Wineries
Continuous monitoring of carbon dioxide and oxygen in wineries protects workers from fermentation off-gassing in tanks, barrel rooms, and cellars where CO₂ accumulates and displaces breathable air.
Typical Wineries System
Target Gases
Gases monitored in this application
Why Gas Detection is Required
High levels of carbon dioxide (CO₂) in wineries can accumulate in pits, sumps, storage tanks and bottling rooms, but in particular, fermentation rooms. Fermentation produces massive CO₂ volumes. CO₂ displaces oxygen, creating an asphyxiation risk in low lying and enclosed areas, posing a safety hazard to employees. CO₂ is odourless, colourless and is twice as heavy as air. It will sink to the bottom of a room or a tank, forming potentially hazardous pools of gas that as it builds up, moves the oxygen out of the area. Winery gas detection should include CO₂ detectors where carbon dioxide could accumulate and oxygen detectors in the breathing zone and near the fermentation tanks. In addition, the levels of oxygen and carbon dioxide should be checked prior to cleaning the fermenters by lowering a personal, portable O₂ and CO₂ monitor into the vessel to determine if it is safe to enter. If Ozone is used to disinfect the bottles and equipment, an ozone gas detector should be installed in the area, mounted near the floor.
System Architecture
A complete winery gas detection system typically consists of CO₂ sensors positioned in fermentation and barrel storage areas, connected to a controller that manages ventilation and provides alarming at entry points. The controller monitors gas levels continuously and activates ventilation when fermentation activity elevates CO₂ above safe levels. Oxygen sensors provide backup protection in enclosed cave storage and other confined spaces where CO₂ displacement is possible. For smaller boutique wineries, self-contained detector-controller units provide economical protection for fermentation rooms and cave storage areas. Larger production wineries benefit from networked architectures with sensors throughout fermentation, barrel, and bottling areas, enabling coordinated ventilation response and centralized monitoring from the winemaker office. Alarm outputs activate audible/visual notification devices at zone entrances, trigger exhaust ventilation, and can interface with tank monitoring systems for coordinated fermentation tracking.
Key Considerations
Important factors for planning your system
Life safety system with CO2 gas detector mounted near fermentation tanks, distillers, casks and equipment such as transfer pumps, pipes and flexible hoses
CO2 or ozone can be used as a disinfectant in the bottling area, an O3 detector should be mounted near the floor
Use a portable gas monitor to check O2 and CO2 levels in fermentation tanks prior to entering to clean them
Additional Information
To ensure life safety requirements are met, a fixed gas detection system in a winery should also include portable gas monitors. Be sure to follow local confined entry requirements and regulations as well.
