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Metering pump selection and use of precautions

According to the GB/T7782-2008 "Metering Pump" standard, "the flow metering accuracy of the pump under rated conditions and the maximum relative stroke length shall not be less than 1% of the soil". The ideal travel range of the pump when conveying general media, the piston metering pump and the hydraulic diaphragm pump are 30%~100%; The mechanical diaphragm metering pump is 40%~100%. When the range required by the process is ≤ 10%, the AC inverter can be added to reduce the speed and expand the range of use. The flow curve on the certificate is measured by the factory according to the normal temperature clear water performance test when leaving the factory, and the user should retest according to the actual working conditions and recalibrate the relationship curve between the stroke and the flow rate, so as to accurately adjust the flow rate during operation.

Metering pump selection and use of precautions
Metering pump selection and use of precautions
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