Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions
The Science
There is overwhelming evidence that COVID-19 is airborne.
In a recent study ” Mechanisms of airborne transmission ” concluded :
- Traditionally, it was thought that respiratory pathogens spread between people through large droplets produced in coughs and through contact with contaminated surfaces (fomites).
- However, several respiratory pathogens are known to spread through small respiratory aerosols, which can float and travel in air flows, infecting people who inhale them at short and long distances from the infected person.
- Wang et al. review recent advances in understanding airborne transmission gained from studying the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections and other respiratory pathogens.
- The authors suggest that airborne transmission may be the dominant form of transmission for several respiratory pathogens, including SARS-CoV-2, and that further understanding of the mechanisms underlying infection from the airborne route will better inform mitigation measures.
CO2 acts as proxy for the accumulation of exhalation of human respiratory aerosols.
- In a recent study the research team concluded the following:
CO2 is co-exhaled with aerosols containing SARS-CoV-2 by COVID-19-infected people and can be used as a proxy of SARS-CoV-2 concentrations indoors. - Indoor CO2 measurements by low-cost sensors hold promise for mass monitoring of indoor aerosol transmission risk for COVID-19 and other respiratory diseases.
- We derive analytical expressions of CO2-based risk proxies and apply them to various typical indoor environments.
⚠️The relative infection risk in a given environment scales with excess CO2 level, and thus, keeping CO2 as low as feasible in a space allows optimization of the protection provided by ventilation.
Accounting for the absence of other authors (ie stoves , heaters etc). We can reasonably conclude that there is insufficient ventilation and that you are at risk of a higher rebreathe rate. ie at 800pm you are breathing in 1% of the air, that has come out of the mouth of another person.
Aranet4 comes with a traffic light system and alert feature; time to open some windows to allow more fresh in, to replace the stale air.
Qualification:
- in cases where there is filtration , higher levels of Co2 may be tolerated
No, however, it does mean you have sufficient ventilation in that space to reduce the risk of potential exposure. In no way or shape, is the improvement of ventilation a silver bullet; it’s a complimentary layer that works with masks, social distancing , CO2 monitoring and filtration. Implemented in unison, they can significantly reduce the risk of exposure.
James Reason, a professor of psychology at the University of Manchester in the UK used the idea of the swiss cheese model.
The concept; layers of mitigation, are less effective individually and more efficient when used in unison.
The idea behind the systems approach is to build in layers of barriers and safeguards.
To combat Covid 19, we ought to apply all of the following mitigations;
- Testing protocols
- Masking
- Physical Distancing
- Hand hygiene
- Ventilation with the support of CO2 monitoring data
- Filtration and
- Vaccinations
Product Details
- Aranet Products
- Smartair Filters – air purifier products
Smartair Filters
air purifier products are the end result of ;
- French design and
- British Engineering
- CO2 (carbon dioxide) levels
- Temperature
- Relative humidity and
- Atmospheric pressure
Aranet4 uses non-dispersive infrared (NDIR) sensor for measuring the CO2 level.
The device has a small gas chamber with infrared light source in which CO2 absorbs the light. An optical filter in front of a detector then filters all of the light except the wavelength that the CO2 molecules can absorb so a precise measurement of the CO2 level can be made.
This type of CO2 reading provides a higher precision than regular electrochemical sensors because carbon dioxide is uniquely detectable with no interference from other gasses. Additionally, the lifespan of the NDIR sensor is much longer because there is no deterioration or “burnout” of the sensor itself, and less recalibration is needed.
In New Zealand , a scientist managing the rollout of CO2 monitors in schools warned, “What we want to avoid is really sort of rogue, poor quality instruments being brought into schools that are giving inaccurate data and leading to poor decision making.
The Aranet4 app for iPhone is available on the App Store.
The Aranet4 app for Android is available on Google Play.
- 15% brain cognitive function decline
- 1 % rebreathe occurs at 800pm
- 50% brain cognitive function decline
- 3 % rebreathe occurs at 1400pm
Note: Guidelines may be varied depending on industry. A gym , for example, requires more air exchanges and other mitigation layers to reduce risk.
Technical
Once you have removed the device from the box, use the getting started guide to turn on the device.
Thereafter you can pair your mobile phone to the device using the downloadable Aranet4 app.
You can watch the video here.
