A beverage cellar stores CO2 in cylinders or a bulk tank in a small room below ground. A leak sinks and fills the room from the floor up, without a smell. A detector low on the wall sounds an alarm at the door before anyone walks in, and reports the reading over cellular.
CO2 sinks and collects in cellars and pits, where it stays without ventilation.
It is colourless and odourless, and at high concentration it is toxic as well as displacing air.
The moment of connecting and disconnecting cylinders is when releases happen.
| Target gas | Carbon dioxide (CO2) |
|---|---|
| Selectable ranges | 0-1000 / 2000 / 5000 ppm / 0-20 %VOL |
| Mounting height | Low, 0.3 to 0.6 m above floor level: the gas is heavier than air |
| Where the detectors go | Low on the wall near the cylinders or bulk tank; near the cellar entrance; in the dispense room beside the regulators |
| Outputs | Two alarm relays, 4-20 mA and RS485 Modbus RTU, all at once |
| Reporting | RS485 into a Genesis controller, then over cellular to alerts and a record |
The detector relays switch the fan, close the valve or sound the beacon locally, with no network involved.
The same reading goes over cellular to the people on the alert list, wherever they are, with acknowledgement recorded.
Concentration, time and duration are kept on a record that exports to Excel, for the incident review and the next inspection.
The ppm ranges cover ventilation and air quality; the 0 to 20 %VOL range covers leak detection around bulk CO2 storage, where concentration can climb far beyond the ppm scale.
The NIOSH Pocket Guide lists a recommended exposure limit of TWA 5000 ppm (9000 mg/m³) ST 30,000 ppm (54,000 mg/m³), an OSHA permissible exposure limit of TWA 5000 ppm (9000 mg/m³) and an IDLH of 40,000 ppm. These are United States values; set alarm points against the rules that apply at your site.
Which gases, how many points, where they sit and what they report into. We come back with the cells, the ranges and the positions.
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