Using The Pump Supplier as a Technical Resource

摘要

There are a number of parameters that need to be considered when selecting the right peristaltic pump for application-specific processes. Factors such as duty cycle, flow rate, intermittent and/or constant pressures, tubing, product media, temperature limitations, cleaning [CIP or SIP], the impact of possible contamination and maintenance needs are all aspects that require consideration. Fortunately we here at PCT have the expertise and the passion to help. Duty cycles are important when selecting a peristaltic pump. If the process requires fluid transfer for extended time periods then the flow rate per minute or per hour must be taken into account. This flowrate is governed by the revolutions per minute of the rollers acting upon the tubing. By combining the rpm and the inner diameter (ID) of the tube it is possible to calculate the volume being displaced. Knowing the variation in the rpm setting and capability for various tube sizes will dictate the maximum and minimum flow rate capability for any given pump. It is, however, preferable to minimise the rpm wherever possible as friction affects do degrade the tubing over time and the higher the speed the faster the tubing needs replacing. Furthermore, factors like the viscosity of the liquid, the temperature and the pressure will affect overall performance and tube life.