of measurement. That is, measuring the type of medium, pressure, chemical properties. The temperature and so on. Such as liquid medium, gas medium, whether it is corrosive, for corrosive medium should choose corrosion-resistant glass rotor flowmeter.
3. The flowmeter itself performance. Generally speaking, after the above conditions are determined, if the price does not change significantly, the needle valve may be preferentially placed on the upper part of the flow meter; if there is a large flow hole, the flow rate may be directly scaled; the structure is simple; the external size is small. And so on. If it is a small flow range, you can choose ball float type, because it is stable when measuring, not easy to dust, high precision, good interchangeability.
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Beit hopes to provide you with effective and reliable measurement solutions and measurement equipment based on our years of development, production and system design experience. At the same time, we can design and manufacture special products to meet customer needs.
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Beth introduces glass rotor flowmeter selection
Glass rotor flowmeters are instantaneous flow measuring instruments. Because of its use, it is easy to install, convenient in structure and reading, and low in price. It is more convenient and intuitive than other instruments. Therefore, it is widely used in various industrial sectors as well as scientific research units.