Flowmeter quality and service life Many consumers do not know the quality and service life of flow meters.
Choosing the right instrument panel model is the top priority for ensuring the life and accuracy of the flowmeter. Pay attention to the options of negative pressure and high temperature resistance. The negative pressure of the flow meter is the pressure test level. This value should be slightly higher than the pressure of the measured medium. Generally, a value of 1 to 25 times can ensure that leakage or accidents are not easy to occur. The selected measurement range category is the limit of the gauge of the instrument panel. Larger selections will reduce the accuracy of the measurement. Smaller selections are very easy to load and destroy the flowmeter. Should be elected in the specific operation ** the total flow of 1.2-1.33 times. Because the measured medium is different, the life of the flowmeter will be reduced. Here also remind everyone to use suitable materials. Let's compare the two typical cases in the medium with the electromagnetic flowmeter.
1. Medium: drilling mud, slurry, wastewater.
This kind of medium cannot be measured with a throttling device. Due to the poor fluidity, there are small blocks inside, and the stone is very easy to block and high loss. If you use an electromagnetic flowmeter, pay attention to the choice of lining and electrodes. The lining must be wear-resistant and ductile. Polyurethane vulcanized rubber lining is the best choice. The electrode is 316L electrode.
2. Medium: boiling sulfuric acid, hydrochloric acid, sulfuric acid and various solvents.
Such high-corrosive media throttling devices and vortex flow meters are not suitable for measurement. Because the cost of engineering cost is too high and unstable. The electromagnetic flowmeter is lined with polytetrafluoroethylene, and the electrode uses a tantalum electrode, which can consider the requirements of the left and right measurement media. However, make sure that the installation must exceed the specifications. If infiltration leakage occurs, it will endanger the service life of the flowmeter.