What to look for when measuring steam and compressed air with vortex flowmeters

Time: 2024-07-15
Equipment Configuration:vortex flowmeter

Vortex flowmeter has no moving parts, reliable operation, good measurement accuracy, long service life, and can accurately measure the instantaneous and cumulative flow of liquid in a wide range of flow rate.

Project Overview

Vortex flowmeter is widely used in petroleum, chemical, metallurgy, paper and other industries. It is a flowmeter that can measure both liquid and gas. Vortex flowmeter in the measurement of steam and compressed air is to pay attention to what problems?

一、Measurement of steam: use to avoid avoid mechanical vibration, perpendicular to the axis of the pipeline and vertical vortex generator axis of vibration known as the transverse vibration of the pipeline, this mechanical vibration of this effect in the flowmeter structural design can not be suppressed and eliminated. Vortex flowmeter signal on the flow field is also very sensitive to the impact of the flow, so to ensure that sufficient length of the straight pipe section, stable flow to achieve the necessary flow conditions of the vortex. Even the more vibration-resistant capacitive, ultrasonic type, to ensure that the fluid for the full development of unidirectional flow, but also can not be ignored.

Medium temperature also has a great impact on the use of steam flowmeter performance. In the measurement system, the sensor and the converter should be installed in a separate way, so as not to affect the reliability and service life of the instrument at high temperatures for a long time. Vortex flowmeter measurement range is large, generally 10:1, the lower limit of measurement and the upper limit of measurement is limited by many factors. Therefore, the flow rate range should be calculated, accounting, according to the fluid flow rate selection. The use of the site environmental conditions are complex, selection in addition to pay attention to the environmental temperature, humidity, atmosphere and other conditions, but also consider electromagnetic interference.

二、Compressed air is an important power source. It has a large vibration, the gas contains water, pulsating flow and other characteristics, the use of vortex flowmeter can effectively detect the flow of compressed air, the vibration resistance, the advantages of non-clogging, for the medium has the characteristics of the pulsating flow, we recommend that the customer in the compressor outlet to set up a buffer tank to filter out the pulsation, vortex flowmeter is installed in the buffer behind the installation, or the flowmeter installed away from the source of the pulsation of the place, so that the use of the process pipe This can make use of the process pipeline's gas capacity and its pipe resistance to form a low-pass filter to attenuate the pulsation.

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