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Measurement & Assessment

OdaLog®

Aromatrix is the sole distributor for the OdaLog® in Singapore, Malaysia and Thailand. Developed by App-Tek International Pty Ltd, the OdaLog has a proven reputation in the wastewater industry worldwide as a tool to record and help control levels of H2S gas in sewerage systems and treatment plants.

The OdaLog is splash resistant, robust, small, and able to log data for extended periods of time. It is primarily used by locating it at or close to the source of Hydrogen Sulphide emissions such as within sewerage pumping stations and receiving manholes. Its purpose is to log levels of H2S in the range 0-200 ppm over an appropriate time period (for example, seven days).

Key Benefits

  • Can be located at source of emission over a period of time
  • Self-secured with anti-theft feature
  • Automatic calibration
  • High memory capacity
  • Wireless connection for downloading and configuring
  • Interfaced to control and telemetry system.
  • Splash and water ingress resistant.


Model types

  • Odalog Logger
    Equipped with data logging functionality for downloading of data in tabular or graphical form.
  • Odalog Detector
    Incorporates safety devices with alarm functionality.
  • Odalog Monitor
    Is a combination of Logger and Detector with data logging and alarm functionalities.


The above models are for single gas meters, each monitoring a specific gas. The following range of gases are available for each model:

  • Oxygen (O2)
  • Carbon Monoxide (CO)
  • Hydrogen Sulphide (H2S)
  • Nitrogen Oxide (NO)
  • Nitrogen Dioxide (NO2)
  • Hydrogen (H2)
  • Sulphur Dioxide (SO2)
  • Ammonia (NH3)
  • Chlorine (Cl2)
  • Hydrogen Cyanide (HCN)


Other Models

OdaLog® 6000: This is a multi-gas monitor which allows multiple gases to
be monitored.

Odalog Methanometer: This model can monitor flammable gases

OdaTrak™ : This is designed to work with the OdaLog® gas logger. The OdaTrak adapter reads data sent from the OdaLog® unit over a fibre optic cable and outputs the corresponding signal to control chemical dosing, trigger alarms, etc.