The mass flow meter measures a lower flow rate
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The measuring medium was oil and gas field water, and it was zeroed out again; the measured value was lower than normal. The control valve is operated by liquid level control; the liquid level setting was recently adjusted (from 1200mm to 1400mm). Could this be the reason? Experts, please help analyze it.
OP, is the control valve direct-acting or reverse-acting? If the liquid level is controlled from 1200 to 1400, the opening of the control valve decreases, and the flow rate naturally drops as a result.
Is it correct to understand that the liquid level control value affects the opening degree of the control valve? Also, how can I find a balanced value to meet my traffic requirements?
The set liquid level control value has absolutely no relation to the value measured by the flow meter; there isn’t even the slightest connection between them. Logic requires causal relationships, and when considering issues one must not act irrationally or take detours, jumping from one topic to another without reason. . Since the zero-point measurement is accurate, the deviation is likely to be of a proportional nature, isn’t that right? Two high and low points can be taken for separate comparison and verification. If so, use the ratio coefficient for the corrective adjustment. . Don’t ask what caused it – there’s a small bump on the penis. How can you possibly figure out the reason? I’m a female doctor; if you dare to take off your pants, I’ll be willing to cut off that little bump and make you bleed.:P {:3_51:}
The liquid level has changed; has the control range changed as well? Otherwise, the control signal should remain at 1400
Is there a flowchart? chenxu07789@163.com is my email address
It is likely that as the liquid level rises, the opening degree of the control valve also increases, resulting in insufficient back pressure; this is caused by air in the medium. It is recommended to reduce the valve opening degree appropriately.