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Learn more about how Coriolis-based flow meters can be used as microfluidic flow meter instead of thermal flow meters. Read the customer story of a microfluidics system builder who used Bronkhorst products.
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A metering pump can be used to move a volume of liquid in a specific period of time. Users often believe this provides them an accurate pumped volume. However, there are some disadvantages of using only metering pumps without a flow meter. In this blog, I will share the details with you.
Deviations of 10-15% are considered normal. In specific cases a metering pump can deviate even more than 50%. Inaccuracies like this are caused by the many changing process conditions, such as:
Using this solution will mitigate the issues in the original solution, however it introduces other disadvantages:
With this solution you do not need to include the metering pump in the control system, just give a set point demand to the mass flow meter and it will drive the pump to achieve the desired dose or flow. This solution will give you several advantages, such as:
Pump control can offer accurate dosing solutions for house hold chemicals like detergents and cleaning products. Learn more about a flow meter & pump combination.
In all applications where the performance of a metering pump is critical, I advise you to add an additional flow meter. Especially in processes where a liquid is dispensed into a container or bottle or into the main stream of a process. It offers many benefits: accuracy, repeatability, traceability, documented certainty, less waste, advanced data analysis, no recalibration and savings on pump costs.
Adding a flow meter to a metering pump can be relevant in a chemical lab setup, in a food pilot plant or even in a random skid.
Commonly, quality control tests on liquids are carried out randomly on a small percentage of the dosings to ensure general compliance. If you use a flow meter to control the dosage of your liquid, you can achieve up to 100% quality control checking of your product with reduced human impact.
Additives or performance chemicals are usually precious and have a huge impact on the result of the process. The significant improvement of this process, will then lead to a high-performance result and less waste. This is of a huge advantage in many applications, time-wise and cost-wise.
Are you interested to learn more about how flow meters can help you optimise your pump performance? Check out our webinar video.
Top 10 FAQs about additives of liquid dosing, dosing of flavourings and fragrances with a flow meter and dosing pump. Read the FAQs about dosing!
Bronkhorst High-Tech designs and manufactures innovative instruments and subsystems for low-flow measurement and control for use in laboratories, machinery and industry. Driven by a strong sense of sustainability and with many years of experience, we offer an extensive range of (mass) flow meters and controllers for gases and liquids, based on thermal, Coriolis and ultrasonic measuring principles. Our global sales and service network provides local support in more than 40 countries. Discover Bronkhorst®!