1.How does Kaifeng vortex flowmeter work? The advantages of Kaifeng vortex flowmeter and precautions for use

1.1　The measuring element of vortex flowmeter has simple structure, reliable performance, long service life and low maintenance.

1.2　Vortex flowmeter has a wide measuring range, and the range ratio can generally reach 1:10.

1.3 The volume flow of the vortex flowmeter is not affected by the thermal parameters such as the pressure, temperature, density or viscosity of the fluid being measured, and generally does not need separate calibration, and can measure the flow of liquid, gas and steam.

1.4　The vortex flowmeter has no moving parts or throttling parts that hinder the flow of fluid, so the pressure loss caused by it is small.

The accuracy of 1.5　 vortex flowmeter is high, up to 1.0%.

3. Precautions for the use of vortex flowmeter

2.1 　 When the vortex flowmeter is working normally, there are certain requirements for the lower limit of the flow rate. When the vortex flowmeter is opened, the flowmeter diameter cannot be selected according to the original pipe diameter, but the viscosity and density of the fluid should be considered, according to the smaller flow rate , Larger flow, common flow, etc. to select the flow diameter of the flowmeter, and make the common flow more than 20% of the measurable range.

2.2 　 When the vortex flowmeter leaves the factory, the manufacturer has set the parameters of the flowmeter according to the order requirements, and the user does not need to modify it. But if you order a vortex flowmeter with its own display meter, first, the user can set some parameters more accurately according to the on-site working conditions or when changing the pipeline conditions, so as to get more accurate measurement results, and the second is the user The instantaneous flow and cumulative flow can be read directly from the meter on site.

2.3　The main parameters set by the user in the meter head are: display mode, fluid type (gas, liquid and steam), flow unit, working condition pressure, working condition temperature, working condition density, standard state pressure, standard state temperature, etc. Some other system parameters, unless you have a deep and accurate understanding, generally cannot be changed at will.

2.4　Vortex flowmeter is a velocity flowmeter, so the flow rate is actually the volume flow rate under working conditions

3. Precautions for installation of vortex flowmeter

The correct installation of the vortex flowmeter can obtain accurate measurement results.

3.1 Vortex flowmeters should not be installed in environments with large temperature changes, corrosive gases, and large electromagnetic interference. The flowmeter should avoid vibrating objects such as motors, water pumps, etc., and be installed on a pipeline with less vibration. If the vibration is greater, a pipeline support must be added.

3.2 Note that the direction arrow on the flowmeter must be consistent with the fluid flow direction during installation.

3.3 The vortex flowmeter is a velocity measuring instrument, and its measurement accuracy is greatly affected by the changes in the fluid velocity distribution in the pipeline. In order to ensure accurate measurement, a certain length of straight pipe section must be guaranteed before and after the flowmeter.

? ? Want to know more about precession vortex flowmeter, thermal gas mass flowmeter, electromagnetic flowmeter, vortex flowmeter,

? ? For more knowledge of turbine flow meters and ultrasonic flow meters, please pay attention to the official website of Hollysys Industrial Control Instruments.