蠕动泵的种类看似种类繁多，实际应用中并没有我们想象的那么复杂，要选择一款适合的蠕动泵也不是难事。 Peristaltic pump seems phyletic and various, the kinds of practice is not as complicated as we thought, to choose a suitable peristaltic pump would not be difficult. 首先确定防护等级，有些特殊的场合要求，防爆，防水，防尘等，这时候首先要考虑的是蠕动泵本身有没有达到要求的防护等级，防爆蠕动泵中，气动驱动的蠕动泵是防爆等级最高的，其次是防爆电机驱动，防爆电机也是有防爆等级的，应根据自己的实际情况选择。IP防护等级也要根据自己的实际情况选择，蠕动泵一般的防护等级为IP31。 First determine the degree of protection, and some special occasions, explosion-proof, waterproof, dustproof and so on, then the first thing to consider is the peristaltic pump itself have reached the requirements of the protection grade, explosion-proof peristaltic pump, pneumatic driven peristaltic pump is the highest explosion-proof grade, the second is the explosion-proof motor driver, also have explosive-proof grade explosion-proof motor, should choose according to their own actual situation. IP protection grade also want to choose according to their own actual situation, general protection grade of peristaltic pump is IP31. 其次确定流量范围，由此确定泵头的型号，以及驱动器的转速。在确定流量范围的时候还要考虑到传输的液体有没有粘度和腐蚀性，蠕动泵传输有粘度的流体流量会有一定的衰减，所以在有粘度的情况下要尽量放宽流量的范围，以免达不到流量要求。如果流体具有腐蚀性，就要考虑使用耐腐蚀的泵管。 Second flow range is determined, which determine the type of pump head, and the speed of the drive. In determining the flow range even when considering the transmission of liquid viscosity and corrosive, peristaltic pump has a viscosity fluid flow will have certain attenuation, so in a case with viscosity try to ease traffic in the area, so as to avoid can not meet the traffic demand. If the fluid is corrosive, consider the use of corrosion resistant pump pipe. 最后确定驱动器的种类，确定驱动器种类有两点需要考虑的因素： Determine the final drive, the kinds of drive types there are two factors to consider: 第一，精度要求，在蠕动泵常用的电机中，步进电机，直流电机，交流电机，其中步进电机的精度最高，成本也最高。如果对精度没有要求，可以考虑使用直流电机，节约成本。但是如果对精度有要求，建议使用步进电机。但是并不是所有的步进电机控制精度就一定高，主要看厂家的控制方式了，具体请参看我司文档“如何提高蠕动泵的灌装精度”，纳通蠕动泵采用脉动和角度相结合的控制方式，重复精度可以达到±0.3%。尤其在小流量传输中优势比较明显。