What are the factors affecting the accuracy of vortex flow meter?

sales01@cxflowmeter.com

Vortex flowmeters are mainly used for flow measurement of medium fluids in industrial pipelines, 

such as gas, liquid, steam and other media. It is characterized by small pressure loss, large measuring

 range and high precision. When measuring volume flow under operating conditions, it is virtually 

unaffected by parameters such as fluid density, pressure and temperature. There are no moving 

mechanical parts, so reliability and maintenance costs are low. Instrument parameters can be 

long-term stable. The instrument adopts piezoelectric stress sensor, which is reliable and can work 

in the working temperature range of -25℃~320℃. There are analog standard signal and digital 

pulse signal output, which is convenient to use with computer digital system. It is a relatively 

advanced and ideal flowmeter.

 1) The vortex flow meter is not suitable to be installed in the occasion of strong vibration, but in the

 occasion of frequent changes of the magnetic field, the vortex flowmeter will measure the signal 

output of the normal value, which is the common sense of the user. Practice has proved that in the 

field without airflow , when the vortex flow sensor is in a changing magnetic field, the vortex flow 

sensor will sense an error signal and output at the moment when the magnetic field changes. After

 the change is over, the meter is in a steady state. When there is a magnetic field, the meter will 

output a normal signal.

 2) Due to the high temperature and high humidity of coke oven gas when it leaves the factory, 

there will be moisture in the gas during transportation. The airflow moves the water back and forth, 

creating a pulsating flow. When the vortex flow sensor is in this fluid state, the output data 

fluctuates greatly, and the fluctuation is large, which cannot reflect the production state at all.

 3) Because the coke oven gas has many impurities, it is easy to crystallize, and the impurities 

condense on the sensing head, resulting in inaccurate measurement. As the temperature increases, 

the impurities volatilize, the sensitivity increases, and the signal increases; on the contrary, it 

decreases. This can lead to data instability.

 4) The pressure line is not firm during the instrument wiring process, resulting in intermittent 

signals during the transmission process.

 5) The ground wire of the instrument does not meet the specification requirements, so that the 

50Hz interference in the strong current enters, and the normal signal is output when the normal 

signal is 50Hz, otherwise the error signal is output.

If you want to know more about the parameters and quotation of vortex flowmeter, please contact 

winny:sales01@cxflowmeter.com