Witt KM-Flow gas mixer with digital MFCs

Witt’s KM-Flow is a gas mixer with digital mass flow controllers (MFC) for packaging using a protective atmosphere in the food industry.

The KM-Flow mixes two or three gases for all types of packaging machines, whether vacuum, thermoforming, pillow bags or manually sealed compartments. The digital MFCs assume the function of the proportional valves and pressure regulators in standard mixing systems. The gas mixer is certified according to ISO 22000 for food safety.

The operation is performed by touch screen instead of the control dial commonly used in other models. Programmable gas mixtures can be selected by button or by barcode reader. The company claims the digital data bus makes evaluation of the measuring data easier.

The MFC technology is technically precise and reliable when metering and retaining the selected mixing ratio.

MFC devices are suitable for users wanting a fully automatic inert gas packaging process with permanent monitoring and fault correction. Used in combination with an analysis instrument that continually measures the gas concentration in the package during the packaging process, the gas mixer can adjust the gas ratio and gas mixture volume. This can minimise gas consumption and uncontrolled escape of CO₂.