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    “Metering pump is peristaltic pump” this statement is not accurate, metering pump and peristaltic pump belong to two different concepts, peristaltic pump can be used as a metering pump, but the metering pump is not only a type of peristaltic pump. The following is a detailed explanation of the two pumps:

    Metering pump
    Metering pump is a kind of pump that can measure and transport liquid, also called quantitative pump, proportional pump, usually described as: metering pump is a kind of pump that can meet the needs of various strict processes, and the flow can be stepless adjustment in the range of 0 to 100%, which is used to transport liquid (especially corrosive liquid). Dosing pumps are often used for the addition of various types of agents, so they are also called dosing pumps. The metering pump can stably transport fluid, and the flow can be adjusted and controlled by speed and proportion adjustment. According to the definition of metering pump, any pump that can meet the function of metering and quantification can be called metering pump.

    Peristaltic pump
    Peristaltic pump, also known as gear pump or hose pump, is a pump that transmits medium by rotating gear so that the hose is constantly compressed and relaxed. It has the advantages of accurate flow, flexible selection and easy use, and is widely used in chemical, pharmaceutical, food and other industries. Peristaltic pump has accurate flow control ability, so it is often used in the occasions of measurement by flow meters, such as medicine, environmental protection, chemical, food, beverage and other industries.

    Peristaltic pump features include:

    The conveying medium is not in contact with the pump body: it is conducive to conveying some media that are highly corrosive to metals, such as various acids, alkali solutions, or some salt solutions containing chloride ions.
    Simple and quick cleaning and disassembly: the medium only flows in the hose, and the cleaning is only for the hose. The installation and disassembly of the peristaltic pump hose are relatively simple, as long as the motor is activated, the installation and disassembly can be completed.
    Speed and flow can be controlled: After the motor used for peristaltic pump is decelerated by the reducer, the speed is not high, and the maximum speed is generally not more than 165 RPM. In addition, manual speed regulation and frequency conversion speed regulation can be used in the selection of the motor, so as to better control the flow rate.
    Unique conveying advantages: Because the press roller works from the tangential extrusion of the hose, and has a low speed, it has a unique advantage in conveying some more sensitive and easily damaged media.
    The advantages of peristaltic pump as a metering pump are:

    Flow stability: The peristaltic pump uses the compression hose to transport liquid, and the compression part changes little, so the flow stability is high.
    High measurement accuracy: Due to the wide range of peristaltic pump flow adjustment, the flow can be fine-tuned according to needs, so as to achieve high measurement accuracy. The conveying accuracy of peristaltic pump can reach ±0.2~1%.
    Corrosion resistance: Some peristaltic pumps are made of high-quality materials, strong corrosion resistance, and can be used in more complex media.
    Simple maintenance: peristaltic pump is easy to operate, low maintenance costs, because of its simple structure, easy to clean and disassemble, but also easy to install and replace.
    In addition, the inner cavity of the peristaltic pump is the elastic hose of the pump head itself, which can be replaced at any time, which also determines that the peristaltic pump has a longer service life.

    In summary, although the peristaltic pump can be used as a metering pump, the metering pump is not only a type of peristaltic pump. When choosing the type of pump, it is necessary to comprehensively consider according to the actual application scenarios and requirements.