OMA-300 PROCESS ANALYZERA window into your process.

29 Domino DriveConcord, MA 01742

Tel: 978.287.4222Fax: 978.287.5222sales@a-a-inc.com

□ nova-II UV-VIS DIODE ARRAY SPECTROMETER

□ RUGGED SOLID STATE CONSTRUCTION

□ MULTI-COMPONENT MONITORING

□ LONG-LIFETIME XENON LIGHT SOURCE (~5 YRS)

□ FIBER OPTIC CONNECTIVITY

□ EXPLOSION-PROOF ENCLOSURE AVAILABLE □ AUTOMATED ZERO CYCLE □ SIMPLE GRAPHICAL INTERFACE

□ FACTORY PRE-CALIBRATED □ 4-20mA OUTPUTS; ETHERNET/SERIAL MODBUS

dispersive; 1,024 detectors for full spectrum analysis (1 nm resolution)

no moving parts, low-maintenance performance

no cross-interference between analytes

operator & electronics never exposed to corrosive process gas

FEATURE OVERVIEW

easy to use; video tutorials provided

deuterium & tungsten sources available (application-specific)

APPLICATIONS

PETROCHEMICAL H2S in natural gas; SO2; mercaptans

CHEMICAL Cl2; ClO2; color (e.g. APHA, Saybolt); aromatics (BTX); metal ions (e.g. Cu2+, Ni2+); Br2; MEHQ (polymerization inhibitors); purity of MEG; TiCl4

OIL & GAS H2S (replacing lead acetate tape); moisture in natural gas; mercaptans

PHARMACEUTICAL clean-in-place (trace impurities in reaction chambers)

ENVIRONMENTAL NOX; ammonia; H2S; SO2; HF; Cl2; BTX

SEMICONDUCTOR CMP slurry health; proper ratios in SC1, SC2, DSP; HF etching baths; metal ions in electroplating & wastewater; wafer-level quality assurance

THE OMA-300 IS OUR FLAGSHIP ANALYZER—the technology that built AAI. At its core lies the nova-II, an industrial-grade UV-VIS spectrometer. The OMA-300 can be tailored to a variety of applications because of its fundamental design: the diode array continuously monitors 1,024 wavelengths, allowing great flexibility and selectivity for component absorbance ranges.

The Eclipse software provides a simple and clean user interface, but under the hood it houses the robust, proprietary algorithms that govern highly accurate multi-component monitoring. For most applications, this system indisputedly has the fastest response time in the industry. The OMA-300 has earned a reputation in the field for stable, automated performance and is repsonsible for turning AAI engineering into a trusted global brand.

OMA-300 PROCESS ANALYZERPrinciple of Operation: UV Absorbance Spectroscopy

AAI products employ spectroscopy in analysis of chemical composition. As demonstrated by the Beer-Lambert Law, the concentration of a given component is directly proportional to its absorbance (the quantity of light it absorbs or scatters) at a specified light wavelength.

In the OMA-300, white light is transmitted via fiber optic cable from the light source to the flow cell. In the flow cell, the gas sampled from the process stream interacts with the light signal. Each gaseous component has a unique spectral footprint, meaning that each analyte absorbs different quantities of light at different wavelengths. If the concentration of an analyte increases, so does its absorbance at the monitored wavelengths.

After passing through the sample, the light travels via fiber optic cable to the holographic grating, which physically separates the white light into its constituent wavelengths. The grating focuses the differentiated wavelengths onto designated photodiodes in the spectrometer.

The Spectrometer

The heart of the OMA-300 is the nova-II spectrometer. Its diode array contains 1,024 photodiodes--each designated to detect a specific wavelength. Collecting light intensity data from all these diodes simultaneously, the analyzer continuously produces full spectra of analyte absorbance at an ultra-fine resolution (nearly 1 nm). This entire process--from the xenon lamp to the diodes--is instantaneous and involves no moving parts, giving the OMA-300 the fastest response time in the field.

In spectroscopic stream analytics, higher light transmittance means robust data. This system is designed strictly to optimize light throuput. The dispersive holographic grating in the nova-II improves upon the Czerny-Turner design by erasing the need for focusing mirrors: having fewer reflective elements reduces stray light and contributes to a more stable spectrometer construction. On the sampling end, the flow cell optics are precisely aligned for repeatability, and our fiber optic cables are manufactured in-house to ensure maximal transmittance.

