What Are Features and Applications of Orifice Plate Flow Meter

The orifice plate flow meter consists of a standard orifice plate and a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter, and pressure transmitter) to support the composition of a high-range ratio of differential pressure flow device. It can measure the flow of gas, steam, liquids, and other mediums. This device is widely used in petroleum, chemical, metallurgy, electric power, heating, water supply, and other fields for process control and measurement. The throttling device, also known as a differential pressure flow meter, consists of primary detection parts (throttle parts) and secondary devices (differential pressure transmitter and flow display instrument) and is widely used in gas applications. It has the features of simple structure, convenient maintenance and stable performance.


orifice flow meter

Main Features

▲Throttle structure is easy to copy, simple, firm, stable and reliable performance, long service life, low price.

▲ Orifice plate calculation using international standards and processing

▲Wide range of applications, all single-phase flow can be measured, part of the mixed-phase flow can also be applied.

▲Standard type throttling device can be put into use without real flow calibration.

▲Integrated orifice plate installation is more simple, and without pressure pipe. It can be directly connected to the differential pressure transmitter and pressure transmitter.

Intelligent Features

▲Imported monocrystalline silicon intelligent differential pressure sensor

▲High precision, perfect self-diagnostic function

▲Can simultaneously display cumulative flow, instantaneous flow, pressure, temperature.

▲Online, dynamic full compensation function, but also has a self-diagnosis, self-setting range.

▲With a variety of communication interfaces

▲High stability

▲Wide range, more than 10:1.

Intelligent Technical Indicators

▲High accuracy: ±0.075%.

▲High stability: better than 0.1%FS/year

▲Static pressure: 40MPa

▲Continuous operation for 5 years without adjustment

▲Negligible effect of temperature and static pressure

▲Resistant to high over-pressure

What's an Orifice plate flow meter?


Main Applications

Orifice plate flow meter and its wide range of applications, flow measurement technology and instrumentation applications are broadly the following areas.

Industrial Production Process

Flow meter is one of the major types of process automation instruments and devices, which are widely used in metallurgy, electric power, coal, chemical, petroleum, transport, construction, textile, food, medicine, agriculture, environmental protection, and people’s daily lives, as well as other areas of the national economy.

It is widely used in metallurgy, electric power, coal, chemical industry, petroleum, transport, construction, light textiles, food, medicine, agriculture, environmental protection, and people’s daily lives. It plays a significant role in the development of industrial and agricultural production, energy conservation, improvement of product quality, enhancement of economic efficiency, and management levels in the national economy.

In the field of process automation instrumentation and devices, the flow meter serves two major functions. It functions as an instrument for process automation control systems, and it measures the total amount of materials in the process.

Energy Measurement

Energy is divided into primary energy (coal, crude oil, coal bed methane, liquefied petroleum gas and natural gas), secondary energy (electricity, coke, artificial gas, refined oil, liquefied petroleum gas, steam) and energy-carrying substances (compressed air, oxygen,Nitrogen, hydrogen, water), etc. It is an important means of scientific management of energy, energy conservation and improve economic efficiency. Flow meters are an important part of energy measurement instruments. Common energy sources such as water, artificial gas, natural gas, steam and oil all use an extremely large number of flow meters. They are tools for energy management and economic statistics.

Environmental Protection Engineering

Smoke, waste liquids, sewage and other emissions of serious pollution of the atmosphere and water resources, a serious threat to human survival. National sustainable development as a national policy, environmental protection will be the biggest issue in the 21st century. To control the pollution of air and water, it is necessary to strengthen the management. Besides, the basis of management is the quantitative control of the amount of pollution.

China is a country that uses coal as its main source of energy, and millions of chimneys across the country are constantly emitting flue gas into the atmosphere. Flue gas emission control is an important project to eradicate pollution. Each chimney must have the installation of flue gas analysis instrumentation and flow meters, composing an even casket emission monitoring system. The measurement of flue gas flow poses significant challenges due to factors such as the varying chimney size and irregular shape, fluctuating gas composition, wide range of flow rates, presence of dirt, dust, corrosion, high temperature, lack of straight pipe sections, and so on.


The pipeline transport has long been there, but the application is not common. With the prominence of environmental issues, the characteristics of pipeline transport has attracted attention. Pipeline transport must be equipped with flow meters. They are essential tools not only for controlling, distributing, and scheduling, but also for safety supervision and economic accounting.


The 21st century will usher in the era of life sciences, where biotechnology, as a prominent feature of the industry, will experience rapid development. Biotechnology needs to monitor the measurement of many substances, such as blood, urine and so on. Instrumentation development is extremely difficult, a variety of varieties.

Scientific Experiments

Scientific experiments require not only a large number of flow meters, and the variety is extremely complex. Statistics show that a significant portion of scientific research requires over 100 types of flow meters. However, manufacturers do not mass-produce them or make them readily available for sale in the market. Consequently, many scientific research institutions and large enterprises have established special teams to develop customized flow meters.

Open Field

These areas for the open flow channel, generally need to detect the flow rate, and then project the flow rate. Flow meters based on physical principles and the fundamentals of fluid mechanics are common, but their instrumentation principles, structures, and usage conditions vary greatly.

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