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technical article
Use of Orifice Flowmeter
2011-12-23 13:49:48

Orifice flowmeter It is a differential pressure generating device for measuring flow rate. It can measure the flow rate of various fluids in the pipeline with various differential pressure gauges or differential pressure transmitters. The orifice plate flow meter throttling device includes an annular chamber orifice plate, a nozzle and the like. Orifice flowmeter throttling device and differential pressure transmitter

It can be used to measure the flow of liquid, steam and gas. Orifice flowmeter is widely used in petroleum, chemical, metallurgy, power, light industry and other departments.


The fluid filled with the pipeline, when they flow through the throttle device in the pipeline, the flow beam will form a local contraction at the throttle of the throttle device, thereby increasing the flow velocity and low static pressure, so it is generated before and after the throttle. The pressure drop, that is, the pressure difference, the greater the flow of the medium,

The greater the pressure difference before and after the throttle, the orifice flow meter can measure the flow rate of the fluid by measuring the pressure difference. This measurement method is based on the laws of energy conservation and flow continuity.


采用先进的微机技术与微功耗新技术,功能强,结构紧凑,操作简单, Intelligent throttling device (orifice flowmeter) is a new generation flowmeter that integrates flow, temperature and pressure detection functions and can automatically compensate for temperature and pressure. The orifice flowmeter uses advanced microcomputer technology and micropower consumption. New technology, strong function, compact structure, simple operation,

Easy to use.


Features

1. Orifice flowmeter throttling device structure is easy to replicate, simple, solid, stable and reliable performance, long service life and low price.


2. Orifice plate calculation adopts international standards and processing


3. Orifice flowmeters have a wide range of applications. All single-phase flows can be measured, and some mixed-phase flows can also be applied.


4. The standard throttling device can be put into use without actual flow calibration.

5. The integrated orifice plate flowmeter is simpler to install, without the need for a pressure pipe, and can be directly connected to a differential pressure transmitter and a pressure transmitter.


6. Features of Intelligent Orifice Flowmeter


7.Using imported monocrystalline silicon intelligent differential pressure sensor


8. High precision and perfect self-diagnostic function


9. Smart orifice plate flowmeter The range of the smart orifice plate flowmeter can be adjusted by self programming.


10. Intelligent orifice plate flowmeter can display cumulative flow rate, instantaneous flow rate, pressure and temperature at the same time.


11. In addition to the online and dynamic full compensation functions, the smart orifice plate flow meter also has self-diagnosis and self-setting range.


12. Equipped with multiple communication interfaces


13.High stability


14. Wide measuring range, greater than 10: 1


15.Technical index of intelligent orifice plate flowmeter


High accuracy: ± 0.075%


High stability: better than 0.1% FS / year


在使用中,产生误差的因素很多,所以要求计量技术人员加强计量系统在现场的安装要求和仪表选型以及软件组态,对产生的误差要及时地应用科学方法修正,保证天然气贸易 In the use of orifice flowmeters , there are many factors that cause errors. Therefore, measurement technicians are required to strengthen the installation requirements and instrument selection and software configuration of the measurement system on the site. Correct the scientific errors in a timely manner to ensure natural gas. trading

Settlement is up and running

1. High static pressure: 40MPa

2. No adjustment required for 5 consecutive years of work


3.Negligible effects of temperature and static pressure