Precision and Accuracy With KNF Diaphragm Metering Pump Technology
KNF’s diaphragm metering pump solutions combine proven diaphragm pump technology with innovative features to deliver accurate and precise metering. Both the classic and intelligent pump series provide a stable, linear flow with minimal pulsation, ensuring process reliability. Designed for versatility, they cover wide flow rate ranges and operate reliably with back pressure. Equipped with advanced motor technology engineered for various pump requirements, they deliver outstanding durability and performance.
Understanding Metering and the Benefits of a Consistent Flow
Metering describes the continuous, accurate, and precise media transfer at a set flow rate. Unlike dosing pumps, which dispense a specific amount of liquid, metering pumps maintain a consistent, continuous flow. A precise, accurate, and stable flow offers various benefits including:
- Stable and predictable system performance
- Steady operating conditions and process stability
- Prevention of over- or undersupply through accurate media ratios
- Cost efficiency by reducing waste and energy consumption
- System safety and enhanced system lifetime
- Compliance with regulatory standards
How Diaphragm Pump Technology Enables Reliable Flow Rates
Diaphragm pump technology is the ideal solution for metering applications as it provides reliable flow rate control. Diaphragm pumps use an eccentric drive to move the diaphragm up and down. On the downward stroke the media is drawn in, and on the outward stroke it is pushed out. This enables diaphragm pumps to provide two key factors for controlling the flow rate: a fixed volume displaced per stroke and the number of strokes over time. The volume per stroke determines how much liquid is moved in each cycle, while the stroke frequency dictates how often this volume is transferred. The stroke volume is fixed during pump operation and can only be adjusted during the selection and construction process of the liquid metering pump. Increasing either the stroke volume or the stroke frequency raises the flow rate, enabling precise and continuous metering.
Metering Diaphragm Pumps: Versatile Solutions for Diverse Industries
Diaphragm metering pump solutions are indispensable in industries where precision and reliability are critical. They are used in inkjet printing systems to supply ink to the print heads or medical applications for the delivery of detergents, cleaning or rinsing fluids, and sterilizing agents. Food and beverage production lines use a liquid metering pump to add exact ratios of liquids such as flavorings. In pharmaceutical and biotechnology processes they are responsible for ingredient blending and sterile media transfer. Water and wastewater treatment also uses this technology for pH control, chlorine injection, or flocculant dosing.
Modular Design for Superior Metering Performance
Depending on specific application requirements, KNF customers can choose between classic and intelligent diaphragm metering pump solutions. All models are highly reliable and versatile and can be individually adapted to meet unique needs. KNF experts leverage a sophisticated modular system that offers extensive customizing options for mechanics, motor types, and hydraulics, as well as a wide range of material choices for pump heads, diaphragms, and valves. This flexibility ensures that each OEM liquid metering pump is perfectly tailored to deliver optimal performance and durability in its intended application. For lab applications, KNF’s diaphragm pump portfolio also includes liquid dosing pumps that can be used for metering. To find the right solution, KNF experts support customers throughout the selection and engineering process.
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KNF Metering Diaphragm Pumps: Advanced Solutions for Diverse Needs
KNF’s classic and intelligent diaphragm metering pump solutions are based on Smooth Flow technology. This prevents pressure peaks and offers a stable and linear flow with minimal pulsation for uncompromising precision. The FM 50 liquid metering pump combines maximum performance with minimum size and offers adjustable performance. The FMS-FC 1.400 intelligent pump is equipped with an ultrasonic sensor and integrated software that takes metering diaphragm pumps to the next level.
Key Advantages of Diaphragm Metering Pump Technology
Diaphragm pumps provide valuable benefits for metering applications. They ensure a leak-tight and contamination-free media transfer. Thanks to a wide range of materials, liquid metering diaphragm pumps are corrosion- and chemical-resistant, enabling the safe transfer of even aggressive, abrasive, or corrosive media. As they are based on KNF’s innovative Smooth Flow technology, they gently handle fluids with minimal pulsation. Their dry-run safety ensures process reliability because it prevents damage during start-up or interruptions. This is also supported by their self-priming capability that allows for easy startup of an empty pump. These benefits combined maintain precise flow rate even under challenging conditions and ensure low maintenance requirements as well as a long lifetime of the diaphragm metering pump and overall system.
Precision Through Advanced Diaphragm Design
KNF diaphragm metering pump solutions deliver exceptional precision and highly accurate and linear flow rates even under pressure fluctuations. This is achieved through a specially engineered diaphragm that is three times stiffer than a regular diaphragm, giving it piston-like characteristics for consistent volume per stroke. Additional features such as a diaphragm support and an insert ring further stabilize performance, minimizing deformation and ensuring reliable metering. By combining these innovations with decades of KNF expertise in diaphragm design, metering diaphragm pumps like the FM 50 retain all the advantages of diaphragm pump technology while offering precision close to that of piston pumps.
Advanced Flow Control Through KNF Motor Technology
Metering diaphragm pumps such as the FM 50 from KNF are equipped with innovative pump drive technology. Developed and manufactured in-house, these brushless DC motors offer exceptional speed control and long service life. This enables highly accurate adjustment of stroke frequency, allowing the pump to maintain a stable and linear flow rate even under varying conditions. Its brushless design minimizes wear and reduces maintenance. In addition, the motor is fully integrated into the pump housing, resulting in maximum compactness and enabling high IP protection classes when required.
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