- Model Series 9000 NMHC - NonMethane Hydrocarbon Analyzer



The Baseline Series 9000 NMHC is a specialized member of the extraordinary Series 9000 family of gas analyzers. The Series 9000 is the candidate of choice whenever accurate, reliable total, Methane, and Non Methane analysis is required. The Series 9000 analyzer provides unparalleled flexibility and offers continuous, fully automated gas analysis over a broad range of concentrations.

The Series 9000 NMHC is designed to measure the total, methane, and non-methane hydrocarbon content of gas samples. The analyzer has a generous complement of analog, digital and logic output capabilities.

The analyzer is based on a flame ionization detector (FID) with FlowGuard electronic control that delivers a small portion of the sample gas to the detector flame. During the combustion process, organic or hydrocarbon-based gases in the sample are ionized then they are detected by the instrument and reported as a concentration.

The Series 9000 NMHC can be configured with internal components for single or multipoint analysis of non-condensing gas samples. The automatic calibration feature enhances the long-term analytical stability of the instrument. These features place the instrument well ahead of the competition in performance, automation, and configurability.

The Series 9000 NMHC is designed to continuously monitor the total hydrocarbon content of non-condensing gases in a variety of applications, such as:

  • Ambient Air Monitoring Networks
  • Clean Rooms
  • Air & Oxygen Purity in Air Separation Plants

  • Flame ionization detector.
  • 3U case, 19' (48.3cm) rack mountable.
  • Hydrocarbon detection from sub-ppm to 1000ppm (Methane).
  • Automatic calibration at user-defined intervals.
  • Internal, multipoint sampling option.
  • FlowGuard electronic control of fuel, air and sample.
  • Electronic back-pressure regulator with sample bypass system ensures fast response.
  • Discrete, multilevel concentration & fault alarms.
  • Programmable analog output ranges.
  • Programmable relays for concentration alarms, events and diagnostics.
  • Automatic FID ignition, with automatic shut-off of sample, fuel and combustion air.
  • Remote operation via RS-232 and Ethernet.
  • Graphical display and easy to use menu system.
  • Optional 9000 Keeper software to monitor and control the instrument remotely.

  • Detector: Flame ionization detector (FID)
  • Oxidizer: Oxidizes NonMethane gasses.
  • Range (as Methane):
    • MDQ 0.03ppm, Full-scale 1 - 200ppm (O2 Balance)
    • MDQ 0.06ppm, Full-scale 1 - 200ppm (Air Balance)
    • MDQ 0.1ppm, Full-scale 1 - 1000ppm (Air Balance)
  • Repeatability: ±1% Full-scale response
  • Drift: ±1% of Full-Scale over 24 hours
  • Response Time: T90 < 30 sec, Switching < 3 minutes (The Sample Mode switching time is programmable)
  • Alarms: Multilevel concentration and fault alarms that result in audible and visual alarms. Alarms may also be mapped to relays to control external equipment.
  • Sampling: Internal single or multipoint modules for pre-filtered (
  • Calibration: Programmable automatic or manual calibration
  • Support Gas: Hydrogen 35 cc/min (H2He Blend 100cc/ min), Air 175 cc/min (typical). Hydrocarbon content must be less than 1 ppm. Fuel blend options available, consult Baseline.

  • Dimensions: 19.00' (48.3 cm) W x 14.25' (36.2 cm) D x 5.25' (13.3 cm) H
  • Weight: < 20 lb (9.07 kg)
  • Configuration: Bench-top or rack-mount 19' (48.3cm) panel
  • Connections: 1/4' (6.35 mm) tube fitting connectors
  • Operating Temperature: 32 to 104°F (0 to 40°C)
  • Operating Humidity: 0 - 95% (non-condensing)

  • Power: 90 - 230 VAC, 50/60Hz, 3A
  • Display: 3.4' (8.6cm) x 4.5' (11.4cm) graphical display
  • Relay Outputs: 5 programmable form A relays rated to 3A @ 230V AC (optional additional 9 relay output board)
  • Analog Outputs: 1 programmable 0-20mA or 4-20mA isolated output (optional additional 3 analog output board)
  • Digital Outputs: RS-232, Ethernet

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