The glass tube rotor flowmeter has a simple structure and a glass tube rotor flowmeter. It is easy to use and has the disadvantage of low pressure resistance and a greater risk of fragility of the glass tube; suitable for small diameters and low flow rates; low pressure loss. Also known as fixed displacement flowmeter, referred to as PD flowmeter, the flow meter is the highest accuracy type. The mechanical measuring element is used to continuously and continuously divide the fluid into a single known volume part, and the total volume of the fluid is measured according to the number of times the measuring chamber is repeatedly filled and discharged. Can be divided into elliptical gear flowmeter, scraper flowmeter, double rotor flowmeter, rotary piston flowmeter, reciprocating piston flowmeter, disc flowmeter, liquid-sealed drum flowmeter, wet gas meter and membrane gas meter, etc. . Glass tube rotor flowmeters are classified according to their measuring elements. They are often used for total measurement of expensive media (oil, natural gas, etc.). Glass tube rotor flowmeters are ranked as the three most used flowmeters with differential pressure flowmeters and float flowmeters.
In 1990, the output (excluding domestic gas meters) was estimated to be 340,000 units. In recent years, industrial sales of PD tube flowmeters (excluding domestic gas meters and domestic water meters) in developed countries of glass tube rotor flow meters accounted for 13% to 23% of flow meters; The country accounts for about 20%. The elliptic gear type and the waist-wheel type account for about 70% and 20%, respectively. The main types of speed flowmeters are glass tube rotor flowmeters. Multi-blade rotors (turbines) are used to sense the average flow velocity of the fluid. From, and to derive the flow or total meter. Can also be made monolithic. Generally, it consists of two parts: a sensor and a display. As one of the ten types of flowmeters, turbine flowmeters and volumetric flowmeters, Coriolis mass flowmeters are called three types of flowmeters with the best repeatability and accuracy. Products. Its products have developed into a multi-variety, multi-series mass production scale. High accuracy, among all flowmeters, it is the most accurate flowmeter; large-caliber meters are mostly used in water supply and drainage projects; small- and medium-caliber meters are often used in high-demand or difficult-to-measure applications, and glass tube rotor flowmeters have a wide range of applications. Air outlet cooling water control, paper industry measures pulp and black liquor, strong corrosive liquid in chemical industry, non-ferrous metallurgy industry's pulp; small and small calibers are often used in places with health requirements such as pharmaceutical industry, food industry, biochemistry. The fluid is alternately separated on both sides of the generator to release two series of regularly staggered vortex meters. The glass tube rotor flowmeter is a non-streamline vortex generator placed in the fluid.
Glass tube rotor flowmeter can be divided into stress type, strain type, capacitive type, thermal type, vibrating body type, photoelectric type and ultrasonic type according to the frequency detection method. But its rapid development, glass tube rotor flowmeter is the youngest type of flowmeter. It has become a universal type of flowmeter. An ultrasonic flow meter is an instrument that measures the flow by detecting the effect of fluid flow on an ultrasonic beam (or ultrasonic pulse).