The flow meter shows a high value
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The reading of the methanol feed flow meter in the dimethyl ether plant is high, while the actual flow rate is lower. However, the phenomenon that has occurred this time is different from usual. Under normal conditions, the opening degree of the control valve remains essentially unchanged; it is only the reading of the flow meter that is either too high or too low. This time, the flow meter reading was high, and the opening degree of the control valve increased accordingly. Confused? I’m seeking advice from those who are more experienced
Your question isn’t very clear; there are many reasons why a flow meter gives inaccurate readings. What type of flow meter is it? Is it related to your range and parameter settings? Are there any issues with the installation process as well? Does the medium fill the pipeline after the valve opening is increased? Are the parameters of the flow meter consistent with those of your system? Wait
First: What type of gauge is it for measuring the flow rate into the device! Second: It is not possible to simply correlate the valve position with flow rate; the magnitude of the flow rate is also directly related to the operating conditions of the process. Third, check whether the valve position of the control valve is normal, and determine whether prolonged exposure to fluid flowing through it will have an impact on the flow rate that can pass through the valve body! I’m not sure if what I said is correct!
As the opening of the control valve increases, the flow rate naturally goes up, and thus the reading becomes higher! But from what you’ve said, it seems you are suspicious of the flow meter; in that case, check the manual, and based on the type and characteristics of the flow meter, carry out inspections, calibrations, or checks on its settings! ! ! If the flow rate and control valve are part of an automatic circuit, then switch from automatic to manual mode first!