Total Sulfur in CO2 Applications


The BevAlert Model 8900 provides a total sulfur measurement for sulfur compounds in Carbon Dioxide. The measurement includes organic sulfides, Sulfur Dioxide, Carbonyl Sulfide, and Hydrogen Sulfide.

The instrument is utilized by Specialty Gas Manufacturers and the Food and Beverage Industry to monitor sulfur compounds in CO2 used in carbonated beverages.

The sample entering the GC is passed through a proprietary catalyst where sulfur containing compounds are reduced to Hydrogen Sulfide. The


Measuring total sulfur content in beverage grade carbon dioxide.

  • Total measurement of organic sulfides, SO2, COS, and H2S
  • Interference free response
  • Automatic baseline adjustment for long-term stability
  • Automatic calibration
  • Analog output ranges are user selectable
  • Concentration and diagnostic alarm relays
  • Multipoint sampling options
  • Graphic display of current or historical concentrations
  • RS-232 and optional LAN
Analysis Time 300 seconds
Detector PID (High-sensitivity PID Optional)
Column Capillary
Oven Temperature 50ÂșC, Nominal
Carrier Gas Carrier Gas Hydrogen, 6 cc/min, 30 cc/min for reactor, Nominal
Lower Detection Limit <20 ppb as Hydrogen Sulfide (High-sensitivity PID <1 ppb as Hydrogen Sulfide optional)
Accuracy 1% of Full-scale
Precision 2% of Measured Value
Span Drift (24HR) <2% of Full-scale
Sample Flow Rate 100 – 300 cc/min, typical
Output Analog: (1) 0-20ma or 4-20ma loop power supplied, isolated. Selectable for: gas concentration, unintegrated detector signal. Options for up to 20 additional programmable 0-20ma, 4-20ma or voltage outputs: 0-1V, 0-5V, or 0-10V.
Relays (5) User programmable relays for concentration and diagnostic alarms (1A @ 30Vdc). Options for up to 32 additional relays available.
Inputs Optional digital input board for 3 contact closure inputs. Supports start analysis, start calibration, and analyze calibration gas sample.