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OXYvisor™ Oxygen Analyzer


   Second Generation Process Oxygen Analyzer
    for Industrial Process Control & Monitoring

   UL Certification          
   ATEX Certification          

Capabilities & Features
  • Trace Oxygen measurement in gas phase (0.5 ppm to % O2) & liquid applications (1 ppb to % DO).
  • Measurement accuracy, drift, or lifetime not affected by % H2S, CO2, SO2 and H2
  • Auto-Calibration, time-based or via remote activation (RS485 or Digital)
  • Remote Validation with Test Gas Insert via remote activation (RS485 or Digital)
  • Rugged IP66, NEMA 4x enclosure with ambient operation -20 to 55 C
  • Pressure compensation for precision and in-situ extractive gas measurement
  • Hazardous area approvals
    • Zone 2 - IEC/ATEX/CEC/NEC
    • Class I, Div 2 - cULus
  • OXYvisor PC software for configuration, set-up, diagnostic and trending
  • USB data trend storage (.csv file)
  • Works with BOSx, FlexSense and SafeTap oxygen sensors with simple replaceable caps
  • Local display HMI, with through-the-glass operation allows setup and configuration

OXYvisor Display Menus

The OXYvisor optical oxygen analyzer is Barben Analytical’s next generation solution for oxygen measurement in industrial applications. When paired with the BOS optical oxygen sensor’s quenched luminescent technology, the OXYvisor provides the ability to measure oxygen in liquid and gas phase processes.

For more information on Barben Analytical’s BOS Oxygen Sensors and our sample conditioning panel products please refer to the separate data sheets for these products:

      Barben Optical Sensor (BOS) - Data Sheet
      Sample Calibration Panel - Data Sheet

Typical Applications - Gas Phase (g) - Process Oxygen Analyzer
  • O2 in hydrocarbon streams
  • Gathering Lines
  • Vapor Recovery Units (VRU's)
  • Biogas
  • Custody Transfer/Metering Stations
  • O2 detection in nitrogen headers
  • O2 in process streams
    • Ethylene
    • Propylene
  • O2 in nitrogen tank blanketing
  • Trace level oxygen in flare gas
  • Limit of Detection: 0.5 ppm O2 @ 1atm, 20ºC (0.0005 hPa)

Typical Applications - Liquid Phase (l)
  • High pressure produced water Dissolved O2
  • ppb dissolved O2 for waterflood injection
  • Oxygen in methanol and ethanol
  • Oxygen in oils
  • Dissolved O2 in liquid process streams
  • Dissolved O2 in product streams
  • Limit of Detection: 1 ppb Dissolved O2

Principle of Operation

The OXYvisor analyzer uses an optical phase fluorometric technology to measure process oxygen. Phase modulation of the luminescent decay time of an oxygen specific luminophore allows the calculation of the partial pressure of oxygen concentration with the process stream.

The analyzer uses an LED to emit blue light through fiber optic cable down to the luminophore which resides at the sensor tip [Fig 1]. The luminophore absorbs the energy and rises to an excited state indicated by red light returned through the fiber optic cable. The properties of the emitted light are measured through a photomultiplier tube back at the spectrometer within the analyzer.

In the absence of oxygen, the excited luminophore will fall back to its ground state at a specific intensity and phase angle. When oxygen is present it quenches the fluorescence at a lower rate proportional to the oxygen concentration [Fig 2.]. The phase shift and intensity differences between the excitation source and the fluorescent signal is measured and the oxygen concentration is calculated [Fig 3].

The resulting measurement is specific to oxygen concentration. The luminophore is unaffected by other contaminant gases and flow rate. The measurement is applicable in both gas and liquid phase. Temperature compensation is required to account for quenching efficiency at different temperatures and pressure compensation is required to measure at process pressured different from the pressure at time of calibration.

Figure 1
 Figure 1

Figure 2
Figure 2

Figure 3
Figure 3

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