Coriolis Flow Meter for Natural Gas

The precise measurement of natural gas is directly related to trade handover, production process control, and carbon emission monitoring, and is the key to the efficient and fair operation of the energy industry. Among numerous measuring devices, the Coriolis natural gas flowmeter has become the preferred solution for high-precision measurement in the industry due to its unique advantage of directly measuring mass flow rate. This article will give a detailed introduction to Coriolis flow meter working principle, advantages, applications, and installations, helping you fully understand the value of Coriolis gas flowmeter.

Working principle of Coriolis natural gas flowmeter

Coriolis natural gas flow meter principle

Coriolis flowmeter operates based on the Coriolis effect, with the core flow sensor being the vibration measuring tube. When natural gas flows through a vibrating pipeline, the Coriolis force generated by the natural gas (NG) will change the vibration frequency or phase of the pipeline. The flow sensor detects this change and directly obtains the mass flow rate of the gas.

Compared to volumetric gas flow meters,like turbine gas flow meter, vortex flow meter, it does not require additional temperature and pressure compensation to output true mass flow data, and has lower pressure loss, adapting to the measurement characteristics of natural gas.

The core advantage of natural gas Coriolis mass flow meters lies in bypassing indirect conversion and directly obtaining the most accurate mass value, which is also the core of the Coriolis gas measurement principle.

Advantages of Coriolis natural gas flowmeter

As a high-precision gas flowmeter, the advantages of Coriolis products are very prominent:

• It can simultaneously measure mass flow rate, density (only for liquid measurement), and temperature, and achieve multi parameter monitoring with one machine.

  The measurement accuracy can reach ± 0.5% or above for natural gas measurement, fully meeting the strict requirements of natural gas trade handover or custody transfer purpose.

• No need for installation conditions of upstream and downstream straight pipe sections, more flexible on-site layout.
• There are no moving parts inside, with extremely low daily maintenance and stable long-term operation.
• It can adapt to natural gas working conditions with moisture and component changes, and has stronger applicability.
• Support measurement under ultra-low temperature conditions, capable of directly measuring liquid natural gas (LNG), covering all forms of gas-liquid media.
• Support high-pressure natural gas measurement, which can meet high-pressure conditions such as long-distance pipelines and wellhead gas.

High pressure natural gas flow meter

Compared with thermal and ultrasonic flow meters, Coriolis flow meters have more advantages in accuracy, stability, and multi-media adaptability, which is an important reason why Coriolis natural gas flow meters have become the preferred choice for high-end metering scenarios.

Measurement of ultra-low (cryogenic) temperature liquid natural gas flow rate

Cryogenic LNG flow measurement

One unique advantage of Coriolis flowmeter is its ability to accurately measure ultra-low temperature liquid natural gas (LNG). Ordinary gas flow meters are difficult to cope with the ultra-low temperature environment of -162 °C, while specialized Coriolis flow meters use low-temperature resistant materials and special structural design, which can directly measure the mass flow rate of liquid natural gas without gasification conversion, greatly simplifying the measurement process of LNG receiving stations and refueling stations, and achieving full coverage of gas and liquid natural gas scenarios.

Main application for Coriolis type natural gas flow meter

Coriolis natural gas flow measurement applications

The application of Coriolis flowmeter covers the entire natural gas industry chain, with core scenarios including:

Trade handover measurement: suitable for financial measurement of CNG, LNG, and long-distance pipeline natural gas, it is a standard natural gas trade handover flow meter;
Industrial combustion control: providing accurate fuel gas supply data for boilers and industrial burners;

Gas ratio: Accurate ratio measurement for natural gas and hydrogen gas mixtures.

In the oil and gas industry, it has become the core measuring equipment for the entire process of natural gas extraction, transportation, and distribution due to its high reliability.

Installation and selection

To ensure the effectiveness of natural gas measurement, three points should be noted when selecting and installing:

firstly, choose the appropriate installation direction based on the gas working conditions;

Secondly, priority should be given to using corrosion-resistant materials such as 316L stainless steel and Hastelloy;

The third is to combine the low density of natural gas to avoid selecting equipment that is too small, while matching the corresponding pressure level and flow range. Proper selection of Coriolis natural gas flow meters is the foundation for ensuring long-term stable operation.

Coriolis natural gas flow meter limitations

Coriolis flowmeters also have certain limitations: the initial procurement cost is higher than that of orifice plates and turbine flowmeters or other types flow metrs; Pressure loss will increase under high flow conditions; Sensitive to two-phase flow containing liquid.

Summary

The Coriolis natural gas flowmeter has become a reliable choice for natural gas measurement due to its direct mass measurement, ultra-high precision, and strong adaptability. Compared to initial investment, its low maintenance and high precision characteristics can effectively reduce long-term comprehensive usage costs. If precise measurement is required, it is recommended to complete professional selection based on working conditions, or refer to the product technical manual to determine the adaptation plan.