Application:

• Monitoring workplace exposure limits

Analyzer

The Series 8900 Analyzer provides direct measurement of Acrylonitrile and n-Butyl Acrylate in ambient air. This instrument is utilized in industrial plants to monitor workplace exposure limits.

The Series 8900 Analyzer employs a flame ionization detector (FID) as the sensing element. A dual column configuration with a timed backflush to vent is used to strip off moisture and heavier hydrocarbons. A precut 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 Acrylonitrile, n-Butyl Acrylate, and other similar components are eluted to the analytical column. Contaminants on the pre-cut column are backflushed to vent. Acrylonitrile and n-Butyl Acrylate are separated from any potentially interfering components on the analytical column and elute to the detector for analysis.

Features

• Direct measurement of Acrylonitrile and n-Butyl Acrylate
• 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: <300 seconds
Detector: FID
Column: Capillary
Oven Temperature: 90°C, Nominal
Carrier Gas: Hydrogen, 7cc/min, Nominal
Lower Detection Limit: <0.5 ppm
Accuracy: 1% of Full-scale
Precision: 2% of Measured Value
Span Drift (24HR): <2% of Full-scale
Sample Flow Rate: 250-500cc/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.
Digital: RS-232, optional Local Area Network
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.