Product Description
Its core function is high-precision quantitative fluid transfer and flow control. It can accurately set and adjust the delivery flow through a digital control system (such as a touchscreen, buttons, or remote signals), with a metering accuracy typically within 1%. It can stably transfer various media including acids, alkalis, chemicals, and additives, ensuring the accuracy of fluid dosage in industrial processes.
It realizes fluid transfer by relying on the "periodic change of pump chamber volume," making it a type of Positive Displacement Pump: Components such as plungers and diaphragms inside the pump regularly compress or expand the pump chamber to suck in fluid and forcefully push it to the outlet. The flow rate only depends on the pump chamber volume and operating frequency, and is not affected by pipeline pressure fluctuations. In contrast, Centrifugal Pumps transfer fluid using centrifugal force generated by impeller rotationthese two working principles are completely different, so Digital Metering Pumps do not belong to Centrifugal Pumps.
Compared with traditional mechanically adjusted metering pumps, the digital design offers significant advantages: First, easy operationthe flow rate can be directly set via a digital panel (e.g., 0-100% range adjustment), and some models support touchscreen operation and parameter storage. Second, precise controlit can receive remote signals such as 4-20mA and RS485 to achieve automated closed-loop control (e.g., linking with online detectors to adjust chemical dosage in real time based on water quality). Third, data traceabilitysome high-end models can record operating parameters (e.g., cumulative flow, working hours), facilitating the monitoring and management of industrial processes.
As a typical Industrial Pump, it is mainly used in scenarios requiring high "dosage accuracy," such as: the water treatment industry (accurate dosing of flocculants and disinfectants into sewage), chemical production (controlling the addition of raw materials in reaction kettles), pharmaceutical industry (transferring liquid medicines or excipients to ensure accurate proportion of pharmaceutical ingredients), food and beverage industry (adding food additives such as preservatives and pigments), and power industry (dosing scale inhibitors into boiler water).
Three core parameters should be considered based on actual working conditions: First, flow range (must match the actual delivery volume, e.g., 0.1-50 L/h). Second, pressure rating (must meet the pressure requirements of the pipeline system to avoid overload). Third, media compatibility (select pump head materials such as PP, PVDF, and 316 stainless steel based on the corrosiveness and viscosity of the transferred medium). Additionally, it is necessary to consider whether additional functions such as remote control and explosion-proof capability (for flammable and explosive scenarios) are required.
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