Karmelle’s automatic filling range includes both volumetric and flowmeter machines – but what’s the difference between these two filling methods? Volumetric vs flowmeter, which would be better for your product? We asked Design Engineer Andy to provide a brief overview.
Volumetric filling is a method of dispensing a given volume of product very accurately. It relies on a positive displacement piston pump.
A set volume of liquid is trapped, and moved through the system repeatedly. This cyclical pumping action is driven by a piston.
A piston pump can handle a wide range of liquids, from water through to quite thick products, like creams and pastes.
A volumetric filling machine does not rely on external pumps or gravity to produce a flow. It offers consistency, dispensing the same amount of liquid into every container, regardless of interior volumes.
- High levels of accuracy (+/-0.2%)
- Suitable for a variety of products, including viscous liquids.
Flowmeter filling machines rely on an electronic sensor, which measures flow and cuts it off, via a system of valves, after a pre-programmed quantity of fluid has been dispensed. The flow can be produced by a continuous pump, typically centrifugal. However, other types of pump can be used, depending on the product and its viscosity.
Flowmeter Fillers can also be operated from a gravity-fed system, whereby product is supplied under the force of gravity from an elevated storage tank. Either flowmeter method has its pros & cons, and a system is usually designed with the viscosity of the product in mind.
Generally speaking, flowmeter filling systems can be both fast and accurate. With fewer mechanical parts and no piston, they are quicker and easier to clean – ideal if you will be washing-down regularly between product runs.
- Shorter wash-down and product changeover times.
- Ideal for hygienic filling applications.
Wondering which fill method would be suitable for your product? Contact our team on +44(0)1484 533356 to discuss the options.