The OMA Series for H2S Measurement

Intro to H2S Measurement

H2S is often a critical measurement because it is:

•Toxic•Corrosive•Flammable•Odorous•An EPA regulated pollutant which causes acid rain

AAI Technology

AAI systems all employ a single discipline:Solid State Absorbance Spectroscopy

We believe that modern solutions should not have moving parts or consumable products.

Introducing OMA for H2S

A dispersive UV-Vis absorbance spectrophotometer.

OMA Optical Assembly

Inside the OMA

nova II Spectrophotometer

• Full 200-800 nm UV-Vis spectral acquisition in real time• Ultra-fine 1 nm resolution via 1,024 photodiode array• Powerful Xe light source with avg. 5 year lifespan• High signal:noise ratio due to CMOS analog circuitry

Full Spectrum Analysis

Collateral Data

Dynamic Range

Multi-Component Analysis

Full-Spectrum Advantage

Unlike regular photometers, OMA has:

•Zero cross-interference between H2S and other UV-absorbing stream chemicals (e.g. SO2)•Full-spectrum background subtraction – not just a reference wavelength•Wide dynamic range

OMA vs. Regular Photometer

Measuring at a single wavelength is like viewing one small sliver of a horizon.

In a cloudy image, you can guess at the horizon line, but it is difficult because of overlapping visual elements, and you only have one piece of information to look at.

There is no context to verify your guess.

OMA reads the complete spectrum.

This is like viewing the entire horizon. You discern the true horizon line with certainty because its appearance at each and every reference point verifies your perception.

OMA Automation

• Never requires re-calibration – only needs an auto-zero (automatic software procedure lasting 120sec, frequency between 8 and 24 hours depending on application)

• Seamless dynamic range – no dilutions or any human involvement required for wide concentration range

• User-configurable alarms for set-and-forget operation• No consumables to worry about

OMA Flexibility

• Measure H2S and up to 4 additional chemicals synchronously with one OMA

• Multiple customizable measurement ranges – 0-10 ppm and 0-100% with one OMA

• Redefine measurement ranges at any time via software• Repurpose your OMA at any time with a new application

calibration – new species, new background, etc.• Multiplex your OMA to analyze multiple streams with a

single unit• Integrate other detectors into OMA’s central interface

Form Factor: Standard

OMA-300 Wall-Mounted White Carbon Steel Enclosure

Form Factor: Rackmount

OMA-406 Rackmount Analyzer

Form Factor: Portable

OMA-206 Portable Suitcase Analyzer

Explosion-Proof Options

EExp Purged Enclosure

SS316L

EExd EnclosureCast Aluminum

OMA for Offshore Environment

Super Duplex OMA-300 & Sample Conditioner

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