CO2 Mixing and Carbonation System
An inline carbonation system that hits target volumes of CO2 within ±0.05 vol, so the filler never has to over-carbonate to compensate.
Key Specifications
| Capacity | 2,000 - 40,000 L per hour |
|---|---|
| Accuracy | ± 0.05 volumes CO2 |
| Measurement | Inline CO2 meter, continuous |
| Mixing | Static mixer or venturi, depending on line rate |
| Control | Automatic dosing valve with PID loop |
| Product temperature | 0 - 6 degrees C |
| CIP | Fully drainable, integrated with line CIP |
Why over-carbonating costs money twice
Breweries often carbonate slightly high because the filler loses CO2 to foaming. That extra gas is bought twice: once as CO2 and once as lost yield at the filler. Holding ±0.05 vol removes the need for the buffer.
Inline measurement closes the loop
A continuous CO2 meter downstream of the dosing point feeds a PID controller. Without measurement, dosing is open-loop and drifts with product temperature and flow changes across a run.
Static mixer versus venturi
A static mixer gives better dissolution at lower line rates and lower pressure drop. A venturi injects more aggressively and suits high rates where the mixer would be very long. The choice follows line rate and available pump head.
Typical Applications
- Breweries carbonating in-line before the filler — Inline carbonation removes a bright tank step and lets the filler receive beer already at target.
- Lines with variable throughput — PID control holds accuracy when the line slows for a downstream stop, which is where open-loop systems drift.
- Breweries carbonating soft drinks and water — The same unit handles carbonated water and soft drinks with a recipe change.
Related Equipment
Frequently Asked Questions
Can it carbonate to 4 volumes?
Yes, provided product temperature is held near 0-2 degrees C. Above 3.5 vol, a longer saturation line is recommended.
Does it work with high-gravity dilution?
Yes. Deaerated water blending and CO2 dosing are usually combined in one skid for high-gravity brewing.
How often does the CO2 meter need calibration?
Every six months, against a reference method. Drift beyond 0.03 vol between calibrations is a sign the sensor needs service.
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