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The Series 8900 Hydrogen Sulfide and Carbon Disulfide Analyzer provides direct measurement of H2S and CS2 in ambient air. This instrument is utilized for continuous emission monitoring.

The Series 8900 H2S and CS2 Analyzer employs a Photoionization detector (PID) as the sensing element. 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 H2S, CS2, and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. H2S and CS2 are separated from potentially interfering components on the analytical column and elute to the detector for analysis.
Unit of Measure

Applications

N/A Continuous emissions monitoring.

Features

N/A

  • Direct measurement of Hydrogen Sulfide and Carbon Disulfide
  • Interference free response
  • Automatic calibration for unattended operation
  • Automatic baseline adjustment for long-term stability
  • Analog output ranges are user selectable
  • Summary or TWA report generation
  • Graphic display of current or historical concentrations
  • Multipoint sampling options
  • RS-232 and optional LAN

    • Specifications

    Analysis Time

    		 N/A <180 seconds

    Detector

    		 N/A PID

    Column

    		 N/A Packed

    Oven Temperature

    		 N/A 40ºC, Nominal

    Carrier Gas

    		 N/A Nitrogen, 13.5 cc/min, Nominal

    Lower Detection Limit

    		 N/A 20 ppb

    Accuracy

    		 N/A 1% of Full-scale

    Precision

    		 N/A 2% of Measured Value

    Span Drift (24HR)

    		 N/A <2% of Full-scale

    Sample Flow Rate

    		 N/A 250 - 500 cc/min, typical

    Output

    		 N/A
    Digital: RS-232, optional Local Area Network     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

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

    Inputs

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