Why is the interlock setting for low liquid levels set so high?
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Why are the interlocks for low liquid levels in several of the absorption pump chambers all above 20, while the low liquid level in the flue gas desulfurization tower is over 30? Experts, what is the reasoning behind setting such high values for the low liquid level? Generally, it’s 10 for low low and 90 for high high. ( 0 x 0 )
Based on the normal operating flow rate and the volume of liquid stored in the tank, the time required to empty it can be determined, allowing sufficient time for processing and to set up alarms
If it’s too low, it constitutes discrimination; the pressure of the pump is unstable, mainly due to the time required for fluid discharge
Meet the requirements for the net positive suction head of the centrifugal pump
Some have a high circulation flow rate and small tanks. Reaction time needs to be allowed to prevent cavitation
It should be able to avoid cavitation for a certain period of time