enLink Optical Oxygen Sensor

Sensor Features and Benefits

  • Optical sensing instead of electrochemical
  • Non-depleting technology
  • Greater than 5 Year Lifetime
  • Maintenance free
  • High accuracy, factory Calibrated
  • Temperature and pressure compensated
  • Contains no hazardous materials (RoHS & REACH compliant)

enLink Optical LED Non Dispersive Infrared (NDIR) CO2 Sensor:

  • High accuracy, factory calibrated
  • Optical sensing instead of electrochemical
  • LED light source for ultra-low power and reliability
  • Non-depleting technology
  • Greater than 15 Year Lifetime
  • Maintenance free – automatic recalibration
  • Temperature and pressure compensated
  • Ultra-low power for battery operation
  • Contains no hazardous materials (RoHS & REACH compliant)
  • Complies with ASHRAE standard 189.1 Standard for the Design of High-Performance Green Buildings. (±50ppm @ 1000ppm of measured CO2 value)

The Synetica NDIR CO2 Sensor uses state of the art LED based mid infra-red sensor rather than conventional incandescent (filament) sensors with outstanding benefits:

  • Ultra low power – for long life battery powered applications.
  • High speed start-up – just 800 milliseconds is required to obtain the first reading, saves power to extend battery life.
  • Auto background calibration – no further calibration required for the life of the product.
Parameter enLink LED NDIR CO2 Sensor Typical NDIR Sensor
Power consumption 3mW 50 to 200mW
Start up time 800mS (to first reading) >10 minutes
Longevity >15 years Limited lifespan
Spectral drift Zero Reference gas recalibration required
Robustness Performs in high vibration conditions Reduced lifespan & reliability. Prone to microphony.

enLink Optical PM2.5 & PM10 Particulate Matter Sensor

Engineered for accuracy, the Particulate Matter sensor employs a laser-based sensing approach that detects airborne particles with incredible accuracy.

Laser PM Sensor

  • High accuracy, factory Calibrated
  • Optical sensing – using laser technology. Typical PM sensors use low accuracy LED sensors
  • Non-depleting technology
  • Greater than 5 Year Lifetime
  • Maintenance free
  • EMC: Heavy industrial level IEC61000
  • Contains no hazardous materials (RoHS & REACH compliant)
The fan at the outlet draws the air in through the air inlet.
The air sample passes through the laser beam where the light reflected off the particles is captured and analyzed.
The photoelectric converter processes the signal into particle size and density.
The signal is transmitted to the micro control unit ( MCU ) where a proprietary algorithm processes the data and supplies outputs for the density of the particulate.

PM2.5 and PM10 Comparison with Human Hair

How small is 2.5 micrometers? The average human hair is about 70 micrometres in diameter – making it 30 times larger than the largest fine particle.

PM10 : inhalable particles, with diameters that are generally 10 micrometres and smaller; and

PM2.5 : fine inhalable particles, with diameters that are generally 2.5 micrometres and smaller.

What are the Harmful Effects of Particulate matter?

Particulate matter (PM) contains microscopic solids or liquid droplets that are so small that they can be inhaled and cause serious health problems. Particles less than 10 micrometres in diameter pose the greatest problems, because they can get deep into your lungs, and some may even get into your bloodstream causing long term illness.

Particulate matter (PM) is a common proxy indicator for air pollution. It affects more people than any other pollutant. The major components of PM are sulphate, nitrates, ammonia, sodium chloride, black carbon, mineral dust and water. It consists of a complex mixture of solid and liquid particles of organic and inorganic substances suspended in the air.

While particles with a diameter of 10 microns or less, (≤ PM10) can penetrate and lodge deep inside the lungs, the even more health-damaging particles are those with a diameter of 2.5 microns or less, (≤ PM2.5). PM2.5 can penetrate the lung barrier and enter the blood system. Chronic exposure to particles contributes to the risk of developing cardiovascular and respiratory diseases, as well as of lung cancer.

Health effects
There is a close, quantitative relationship between exposure to high concentrations of small particulates (PM10 and PM2.5) and increased mortality or morbidity, both daily and over time. Conversely, when concentrations of small and fine particulates are reduced, related mortality will also go down – presuming other factors remain the same. This allows policymakers to project the population health improvements that could be expected if particulate air pollution is reduced.

Small particulate pollution have health impacts even at very low concentrations – no threshold has been identified below which no damage to health is observed. Therefore, the World Health Organisation (WHO 2005) guideline limits aimed to achieve the lowest concentrations of PM possible.

enLink Volatile Organic Compounds (VOC) Sensor

Features and Benefits

  • High accuracy, factory calibrated.
  • Compliant to the ISO16000-29 standard “Test methods for VOC detectors”.
  • Detects: paints (such as formaldehyde), lacquers, paint strippers, cleaning supplies, furnishings, office equipment, glues, adhesives and alcohol.
  • Maintenance free > 5 Year life expectancy
  • Metal Oxide Adsorption
  • Non depleting MOS technology
  • Contains no hazardous materials (RoHS & REACH compliant)

Indoor air quality (IAQ) classification and colour coding 1

1 According to the guidelines issued by the German Federal Environmental Agency, exceeding 25 mg/m3 of total VOC leads to headaches and further neurotoxic impact on health.

2Software auto-calibrates the low and high concentrations applied during testing to IAQ of 25 and 250, respectively

Air Quality AQI Index Meaning
Good 0 – 50 Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate 51 – 100 Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for Sensitive Groups 101 – 150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151 – 200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201 – 300 Health alert: everyone may experience more serious health effects.
Hazardous 301 – 500 Health warnings of emergency conditions. The entire population is more likely to be affected.