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Acetaldehyde, Methanol, & Benzene in CO2 Applications

Acetaldehyde, Methanol, & Benzene in CO2 Applications

Product Details:


Product Description

Acetaldehyde, Methanol, & Benzene in CO2 Applications

The BevAlert Model 8900 provides direct measurement of Acetaldehyde, Methanol, and Benzene (AMB) in Carbon Dioxide.

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

The BevAlert Model 8900 employs a photoionization detector (PID). The AMB in the gas sample are physically separated using proprietary GC columns. A dual-column configuration with timed backflush to vent is used to strip off


Measurement of AMB in beverage grade carbon dioxide

  • Direct measurement of Acetaldehyde, Methanol, and Benzene in Carbon Dioxide
  • Interference free response
  • Automatic baseline adjustment for long-term stability
  • Automatic calibration
  • Analog output ranges are user selectable
  • Concentration and diagnostic alarm relays
  • Graphic display of current or historical concentrations
  • Multipoint sampling options
  • RS-232 and optional LAN

Analysis Time

<360 seconds


PID (High-sensitivity PID Optional)



Oven Temperature

100ºC, Nominal

Carrier Gas

Nitrogen, 15 cc/min, Nominal

Lower Detection Limit

<50ppb Acetaldehyde, <2ppm Methanol, <2ppb Benzene


1% of Full-scale


2% of Measured Value

Span Drift (24HR)

<2% of Full-scale

Sample Flow Rate

250 – 500 cc/min, typical


Analog: (5) 0-20ma or 4-20ma loop power supplied, isolated. Selectable for: gas concentration, unintegrated detector signal. Options for up to 16 additional programmable 0-20ma, 4-20ma or voltage outputs: 0-1V, 0-5V, or 0-10V.
Digital: RS-232, optional Local Area Network


(5) User programmable relays for concentration and diagnostic alarms (1A @ 30Vdc). Options for up to 32 additional relays available.


Optional digital input board for 3 contact closure inputs. Supports start analysis, start calibration, and analyze calibration gas sample.


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