The PetroAlert® Model 8900 Gas Chromatograph combines the selectivity of gas chromatography with the sensitivity, broad dynamic range, and hydrocarbon selectivity of a flame ionization detector (FID) providing fast analysis of C1-C5 hydrocarbons required in Mud Logging for oil and gas exploration.

The Series 8900 is a multi-purpose gas chromatograph designed to continuously monitor single or multiple gas components in a wide range of applications. The analyzer is microprocessor based and contains powerful embedded firmware. This makes it an online instrument with GC technology that is virtually transparent to the end user.

The 8900's automatic calibration is ideal for unattended operation. It can be set up on a bench-top or rack-mounted, and its compact size makes it transportable. There are a variety of industry standard outputs, such as network (LAN), RS232, multiple 4-20 mA or 0-20 mA, and multiple relays for alarm, diagnostics or user specified timed events.

The application is configured at the factory before delivery with the SkyChrom™ software from Baseline®. The computer can be disconnected and the analyzer will operate independently. When connected to SkyChrom™, data can be collected in a universal text format with a user definable data export utility for reports. Chromatograms can be stored continuously or based on events such as alarms.
Unit of Measure


N/A Analysis of C1-C5 Hydrocarbons (Methane, Ethane, Propane, Butanes, and Pentanes) including Propylene.



  • Detection limit of <10ppm as Methane
  • Fast analysis <60 seconds
  • Continuous unattended operation, operates with or without a computer
  • Automatic baseline adjustment for long-term stability
  • Local and remote calibration
  • Automatic FID ignition
  • Automatic Hydrogen & Combustion Air shutoff for maximum safety
  • Analog output ranges are user selectable
  • Concentration and diagnostic alarm relays
  • Outputs include digital, user definable analog and user definable logic
  • PC based SkyChrom™ software stores multiple analytical methods
  • Onboard short-term data storage

  • Specifications


    N/A Single point analyzer for pre-filtered (≤ 0.1 microns), non-condensing samples


    N/A Standard: (1) 10-Port valve (additional valves optional)


    N/A Automatic or Manual using a dedicated standard


    N/A Single FID


    N/A ± 5% Full-scale

    Linear Range

    N/A 0 - 100% as Methane


    N/A <10ppm Methane

    Oven Temperature

    N/A 65ºC


    N/A Analog: Standard: (1) 0-20 mA or 4-20 mA loop power supplied, isolated.
    Digital: Standard: RS-232 output, LAN (Local Area Network)


    N/A Standard: (5) programmable (latched/not, NE/NNE, NO/NC) as contact closure (1A @ 30Vdc).

    Physical Dimensions

    N/A 17.41" (44.2cm) W x 9.36" (23.8cm) H x 14.83" (37.7cm) D

    Nominal Weight

    N/A 30 lb (13.64 kg)


    N/A Bench-top or rack-mount 19" (48.3cm) panel


    N/A Digital vacuum fluorescent, 20 characters x 2 lines


    N/A 90 - 260 VAC, @ 50-60 Hz (as specified)

    Operating Conditions

    N/A Temperature: 32-104 ºF (0-40 ºC)
    Humidity: 0-95%, non-condensing

    Gas Connections

    N/A 1/4" (6.35mm) or 1/8" (3.175mm) O.D. tube fitting connectors or consult Baseline®

    Support Gas

    N/A Combustion air (HC free air), Carrier gas-UHP H2, Fuel - UHP H2


    N/A General purpose, wallmount, X-purged or Z-purged

    Options & Accessories


    N/A 8950 Multipoint Sampler (4/8/16 pt) w/ up to 16 analog outputs & 32 relays Built-in or external sample pump Injection port (on sample loop)


    N/A Analog output board - up to 20 additional programmable 4-20 mA outputs Relay board - up to 32 additional programmable relays Voltage outputs - 0-1 V, 0-5 V or 0-10 V (others on request)


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


    N/A SkyChrom™ external integration, GC setup and data acquisition software for PC

    Gas Generators

    N/A Zero air or Hydrogen

    Calibration Methods

    N/A Gas cylinder, response factors