OMA-300 PROCESS ANALYZER

• DIODE ARRAY 1,024 photodiodes for high-res spectra

• BROAD SPECTRAL RESPONSE 190-800nm wavelength range

• MAXIMAL LIGHT THROUGHPUT state-of-the-art optics, powerful Xe source

• EXCEPTIONAL IN LOW UV minimal stray light (no extraneous focusing mirrors)

• MINIMAL DARK CURRENT• CMOS ANALOG CIRCUITRY low noise, low power

consumption

• ETHERNET INTERFACE FOR REMOTE ACCESS

Multi-Component Analysis

Often times, multiple components in a process stream will show strong absorbance in the same spectral region. Consider one of our environmental CEMS (continuous emissions monitoring systems) applications, which requires analysis of the pollutants SO2 and NOX in a stack gas stream. SO2, NO, and NO2 all absorb light within a tight UV range; most optical analyzers will struggle to determine how much each analyte is contributing to the total absorbance in that narrow region. In fact, common analysis techniques inovolve exorbitant measures like oxidizing all NO into NO2, simply so a single-component analyzer can handle a collective NOX concentration reading. This style of measurement is indirect, requires expensive catalysts and ozone, and multiplies the margin of error--just an illustration of what can be gained from true multi-component analysis.

The OMA-300 overcomes cross-interference by obtaining a full, high-resolution spectrum and applying a set of proprietary algorithms to the data. The mathematical routine--”over-determination”--uses regression equations, with constants harvested from standard absorbance spectra, to de-convolute the individual components’ absorbance from the composite absorbance. Essentially, the software solves for the unknowns (component concentrations) using the additive absorbance data from hundreds of individual wavelengths simultaneously. The accuracy of this method is unrivaled.

Sampling System

AAI builds custom sampling systems for many applications; our design proceeds from the needs of the process to the drawing board, not vice versa. Our basic model sampling system provides an automated zero cycle, an integrated flow cell, a back pressure regulator, flowmeters for fast loop and sample loop flow control, and built-in filtration. The flow cell can handle up to 3,000 lbs of pressure and 150 °C, and its user-friendly design makes it extremely simple to maintain.

The AAI Brand

Applied Analytics, Inc. manufactures process analyzers and sampling systems for the chemical, petrochemical, power generation, pharmaceutical, and semiconductor industries, as well as various environmental applications. We have over two decades of experience in designing and installing monitoring solutions that are rugged in their stability and elegant in their automated performance.

nova-II FEATURES

Measurement Technology nova-II UV-VIS diode array spectrometer

Light Source pulsed xenon lamp (~5 year lifespan); deuterium and tungsten sources available

Sample Introduction flow-through cell; standard or custom-design sampling system (optional)

Repeatability ±0.5 % of scale

Photometric Accuracy ±0.004 AU

Calibration for many applications, factory calibrated with certified calibration gases; for safety rea-sons, some applications require on-site calibration

Verification easy verification/validation with standard certified gas samples and neutral density filters

Ambient Temperature standard: 0 to 55 °C (32 to 131 °F)optional: -20 to 55 °C (-4 to 131 °F)

Sample ConditionsTemperature

Pressure

immersion probe: -20 to 150 °C (-4 to 302 °F)flow-through cell: -20 to 150 °C (-4 to 302 °F)

immersion probe: 100 bar (1470 psig)flow-through cell: 10 bar (147 psig)

Environment indoor/outdoor (no shelter required)

Size analyzer: 20” H x 16” W x 8” D (510mm H x 410mm W x 200mm D)optional basic sampling system: 24” H x 30” W x 8” D (610mm H x 760mm W x 200mm D)

Weight 32 lbs. (15 kg)Wetted Materials analyzer: stainless steel 316/316L; K7 glass; Viton

optional basic sampling system: stainless steel 316/317; quartz; VitonOutputs one galvanically isolated 4-20mA output per component; modbus TCP/IP (optional);

RS232 (optional); Fieldbus, Profibus, and HART (all optional); four digital outputs for fault and sampling system control (user programmable)

Electrical Requirements 85 to 264 VAC 47 to 63 HzPower Consumption 45 wattsArea Classification General Purpose (standard) / Class I, Div. 2 (optional) / Class I, Div. 1 (optional) /

ATEX Exp II 2(2) GD (optional)

OMA-300 PROCESS ANALYZER SPECIFICATIONS

GENERAL PERFORMANCE

OPERATING CONDITIONS

HARDWARE

AAI North AmericaHeadquarters

29 Domino Drive, Concord, MA 01742Tel: 978.287.4222 Fax: 978.287.5222

Houston10685-B Hazelhurst Drive, #8677, Houston, TX 77043

Tel: 713.589.9896 Fax: 713.513.5210Baton Rouge

Tel: 225.445.8326 Cell: 225.305.0822Fax: 225.612.7119

AAI Southeast Asia37th Floor, Singapore Land Tower50 Raffles Place, Singapore 048623Tel: +65 6829 7057 Fax: +65 6829 7070AAI Middle EastPO Box 9651, Sharjah, United Arab EmiratesTel: +971 6 557 8525 Fax: +971 6 557 8524AAI IndiaApplied Analytics (India) Private Limited, Gujarat, IndiaTel: +91-261-279 0508 Fax: +91-261-278 5000

www.a-a-inc.com sales@a-a-inc.com

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