Measurement interval (min) – Battery lifespan
10min – 3.9 years
5min – 2.4 years
2min – 1.1 years
1min – 0.6 years
Unlimited number of Aranet4 devices can be paired to a single smart device – for example if you want to have an Aranet4 air quality sensor in multiple rooms in your home.
A key difference is that the Aranet4 PRO readings , when paired with the PRO base station , can be accessed remotely via the cloud.
Both versions of the device work via bluetooth and can connect to the Aranet4 app.
More information can be found here
Aranet4 is manufactured in the EU and is considered best in class ,
- with its NCID sensor which facilitate , consistent and reliability of readings
- offers both manual and automatic calibration
- the device mobile and does not require a cable at all
- battery life can last up to 4 years depending on usage
Aranet4 is not waterproof and should not be used in environments with high humidity (higher than 85%). Using a waterproof box is also not recommended as it could delay measurements and results in incorrect data.
🚨 The standard Aranet4 warranty doesn’t cover accidental damage such as dropping the device.
Excluding the batteries , the NDIR sensor , can last up to 15 years.
The battery life of two AA batteries that the device uses is up to 3.9 years at 20°C / 68°F.
The batteries can last up to 3.9 years only if Aranet4 is used as a stand-alone device without Bluetooth Low Energy (BLE) connection to phone application and data measurement refresh interval of the device is set to 10 minutes.
🚨 For reference: The average lifespan of all apple products on the market between 2013 and today is 4 years 3 months – Asymco Research
The amount of the stored historic measurement data depends on the measurement interval of the device:
Measurement interval, minutes – Data availability (days)
2, 5, 10 minutes – 7 days
1 minutes – 3.5 days
Once you reach the max availability days, The data that is older than the possible storage period:
– will be automatically overwritten in the device memory with the new measured data.
Tip: Plan a weekly download schedule depending on the data availability expiry date.
Medical Industry
- Dentist Rooms
- GP waiting Rooms
- Treatment Rooms
- Physiotherapy Rooms
- Communal spaces
- Bathrooms
- Hospital Wards
Education - Day Care Centres
- School classrooms
- School staff offices
- School change rooms
- School reception areas
- School common room
- School music rooms
- School drama / theatre spaces
- School indoor venues
- University lecture theatres
- University residences
- University staff offices
- University IT Labs
- University retail spaces
- University libraries
- University other communal areas
Business - Offices
- Meeting Rooms
- Hospitality
- Retail Spaces
- Customer facing industry (banks)
- Public Transport
- App based transport providers
- Hospitality
- Call Centre
- Corporate Cafeteria
- In person service centres (home affairs , licencing department and / other service centres)
Personal - Personal vehicle and . or ride sharing
- Your home (particularly your kitchen when cooking, when using gas heaters, your bedrooms and communal spaces)eg; Aranet4 will show increased CO2 values when food is cooked on a gas stove because carbon dioxide forms in the burning process of natural gas.
Solution: Use the kitchen hood and crack open a window along with the kitchen door. Observe as the CO2 levels decline and once, in the green, you have confirmation of fresh air in your kitchen, which replaces the gas.
Benefits: Healthier indoor air and reduced health risks.
Government
Legal
The warranty period of Aranet4 is 2 years.
In order to repair the device, please fill in the RMA form .
SmartfiltersWhere local Smart Air partners and distributors exist, Smart Air provides the following warranties:
Product / Part – What is covered ?
Manufacturer defects
As filters are consumable items, we only offer a 30 day warranty. After this, we’re unable to tell if issues that arise are caused by manufacturer defects or due to their usage environment.
we will automatically replace your item with the most comparable item currently manufactured.
If nothing is available, we will notify you to discuss the next steps.
🚨 Putting the batteries in the Aranet4 device battery compartment in reverse (opposite + / -polarization) will instantly and permanently damage the device hardware.
If you happen to take your Aranet4 outside to measure the air quality or do a calibration of the sensor, please note:
🚨 the device is not waterproof,
🚨 nor should it be placed in direct sunlight
🚨 the operating temperature of the sensor is 0°C to 50°C (32°F to 122°F).
Hence, it is not recommended to take Aranet4 outside in the wintertime when it’s freezing because it can permanently damage the sensor.
- A purchase order will be required in order for us to raise an invoice.
- Thereafter a 50% deposit is required to activate the product ordering process.
- Final payment is due 48 hours before delivery date.
Delivery will be actioned including a track code, once final payment has reflected in our account.
Other enquiries?
In the event you have any questions, please feel free to contact us.
In the event you have any questions, please contact us.
