How to adjust the load of a pump without a flow meter
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There are many pumps with low-load operations at the site; flow meters are not installed on their control columns, but they are available in the cabinet room. When the outlet valve is opened fully at the site, how can one determine what the load is and whether the current level will exceed the limit? Personally, I think it’s possible to determine the opening degree of the on-site outlet valve under full load by testing in the cabinet room; future values should not exceed this degree. Do anyone else have any simpler methods?
Is the poster saying there is no ammeter?
Yeah, many pump control columns don’t have ammeters
If there is no ammeter, check the outlet pressure gauge and adjust the flow rate according to the design pressure! ~
Isn’t there a power distribution room in the electrician’s workshop next to the control room? There are parameters regarding the current and voltage of pumps of all sizes available there; you can ask them
Generally, on-site adjustments are made based on the outlet pressure of the pump; the pressure of centrifugal pumps should not be too low.
Adjust the pump load based on the on-site outlet pressure gauge and ammeter.