OMA Series™Process Analyzers


OMA-300 Standard Analyzer

The default version of the OMA Process Analyzer is provided in a wall-mounted enclosure. The system is highly customizable including options for enclosures, wetted materials, and hazardous area classifications


What is the OMA?

The OMA is an industrial device which measures a high-resolution absorbance spectrum in a continuously drawn sample from a liquid or gas process stream. Harvesting this rich data, the OMA provides real-time analytics for the process stream, including chemical concentrations, purity, and color.

What does the OMA measure?

Chemical concentrations  The OMA can simultaneously monitor up to 5 chemicals in the sample stream. All analytes must have distinct absorbance curves in the wavelength range of the OMA

Chemical purity  By measuring a high-resolution transmittance spectrum, the OMA can very precisely detect impurities in the sample fluid by sudden changes in the spectral structure.

Physical properties  Various properties such as the heating value of a fuel or the octane of a gasoline blend can be powerfully correlated to the absorbance spectrum of the sample.




  • Continuously measures up to 5 chemicals’ concentrations in a liquid or gas process stream
  • Totally solid state build with no moving parts — modern design for low maintenance
  • Ultra-safe fiber optic design with dedicated sample flow cell — no sample fluid in analyzer enclosure
  • Decades of field-proven performance in the world’s harshest industrial environments




Technical Data

Measurement Principle

Dispersive UV-Vis / SW-NIR absorbance spectrophotometry


nova II™ Spectrophotometer

Spectral Range

200-800 nm (UV-Vis model) or 400-1100 nm (SW-NIR model)

Light Source

Standard: pulsed xenon lamp with average 5 year lifespan

Fiber Optic Cables

Standard: 600 μm core 1.8 meter fiber optic cables (qty = 2)

Sample Medium

Gas or liquid

Sample Introduction

Standard: stainless steel 316L flow cell with application-dependent path length

Sample Conditioning

Custom design if necessary

Analyzer Calibration

If possible, analyzer is factory calibrated with certified calibration fluids; no re-calibration

required after initial calibration; measurement normalized by Auto Zero

Reading Verification

Simple verification with samples or neutral density filters

Human Machine Interface

Applied Analytics standard HMI: industrial controller with touch-screen LCD display

User Interface

ECLIPSE™ Runtime Software

Data Storage

32GB Solid State Drive


Standard: wall-mounted, carbon steel NEMA 4 enclosure

Measuring Parameters


±0.5% of scale

Photometric Accuracy

±0.004 AU

Sample Conditions

Sample Temperature

Using immersion probe: -20 to 150 °C (-4 to 302 °F)

Using standard flow cell: -20 to 150 °C (-4 to 302 °F)

Using optional sample cooling: up to 1000 °C (1832 °F)

Sample Pressure (max)

Using immersion probe: 100 bar (1470 psig)

Using standard flow cell: 206 bar (3000 psi)

Ambient Conditions

Analyzer Environment

Indoor/Outdoor (no shelter required)

Ambient Temperature

Standard: 0 to 35 °C (32 to 95 °F)

With optional temperature control: -20 to 55 °C (-4 to 131 °F)

To avoid radiational heating, use of a sunshade is recommended for systems installed in

direct sunlight.

Physical Specifications


Analyzer: 24” H x 20” W x 8” D (610mm H x 508mm W x 203mm D)

SCS (if included): custom size


Analyzer: 32 lbs. (15 kg)

SCS (if included): variable depending on custom build

Wetted Materials

Standard: K7 glass, Viton, stainless steel 316L

Various custom materials available

Utility Requirements

Electrical Requirements

85 to 264 VAC 47 to 63 Hz

Power Consumption

45 watts



1x galvanically isolated 4-20mA analog output per measured analyte

2x digital outputs for fault and SCS control

Optional: Modbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART; more

I/O Electronics

Voltage/Current Interface Module (i.e. I/O Board)


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