The float water level gauge is designed and worked according to the Archimedes buoyancy principle. Due to the wide range of applications in food, petrochemical, environmental protection and other industries, the working conditions of this type of position are complex and diverse. If you choose the wrong one, it will be inaccurate and cannot be used for accurate liquid level measurement. , Then, when buying a float water level timer, how to choose the right one?First of all, the choice of the sub-zone water level gauge should be determined according to the physical and chemical properties of the tested medium.If you choose the channel, flow range, lining material, electrode material, output current, etc. of the purchased float level gauge, you must meet the characteristics of the test medium and the flow measurement requirements.Secondly, if you choose a float level gauge, you must consider the density of the tested medium and ensure that there is no magnetic material in the application environment.The float level gauge uses the principle of magnetic coupling and the principle of buoyancy, so it is necessary to consider the density of the measured liquid medium and whether there are magnetic substances in the measured liquid. Magnetic substances in the measured liquid will affect the normal operation of the liquid level measurement.Third, when the tested medium contains a lot of impurities, it is best not to use the float gauge for liquid level measurement.The auxiliary zone water level gauge works according to the principle of buoyancy, and the auxiliary zone moves up and down according to the change of the water level in the container to realize the liquid level measurement and control. The impurities in the medium are easy to adhere to the floating ball, which affects the smooth progress of the liquid level measurement. Therefore, when there are many impurities in the test medium, the float level gauge should not be used to measure the float level.Finally, the material of the float gauge and the length of the connecting rod should be determined according to specific working conditions.
If the measured liquid is a common corrosive liquid, the use of 304 or 316L material can meet the measurement needs. However, if the corrosiveness of the measured liquid is strengthened, the probes, floats and process connections of the float level gauge require PP or PTFE materials. In addition, because the floating ball needs to be restricted to move up and down, the length of the connecting rod must be greater than the range, and the connecting rod specification does not match the range. Therefore, the user must confirm with the manufacturer that the float level gauge must select the connecting rod when purchasing the float level timer. The specific length.
Post time: 21-09-21