Measuring aromatic hydrocarbons (BTEX) for pollution control and environmental monitoring - Environmental - Environmental Monitoring

The Series 8900 BTEX Analyzer provides direct measurement of Benzene, Toluene, Ethylbenzene, and Xylenes in ambient air. This instrument is utilized in ambient air networks around metropolitan areas and fence-line monitoring at industrial sites. The Series 8900 BTEX Analyzer employs a photoionization detector (PID) as the sensing element. This detector is specific to volatile organic compounds. The Benzene, Toluene, Ethylbenzene, and Xylene`s 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 moisture and heavier hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed volume of sample is carried to the pre-cut column. Backflush is timed so that only the BTEX and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. Benzene, Toluene, Ethylbenzene, and Xylenes are separated from potentially interfering components on the analytical column and elute to the detector for analysis.

  • Direct measurement of Benzene, Toluene, Ethylbenzene, and Xylenes in Ambient Air
  • Interference free response
  • Automatic calibration for unattended operation
  • Automatic baseline adjustment for long-term stability
  • Optional analog outputs of Benzene, Toluene, Ethylbenzene, Xylenes and detector signal
  • Analog output ranges are user selectable
  • Graphic display of current and historical concentrations
  • Multipoint sampling options
  • RS-232 and optional LAN