turndown ratio metering pump
turndown ratio metering pump
(OP)
Hi experts,
Sorry for a rookie question.
Turndown ratio specified in the data sheet of 0.6. Pump manufacturer has specified 10:1. Is this acceptable? My understanding is that turndown ratio is pump manufacturer's capability, as long as the rated capacity of the pump is 110% more than maximum capacity. In this case, no minimum and max operating conditions specified in the datasheet only rated conditions. I think this is acceptable because the rated condition would be within the the guaranteed flow of manufacturer, ie between 10-100% setting. Thanks
Sorry for a rookie question.
Turndown ratio specified in the data sheet of 0.6. Pump manufacturer has specified 10:1. Is this acceptable? My understanding is that turndown ratio is pump manufacturer's capability, as long as the rated capacity of the pump is 110% more than maximum capacity. In this case, no minimum and max operating conditions specified in the datasheet only rated conditions. I think this is acceptable because the rated condition would be within the the guaranteed flow of manufacturer, ie between 10-100% setting. Thanks





RE: turndown ratio metering pump
A turndown ratio of 10:1 for a metering pump is pretty common, it means the pump will cover a range from 1 unit/time to 10 units/time. As long as your requirements fall within the pump's minimum and maximum capacity limits it will do what you want it to do (assuming it will also develop the pressure you need, handle the viscosity, meet NPSHA, etc).
RE: turndown ratio metering pump
RE: turndown ratio metering pump
The turndown ratio of 0.6 probably refers to a turndown of 60% of maximum capacity. Check with the specifier.
RE: turndown ratio metering pump
Johnny Pellin