How to adjust the boiler water level gauge (double-chamber balancing vessel)?
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How to adjust the boiler water level gauge (double-chamber balancing vessel with differential pressure transmitter)? What are the procedures for opening valves and draining sewage and what need to be paid attention to?
This problem is more troublesome. When calibrating the transmitter, there is no pressure in the steam drum, and water is injected into the negative pressure chamber. The water cannot be filled completely because the density of water at room temperature is significantly different from the density of water under normal pressure in the steam drum. Therefore, when filling water, the height of the on-site water level gauge should be compared, and the static pressure should be matched with the range of the transmitter. Normally, every time the sewage is discharged, the transmitter must run to the maximum, and the negative pressure chamber must be filled with condensate water before it can work normally.