如何选择 Masterflex 泵系统

定义应用需求。

• 需要多大的流速？
• 输送什么化学品？
• 流体粘度或背压等条件在应用中是否至关重要？

根据流速选择泵系列。

• Masterflex Ismatec^®0.002 至 37 mL/min
• Masterflex L/S^®0.0006 至 3400 mL/min
• Masterflex I/P^®0.012 至 13 LPM
• Masterflex B/T^®0.3 至 45 LPM

选择适合您的应用的组件。

• I/P 和 L/S 泵系统分为三类：泵头、泵管和驱动器。
• Masterflex Ismatec 和 B/T 泵系统分为两类：泵头和驱动器。
• 请选择同系列的泵头、泵管和驱动器以完善您的管式泵系统。

选择泵头时要考虑什么

• 流速— 不同泵头的流速能力不同。
• 泵管更换频率— 有些泵头要求频繁更换泵管。
• 所需的通道数量— 大多数情况下，泵头可叠加。
• 化学相容性— 在应对化学品溢出时，泵头材料显得至关重要。请参阅化学相容性表。
• 准确性— 标准泵头确保精确、可重现的流速。

选择泵管时要考虑什么

• 您可以查阅我们的 STAMP 泵管选型指南或快速概览：
• 尺寸— 泵管的内径和外径决定了流速范围、最大压力和粘性流体处理能力。
• 温度— 流体或环境温度较高会导致泵管寿命缩短。有时，可采用多层管来缓解这些风险。
• 应用— 对于您的工业应用而言需要纳入考虑的特殊因素，例如遵守联邦或其他法规（如 FDA 21 cfr 177.2600 和 USP Class VI）、软或硬颗粒物或高粘度。
• 介质— 哪种配方受流体化学性质影响最小？可查看化学相容性指南数据库找到答案。
• 压力— 压力较高会导致泵管寿命缩短，并会增加泵管破裂风险。可采用管壁更厚的泵管，并结合兼容该压力范围的泵头结构来缓解。此外，在泵管连接器上安装泵管或倒钩锁，有助于降低其破裂风险。

选择驱动器时要考虑什么

• 流速— 驱动器的转速与流速直接相关。
• 定速或变速— 变速驱动器可以调节流速。
• 流速或注液体积的准确性— 许多驱动器配备了数字速度控制电路，以实现高度准确和可重现性流速。
• 通过模拟信号或云进行远程控制 — 有些驱动器支持连接到过程控制器或可通过脚踏开关操作，而其他驱动器则可通过电话或网页实现安全云监控。
• 环境危害防护—— 许多驱动器经密封处理，以防止灰尘和水进入。

Masterflex 蠕动泵系列——按流量范围选购

Masterflex^® peristaltic pump systems provide superior accuracy and repeatability to ensure optimal performance when used with the proper tubing. These pumps offer the latest technology, including MasterSense^™ integrated sensor monitoring to ensure media quality, MasterflexLive^® cloud-enabled connectivity, intuitive digital touch screen capability and the low maintenance and cost-effectiveness of peristaltic pumps. Our extensive portfolio has what you need to scale from lab to production.

Understanding the Masterflex Pump Families

Masterflex offers four different pump families differentiated by flow rate:

With each pump option within the Masterflex portfolio, there are typically three primary components that make up a pump system– the pump drive, the pump head and the pump tubing. Depending upon the pump family you choose, the pump drive and the pump head may be assembled in advance or may need to be ordered separately. For more details, visit Select the Components that Fit Your Requirements.

5 Key Questions to Help Select the Right Pump System

To help you select the right components needed for your optimal pump system, answer the five key questions below to better understand the parameters for the Masterflex pump system you need:

What is your application? – Key requirements that may shape your final component selection include the type of environment the pumping will take place, or certain regulatory requirements that are needed for your workflow.

• What media are you pumping? – What are the specific reagents that you will be pumping with your Masterflex pump system? What are the chemical properties (organic/inorganic, pH, etc) of those reagents? What are the physical properties (viscosity, particulate matter presence, etc) that could impact the components you choose?
   
• What flow rate are you pumping? – This could be a static flow rate, or it could be a range of flow rates. Either way, the flow rate is directly impacted by each of the primary components (the pump drive, the pump head and the pump tubing) of your Masterflex pump system and must be considered when selecting those components.
   
• What pressure and temperature will you be operating? – Regarding pressure, understanding both the maximum operating pressure as well as those factors that can influence pressure over time (e.g., inline filtration) are important. Additionally, understanding how much 'lift' will be needed in your fluid pathway on the inlet side of the pump is also critical. For temperature, knowing the upper and lower limits of the temperature range at which you intend to operate will provide a foundation for the tubing options you can consider.
   
