Skyside provide a range of Odour Monitoring and Testing solutions throughout South Africa, Botswana, Tanzania, Namibia and Mozambique.

As one of the leading Odour Monitoring and Testing in Sub-Saharan Africa, we have adopted the best methods and help you create your required report, ensuring you are meeting the correct standards.

We also utilise our eNose equipment for continuous air quality monitoring.
Odour Monitoring South Africa

Wouldn’t it be great to have a tool that warns you in real-time about odour incidents?

Electronic noses, often referred to as e-Noses, are compact instruments comprising of an array of sensors that respond to small variations in the odorous gas concentration in ambient air.

Industrial gas emissions may contain mixtures of trace gases that can be detected by eNoses. eNoses are exposed to the ambient air continuously ‘sniffing’ the environment and give qualitative, real-time information about the air composition.

Multiple eNoses linked together form that we call an ‘eNose network’ and can be a powerful tool to identify the source of gas emissions.

eNoses are distinctive in their ability to sense a broad spectrum of gas mixtures and is important to note that it is not a single gas analyser and therefore cannot normally read the concentration of specific gases in the atmosphere.

The eNose features two functions of gas emissions detection:

Anomaly Detection

The eNose detects changes in the air composition in its vicinity that have the potential to pose a risk of odour nuisance and gas related risks.

Using alert levels, the eNose will warn about anomalous air conditions.

Pattern Recognition

eNoses can be trained to recognise the presence of atmospheric trace gas composition that pose a risk of odour nuisance or safety.

A mixed signal creates a pattern, similar to a fingerprint for each source, that correlates to the exposing gas mixture.

The principle of pattern recognition of the eNose is to compare the patterns to a set of reference patterns such as fuel oil vapour, crude oil vapour, H ₂S-rich vapours and many more.

The eNose unit is a compact instrument that consumes less than 2 Watts of electrical power (up to 48 Watts/day).

It can be powered by either the main power grid, or by solar energy using a solar panel.

Visit our Ambient Air Testing, Stack Emissions Testing, Odour Monitoring, Noise Monitoring and Compressed Air Testing pages:

Odour Testing South Africa Botswana Tanzania Namibia Mozambique


The mobile eNose has an embedded GPS-transmitter to enable operators to take the eNose to the site of concern and use a special entry application on a smart phone to enter the perceived smell and intensity at site.

Thus, the mobile eNose response on the spot can be compared to the perception of the human nose.

The mobile eNose can also be used by call-out services in industrial areas during incidents for emission source tracking and tracing.
A grip and a strong magnet allow for easy carrying of the mobile eNose or mounting onto a moving vehicle.
The results of an odour assessment tour can be plotted on a GIS-map to enable data analysis.

Solar Panel eNose

The solar-poweredeNose is the same eNose as the mobile eNose but is mounted to a power unit connected to a solar panel.

During the day, the solar panel powers the eNose and charges a battery pack for overnight operation of the eNose.

There are different mounting options to suit the situation, however the most common is mounting the unit with a supplied metal bracket.

An anemometer (that measures wind speed and direction) can be installed with the system. This data can then be used in conjunction with the eNose data to conduct a more complex data analysis such as emission source tracing and emission dispersion tracking.




Option 1 - eNose with Solar panel mounted on a pole.


Option 2 - eNose with anemometer and solar panel mounted on a pole.

System Architecture

Having an eNose that is connected to a remote server enables you to swiftly track and trace the release and dispersion of gas emissions at an early stage.

Software on the remote server interprets the data registered by the eNoses in real-time, and then triggers an immediate alert as soon as it detects a change in the air composition that has the likelihood of being annoying, hazardous or may pose other gas related safety risks.

Additionally, analysis can be done by individuals through an online WebSuite where all data is stored.


Data Collection – eNoses in the field are remotely connected to a server in a data centre via a wireless GPRS link. The raw eNose data are transmitted to the remote server periodically (adjusted accordingly).

Data Handling – The raw data is automatically processed by software on the remote server. Dedicated software on this computer allows for online anomaly detection and pattern recognition.

Presentation – The results of the processed eNose data are presentable in different ways. In the control room the eNose data is real-time displayed on the Websuite dashboard system, accessible on mobile and fixed devices.

Real Time Monitoring

The WebSuite is an online dashboard that represents past and present eNose data and is available for all eNoses.

This management information system is designed to be user friendly and is engineered to display and visualise all acquired eNose data to get complete insights into air quality.

The WebSuite also offers a set of tools for data analysis, emissions source tracking, emissions plume dispersion tracing and fingerprint entry.

Consultancy and Reporting

Skyside offers additional support, such as:

  • eNose data interpretation
  • Analysis of odour complaints
  • Performance of eNose network reporting (monthly, quarterly, or yearly)
  • Training

eNose Technical Specifications

eNose sensors:
4 semi-conductor gas sensors
Optional sensors (component specific):
H2S, NH3, SO2, HCI, NO2, O2, O3, and Particulate Matter
External grid power supply (e.g., Solar panel, and battery
Power supply:
12-35 VDC, 3 Watt (average)

Height: 100-125mm, Diameter: 160mm, Weight: 950 g


Integrated Stainless Steel Bracket

Update rate:
1 minute by default
Temperature: -10/+50 °C, Humidity: 10-99% (non-condensing)
Optional features:
External anemometer for wind direction and speed

Internal Li-Ion batteries, 24-hours
Backoffice connection:
Automated alert level triggers via SMS/Email

Anemometer Technical Specifications

Senson - Wind Speed:

Solid state magnetic
Range: 0.5—35 m/s
Resolution: 0.1 m/s
Measurement timing: 1 min data log frequency

Sensor - Wind Direction:

Wind vane and potentiometer
Range: 0 —360°
Resolution: 3°
Measurement timing: 1 min data log frequency

Wind Vane and Control Head:
UV-resistant ABS
Wind Cups:
Anemometer Arm:
Black-anodized aluminium
470 mm x 191 mm x 121 mm
0.35 kg (including metal bracket 0.8 kg)

Summary of Features of the eNose:

  • Constantly sniffs environment
  • Pattern recognition of exposed emission
  • Anomaly detection of changes in air composition
  • Wireless connection to back-office server
  • Qualitative measurements of air composition
  • Small device
  • Easily installed
  • Mobile application
Skyside is proud of our distinction of being the first South African emissions and dustfall testing company to achieve ISO 17025 accreditation for our most commonly applied methods and take great pride in the quality of our work.
Recognised in 2016 as the Leaders in Air Quality, we are at the forefront of stack emissions testing and air quality data.
Skyside South Africa


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Skyside Tanzania


Skyside Namibia


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