One of the things to note about the installation of vortex flowmeter: Correct selection: instrument selection is an important work in instrument application. The diameter of the flowmeter shall be selected according to the actual process conditions. In general, the diameter of the selected instrument should not be less than 7m/S for the minimum gas flow rate, and the frequency of the liquid flow rate should not be less than 0.7 m/S for normal flow should be maintained at about 50Hz as far as possible, so that it is not easy to detect power frequency interference. This leads to measurement error. In actual production, the designed pipe is usually larger, so the actual fluid flow will be smaller. If the diameter of the vortex street is selected according to the original pipeline, the measurement will be inaccurate or even impossible to measure. Therefore, it is important to determine the lower limit of the vortex flowmeter. The most suitable vortex channel can be selected only when the lower limit flow is determined.
The vortex street flowmeter chooses to install note # 2: Effective measures are taken in the field environment: vibration ambient temperature vortex flowmeter, below 40 °C below T55 °C, if you love to produce equipment thermal radiation, heat insulation and ventilation measures should be taken. Environmental air: flow meters should not be installed in environments containing corrosive gases. Ventilation should be provided if necessary. Mechanical vibration and impact: Vibration produces interference signals. If the vibration and impact on the pipeline are very strong and the medium speed is double low, the interference signal may be greater than the flow signal, resulting in measurement error. Therefore, the flowmeter should be installed in a place with low vibration and impact. The vibration frequency of the installation position is 5-20hz, and the vibration acceleration is not more than 1G. Otherwise, vibration reduction measures should be taken.
Note 3: The installation point and the straight pipe segment require that the visual inspection of the flow and outflow of the pipe shall be level within the specified length of the straight pipe segment, and that the sensor shall be installed, to the extent possible, downstream and semi-open valve of the regulator. Under normal circumstances, no sensors may be installed after the expansion. Sensors may be installed vertically, horizontally or at any other angle, but the flow direction shall be bottom-up during vertical working tilt installation. Set pressure points and measurement points. The pressure points should be set outside the sensor 10D and the temperature should be set outside 5D.
Application of Electromagnetic Flow Meter in Sewage Industry.