When selecting a peristaltic pump, it's essential to consider several key factors to ensure optimal performance and longevity. First, when choosing the hose, you should take into account the flow rate—refer to the hose flow curve for accurate matching. Chemical resistance is also crucial; select the appropriate hose material based on the fluid being pumped. Temperature is another important factor, as different materials perform differently under varying thermal conditions. For suction applications, it's recommended to use high-performance hoses that can handle the stress of suction more effectively. Additionally, the lifespan of the hose depends on its condition and the operating environment, so regular inspection and maintenance are necessary.
When selecting the pump head, you should evaluate the required flow rate and choose a pump head that matches the reference flow specifications. Consider how often the hose will need to be changed—most Lange pump heads, except the BZ series, are designed for quick hose replacement. The number of channels required is also important; if multiple channels are needed, opt for a multi-channel pump head or one that can be connected in series. Chemical resistance should also be considered, especially if the fluid may overflow onto the pump head, which could affect the material’s durability.
When selecting the drive system, the flow rate is a primary consideration. Higher flow rates typically require higher drive speeds. Choose the appropriate drive based on the flow control requirements—whether fixed or adjustable speed, with options for flow correction, precise flow control, distribution, or external control. It's also important to consider the protection level of the drive unit based on the operating environment. Factors such as sealing, dust resistance, and water exposure should be taken into account to ensure the drive operates reliably over time.
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