The main reason for measurement errors in vortex flowmeters

Vortex flowmeter has been widely used in industrial production, and its role is more and more important. If the measured data is inaccurate in the use of vortex flowmeter, the first thing to do is to judge that the aspect is incorrect. Flow error, below, and everyone to discuss the main reasons for the vortex flowmeter measurement error:

1, the impact of temperature on the measurement

The temperature will affect the general flowmeter measurement medium. The temperature will influence the density and viscosity of the medium, which will make the measurement result inaccurate and error. Elimination of this effect is generally a correction of the K-factor.

2, the problem of selection

The actual sizing should choose the smallest possible caliber to improve the measurement accuracy. For example, a vortex street pipeline is designed to be used by several equipments. Because some of the equipment of the process is sometimes not used, the current actual usage flow rate is reduced, resulting in actual use. The original design selection aperture is too large, which is equivalent to the increase in the lower limit of the measurable flow, the process pipeline can not guarantee when the flow is small, can also be used when the flow is large, because if you want to re-transformation is sometimes too difficult. Process conditions change only temporary. The re-tuning of the parameters can be combined to improve the indication accuracy.

3, the vortex flowmeter vortex generating body flow surface accumulation of the impact

If there are viscous particles in the fluid to be measured, they may gradually accumulate on the flow-in surface of the vortex generator, causing changes in its geometry and dimensions, and thus the flow coefficient will change accordingly. Therefore, it is necessary to pay attention to cleaning during use.

4, the installation of the problem

The installation problem is mainly the length of the straight pipe section in front of the vortex flowmeter sensor. If the length is not enough, the measurement accuracy is affected.

Changzhou Chengfeng Flow Meter Company As a flow meter manufacturer, we strive to learn from others' new technologies, introduce advanced equipment, develop more technologies, and meet more customer needs. Chengfeng Flowmeter has also gradually sold its products abroad, and is widely favored by customers.