GMAS analog carbonation tester – CO₂ measurement for fermenter

The GMAS analog carbonation tester is a professional device designed to measure the CO₂ content of carbonated beverages directly in cylindroconical tanks, conditioning tanks or kegs. It provides accurate readings in g/L and volumes, essential for controlling carbonation during production.

Why choose this product?

• Cost‑effective solution for measuring CO₂ in tanks and kegs
• Proven technology, thousands of units in service
• Repairable device, spare parts available

Technical specifications

• CO₂ range: 2 to 7.8 g/L (1 to 4 vol)
• CO₂ accuracy: 0.2 g/L or 0.1 vol
• Temperature: −3 to +30 °C (accuracy 0.5 °C)
• Pressure: 0–400 kPa (0–4 bar), accuracy 1.6%
• CO₂ reading: g/L and volumes nomogram
• Dimensions: 270 × 200 × 140 mm
• Weight: 1.1 kg
• Included accessories: silicone hoses
• Required but not included: keg sampling head (type to be specified)
• Operation: manual agitation

Rolling Beers Tips

• Stabilize pressure perfectly before reading to improve repeatability.
• Always use a sample taken with a suitable head to avoid false results.
• For faster measurements, compare with the GMD model (automated).

Technical FAQ

• Is the GMAS suitable for craft breweries? Yes, it is designed for small‑scale production with limited budgets.
• Do I need to shake the device? Yes, manual agitation is required to release CO₂.
• Is the keg sampling head included? No, it must be specified and added separately.