Australia's #1 industrial directory for equipment & suppliers

OMA-300 On-line UV/VIS/NIR Liquid/Gas Analyser

Supplier: B-R Controls

The OMA-300 is a versatile on-line analyser that utilises the absorption of UV/VIS/NIR to measure a large number of components in both gas and liquid streams.


The OMA-300 from Applied Analytics is a diode-array fiber-optics process spectrophotometer, continuously measuring the absorbance spectra of the sample. It is constructed of a light source, a dispersion device to select a particular wavelength, a sample area, and a detector. The OMA uses a tungsten, xenon or deuterium light source (depending on application), a holographic grating to disperse the light according to its wavelength, a fiber optics probe to transfer the light to and from the sample and a diode array detector which converts the light intensity into electrical signal. A full spectrum is continuously measured and analyzed, via a multi wavelength method, to give the composition of the stream.

The OMA-300 is designed to address on-line applications that require cost effective, accurate continuous concentration monitoring. A simple touch-screen based user interface is ideal for single and multi component analysis and allows for quick setup and calibration.

Wavelength ranges from 200 - 1190nm are continuously and instantaneously monitored by a diode array spectrophotometer with 1024 elements. A nonvolatile memory section of the analyzer contains the calculation method, wavelength ranges and the name of the analyte to be displayed on the screen. Standard outputs includes 4-20mA output and digital I/O’s.  Since the analyzer incorporates modbus communication protocol it can readily communicate with external physical devices such as PLCs, RTUs, and controllers.

The OMA-300 analyser can also be supplied with a sampling system designed to integrate into your process.  The sampling systems also integrate automatic zero facilities to enable the analyser to maintain high accuracy whilst requiring minimal interference from site personnel.

Applications of OMA-300 On-line UV/VIS/NIR Absorption Analyser are varied and include:

  • Tail Gas Analyser  - Sulfur Recovery Applications
  • H2S in Natural Gas
  • Stack Gas Analyser - NOx, SOx, CO2, NH3
  • Oil in Water Monitor
  • Aromatics Analyser (BTX)
  • Metal Ions in recovery streams

Benefits of OMA-300 On-line UV/VIS/NIR Absorption Analyser include:

  • Solids State Diode Array - no moving parts or filters
  • Various sampling options - insitu probe, extraction and flow through
  • Multi component analysis
  • Wide wavelength range measured at 1nm increments

For further information or to discuss your application requirements please visit our website or contact us using the email feature below.