• What type of instrument control do you need? – Whether you will be controlling your Masterflex pump system locally, analog input, remote control / advanced networking, etc – understanding what type of control you need to leverage will help qualify the key features in the drive that you choose as part of your Masterflex pump system.

Selecting the Right Components For Your Pump System

Once you have answered the five key questions listed above, you are ready to begin selecting components for your Masterflex pump system. As mentioned previously, a complete pump system from Masterflex is comprised of three primary components – the pump drive, the pump head and the pump tubing. For the Ismatec^® and B/T^® families, the pump drive and the pump head are usually ordered together as a single SKU; however, for the L/S^® and I/P^® families, the pump drive and the pump head are usually ordered separately.

What to consider when choosing a Masterflex drive

• Flow rate – Each of the Masterflex families is defined by the flow rate range supported by the compatible drives. Therefore, you will want to choose a drive that can deliver the flow rate(s) you need for your application.
   
• Fixed  or variable speed – Fixed speed Masterflex drives are typically less expensive but cannot support 'on demand' flow rate adjustment; variable-speed drives, however, can adjust the speed – and the flow rate – as needed but are typically more expensive.
   
• Accuracy of flow rate or dispensed volume – Some drives only offer manually adjusted potentiometer-based modifications to the flow rate, where many offer digital speed control circuitry for those applications that demand highly accurate and more repeatable flow rates.
   
• Type of control needed – Some Masterflex drives are more basic in operation and thus only support local, bench top control, whereas other drives can support analog control and even remote control using advanced communication protocols, such as Profibus^®, EtherNet/IPTM, etc.
   
• Sterilisation and protection against hazards – Many Masterflex drives offer stainless steel casings and are sealed against dust and water exposure to support wash-down requirements; others, however, are available in different casing options to save on cost.

What to consider when choosing a Masterflex pump head

• Flow rate – Different Masterflex pump heads have different flow rate capacities, depending upon their size and the number of rollers they utilise. It’s important to review the technical specifications of each head to ensure the one you have chosen can support the flow rate(s) needed for your application.
   
• Frequency of tubing changes – Some Masterflex pump heads are designed for a specific tubing size; that typically do not support rapid tubing change over. Other pump heads are support multiple sizes of Masterflex tubing and incorporate the rapid tubing change over functionality.
   
• Desired number of channels – Knowing how many channels you need to operate – either for increased productivity or for reduction of pulsation – can help inform the Masterflex pump head options you consider.
   
• Chemical compatibility – Usually, the chemicals being pumped never touch the pump head, but in the event of a chemical spill, the materials used to construct the Masterflex pump heads become a key factor in the selection process.
   
• Accuracy needed – For the most accurate and repeatable flow rates, choose our standard pump heads that accept only a single size.

What to consider when choosing Masterflex pump tubing

There are many factors to consider when choosing the right pump tubing. For an indepth guide to help you choose, visit our STAMP tubing selection guide . Below is an overview of the selection guide:

• Size – Inner diameter and wall thickness determine key outputs such as flow range, maximum pressure, and ability to handle viscous fluid well. For most applications, our Precision Pump Tubing is an excellent choice. For applications where higher viscosity fluids are present or where higher pressures characterise the fluid pathway, utilising our High Performance Pump Tubing is the best option. (NOTE: If High Performance Pump Tubing is used, a Masterflex pump drive and pump head that are compatible with that tubing must be chosen.)
   
• Temperature – Understanding both the fluid temperatures and the environmental temperatures – and comparing those to the ratings assigned to the available tubing materials – can help inform your Masterflex pump tubing selection.
   
• Application – Some applications have specific industry requirements, such as adherence to federal or other regulations, including FDA 21 CFR 177.2600 and USP Class VI, so reviewing the regulatory approvals of the available Masterflex tubing materials is a must. Understanding the viscosity and particulate presence in the fluid can also help inform your Masterflex pump tubing selection.
   
• Media – Being familiar with the chemical nature of your reagent(s) and comparing that with the chemical compatibility of the available Masterflex tubing materials is an important consideration. Our Chemical Compatibility Database can help you with the right selection.
   
• Pressure – Higher pressure often demands the use of thicker-walled Masterflex High Performance pump tubing as well as special connection options that can support those pressures.

Other Accessories to Consider

In addition to the core three components that comprise a Masterflex pump system, there are numerous other items to consider.. Connectors, transfer tubing and other accessories (e.g., flow rate sensors, pressure sensors, leak detection sensors, pulse dampeners, etc) are all important accessories that can enhance your overall fluid pathway in meaningful ways by ensuring the safety of the equipment operators while also ensuring minimised downtime and maximised uptime for your equipment and your process. For questions related to these available accessories, please contact your local Avantor Fluid Handling specialist or our Application Support team who are available to help.