Air Quality and Odour
Monitoring Station

The Scentinal Air Quality and Odour Monitoring Station has been designed to collect data from a variety of sensors and present the sensor data in an easy to understand graphical interface


The Air Quality and Odour Monitoring Station provides high accuracy (ppb level) detection of odorous gases such as H2S, NH3, VOCs, SO2 & odour concentration. SL50’s flexible, intelligent sensor network allows live monitoring of plant odour emissions on Scentroid’s cloud servers. Scentinal’s innovative design offers the most reliable and cost effective odour monitoring solution in the world.

Daily Maintainence

Automatic cleaning and decontamination of all lines every 24 hours within the Scentinal Air Quality and Odor Monitoring Station

Plug and Play Installation

Sensors record GPS position. once powered, central computer will know the exact location of unit, even when moved

Reporting Standards

Traceable back to international standards: e.g. USEPA (40 CFR part 53) and EU (2008 / 50 / EC)

Featured Sensors

PM 2.5 and 10, odour, dust, noise and radiation sensors available

Cloud Access

Unit can be accessed on location or remotely using encrypted cloud based hosting

No Power? No problem!

The Scentinal SL50 can run on solar generated energy

The central monitoring station is hosted on a secure cloud based server allowing remote access via any computer with internet access. This access is restricted and the data is encrypted for maximum security. Users are given a password and user name which will define their permission level.

Mount your Scentinal to a pole, wall, or any other structure with access to power. If no power access is available, install our solar panel kit! The SL50 then serves as an air quality transmitter, and refers all recorded information to you.

Log on to the web based remote monitoring software to view readings, reports, and for unit configuration. Scentinal will automatically:

  • Communicate with central servers using its SIM card
  • Monitor its own GPS position and inform the server of any changes
  • Automatically control it’s internal temperature using a powerful air conditioning/heating system
  • Conduct routine maintenance such as ozone based self cleaning and sensor validation
  • Remote monitoring based on photo-ionization detectors, nondispersive infrared sensors, and electrochemical sensors
  • Measure common and exotic air contaminants to ppb levels
  • Cloud based monitoring server for data collection, reporting, notification, alarms and more
  • Remotely configurable through cloud based monitoring software
  • Automatic cleaning using built-in ozone generator
  • Automatic server validation using built-in zero air and optional calibration air

Data from the Scentinal Compact Air Quality and odour Monitoring Station system is processed by Scentroid’s chemical and olfactometric correlation system to determine odour impact in terms of odour units at the sensitive receptors. The Compact Air Quality and odour Monitoring Station uses a neural network learning algorithm to determine odour concentration from chemical readings.

Olfactometric measurements, using the Scentroid SM100 Field Olfactometer, are collected periodically (monthly, bi-monthly, or semi-annually) and are inputted into the learning algorithm along with recorded chemical composition. This sophisticated algorithm will then create a non-linear relationship between chemical readings and odour concentration. This data is used to teach the network and enhance the accuracy of odour concentration prediction from chemical composition. The advantage of this Compact Air Quality and odour Monitoring Station over other competing technologies such as E-Noses is that chemical to odour concentration is based on routinely gathered olfactometric data and therefore is always up to date regardless of changes to the plant processes.

Should the space you are monitoring be large, it may require a series of Scentinal SL50 units recording data. Using state of the art IoT (Internet of Things) software, the Scentinal unit can transfer data throughout a network of cooperating units in order to build a comprehensive data map.

Each Compact Air Quality and odour Monitoring Station is enclosed in a NEMA4x cabinet. This standard package allows the station to operate within an ambient air environment of between 4 and 35 degrees Celsius. Optionally each Station can be equipped with the following cooling and heating systems to keep the unit at optimal temperature and humidity:

• Air Conditioning System for temperatures between 35 and 50 degrees C
• Heating System for temperatures between +4 and -50 degrees C
• Combined Air Conditioning and Heating System

The HVAC system has an automated thermostat and smart power management system. The sensor network reports on the temperature and humidity of the cabinet to warn of any HVAC failures. Furthermore, each station has a hardware shut off feature to prevent over temperature failure if the temperature inside the cabinet exceeds 50 degrees C or goes below -50 degrees C due to HVAC failure.

Scentinal Heated sampling line used to minimize condensation and increase sample integrity and meet all EPA guidelines for emissions sampling. This additional feature can be add to your Scentinal per your request. The temperature of the air entering through the sample line is monitored using a thermocouple built into the sample line and can be accurately controlled through the temperature controller inside the cabinet.

The heated sampling line consists of:

3/8” PTFE Tubing core
Aluminum heat transfer casing
Electrical heating wrap
High Temperature Thermal shielding
Aluminum heat shield
Foam insulation
Protective casing
K type Thermo Couple

Electrical connector (compatible with SL50 – Heated Sample Line controller option must be added)

A heated sample inlet for the PM1-10 sensor greatly increases the accuracy of the PM reading by eliminating water droplets and moisture from the sample. This additional feature is available for any Scentinal which has PM sensor. Temperature of the inlet can be user set to match environmental conditions using the temperature controller inside the cabinet. The actual achieved temperature is monitored using a thermocouple built into the stainless steel inner tube. The

Heated Particulate Sample Inlet module consists of:
Stainless steel Inner tube
Electrical heater
Stainless steel outer tube
Stainless steel rain cap
Thermo Couple
Temperature controller (inside cabinet)

Has your city/township/region been displaying a poor Air Quality Index (AQI) for several days in a row? Perhaps it’s time to consider finding out what’s in the air around you. Speak to Scentroid today to figure out the best solution for your space.

24″ x 20″ x 8″ x 81 lbs


Maximum Sensors: 10 (Click here for full sensor list)
Type of Sensors: PID, NDIR, EC, laser particulate counter, MOS

Scentinal Package Includes:

Smart board for data processing and storage
Monitoring software
Temperature and humidity sensors
Min of 3 to a maximum of 10 sensors
NEMA 4x Cabinet
Ozone generator which decontaminates all lines automatically once per day


Sampling Rate: Adjustable from 1/s to 1/m
Sampling Ports: 1 to 2


Power Requirements: 100-240 v 50/60 Hz 2A
Power Consumption: 30w without AC unit. 150w with AC unit.


Communication: 3G / 4G (default) LAN (default) WiFi (optional)
on Board Data Storage: 64gb SD Card
Cloud Server: Included by default
Local Server: Optional
on-Board Server: Included by default
User Interface: 7″ touch screen on panel door and remote access to SIMS (Sensor Information Management System)
Software: Free access to SIMS for life of product


Temperature Range: 0 to 35 °C without AC unit installed
Temperature Range with AC unit:  -50 to 50 °C with heating and AC
Sample Conditions Without Pre-Dilution System: -50 to 50 °C and 10 to 90% RH 
Sample Conditions With Pre-Dilution System: -50 to 120 °C and 0 to 100% RH


Manual Calibration: Using calibration gas and on-board screen
Automatic Calibration: Optional, using built-in calibration gas


Warranty: 24 months full warranty on all parts including sensors
Sensor Replacement: Sensor dependent; first 2 years are covered by warranty


Cabinet: NEMA 4X
Mounting Hardware: Wall mounting hardware Included 

Got any Questions?
Call us Today!

(+603) 7845 4566

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