Flow Meter

The precession vortex flowmeter is a kind of velocity flow meter, which can be used for the flow measurement of oil, steam, natural gas and other media, and realize the online automatic compensation of dynamic parameters such as pressure, temperature and compression coefficient, which can not only display various parameters on the spot, but also can transmit various signals far out.

Vortex flowmeter is widely used in various industrial environments, in view of some small problems commonly encountered in the installation of vortex flowmeter, Aister gives the following points, hoping to solve the problems encountered in the installation.

1, pulse vortex flowmeter is a kind of high measurement accuracy, simple installation, small maintenance, a wide range of meters, is currently widely used in petrochemical, metallurgy, textile, urban construction, energy and other industries.

The working principle of vortex flowmeter is to place a non-streamlined vortex generator in the fluid, so that the fluid is alternately separated on both sides of the generator, releasing two series of regularly staggered vortex flowmeter. In a certain range, the vortex separation frequency is proportional to the flow rate, and the vortex flowmeter can measure the flow rate of the medium by calculating the vortex separation frequency.

Vortex flowmeter is a commonly used flow meter, the use of any instrument is inseparable from daily maintenance and maintenance, whether it is its own failure or interference by external factors, we calmly respond to the occurrence of failure.

Vortex flowmeter is widely used because of its wide range, small pressure loss, medium accuracy, linear output, no moving parts, high reliability, small maintenance, medium low price, relatively high performance and price characteristics.

In the process of diameter selection of vortex flowmeter, special attention should be paid to the fact that the diameter of vortex flowmeter cannot be selected according to the original pipe diameter on site. The diameter of the vortex flowmeter should be determined according to the parameters in the pipeline such as the flow range of the medium in the pipeline, working temperature and working pressure, and then combined with the technical parameters of the vortex flowmeter.

The precession vortex flowmeter has certain advantages in the measurement of natural gas, which are specific?

Precession vortex flowmeter 5 performance characteristics:

Precession vortex flowmeter requirements for measured airflow conditions

1. The measured gas should be a single-phase, continuous round tube flow through the pipeline.

2, before the gas flows through the flowmeter, its flow rate must be parallel to the pipeline axis, no vortex flow.

3, the air flow should be subsonic, non-pulsating, and its flow rate changes slowly with time.

Electromagnetic flowmeter grounding problem

Notes in the use of electromagnetic flow:

1, because the induction signal voltage of the electromagnetic flowmeter is very small, it is easy to be affected by noise. The reference potential must be the same as the liquid being measured. The correct grounding of electromagnetic flowmeter is directly related to the accuracy and stability of measurement.

There are many things that need to be paid attention to in the installation of gas turbine flowmeter, such as: the need for good grounding, the need to install filters during installation and the requirements of the installation environment, etc. Only when we really understand its installation precautions, can we effectively ensure the measurement accuracy and service life of gas turbine flowmeter.

Vortex flowmeter common faults and solutions

Technical requirements and precautions for measuring natural gas with precession vortex flow meter

Vortex flowmeter is a new flowmeter successfully developed on the basis of Karman vortex principle. Vortex flowmeter is suitable for measuring the mass flow and volume flow of superheated steam, saturated steam, compressed air, general gas, water and low corrosive liquid. How to ensure the accuracy of vortex flowmeter measurement during installation?

There are often some error factors in the calibration and use of flowmeter coefficient, which affect the accuracy of gas metering. The following are the factors that affect the accuracy of the steam flowmeter.

As a very special medium, steam will show special phenomena and problems in the process of vortex flowmeter measurement. The key problem is that the vapor density value deviates too much from the design value, which brings significant measurement errors to the measurement results. At present, the mature density measuring instrument has not been successfully applied, which brings certain difficulties to the steam flow measurement.

The vortex flowmeter has a flow meter in the pipeline without output. The reasons for this failure and the corresponding solutions are as follows:

1. After power-on, there is fluid flow in the pipeline, but the vortex flowmeter has no signal output

Vortex flowmeter is widely used because of its wide range, small pressure loss, medium accuracy, linear output, no moving parts, high reliability, small maintenance, medium low price, and relatively high performance price characteristics.

Vortex flowmeter is a velocity flowmeter, which measures the volume flow rate in the working state. If you choose the table according to the volume flow rate, the mass flow rate provided by the customer should be converted into the volume flow rate under the working state, and then determine the diameter of the selected instrument against the volume flow parameter.

1, pulse vortex flowmeter is a kind of high measurement accuracy, simple installation, small maintenance, a wide range of meters, is currently widely used in petrochemical, metallurgy, textile, urban construction, energy and other industries.

As a very special medium, steam will show special phenomena and problems in the process of vortex flowmeter measurement. The key problem is that the vapor density value deviates too much from the design value, which brings significant measurement errors to the measurement results. At present, the density measuring instrument with mature technology has not been successfully applied, which brings certain difficulties to the steam flow measurement.

Vortex flowmeter is a kind of instrument device to measure the flow of pipeline fluid, and it works by the principle of velocity vortex. Vortex flowmeter has two kinds of volume and mass flow measurement, which can be selected according to the situation of the field.

The structure of the vortex flowmeter is relatively simple, only the sensor and the display instrument are composed of two parts, and the measurement accuracy and stability are also relatively stable.

Vortex flowmeter is mainly used for the flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media. There are special phenomena and problems in the process of measurement. One of the key problems is that the vapor density value deviates too much from the design value, which brings significant measurement errors to the measurement results. At present, the density measurement instrument with mature technology has not been successfully applied, which brings certain difficulties to the steam flow measurement.

The working principle of vortex flowmeter is to place a non-streamlined vortex generator in the fluid, so that the fluid is alternately separated on both sides of the generator, releasing two series of regularly staggered vortex flowmeter. In a certain range, the vortex separation frequency is proportional to the flow rate, and the flow rate of the medium can be measured by calculating the vortex separation frequency.

The insertion vortex flowmeter is mainly used for the flow measurement of large-diameter gas, liquid and steam medium in industrial pipelines. In order to ensure the accuracy of its measurement, the following points should be noted when installing:

The split vortex flowmeter is a kind of flowmeter suitable for measuring steam at high temperature, which can avoid the influence of interfering signals on the measurement of the instrument. So what are the characteristics of the split vortex flowmeter?