Kunak air lite webinar q a - Ambient, noise and air quality monitoring systems

Kunak AIR Lite global launch webinar – Questions & Answers

    1. Has the correlation coefficient been improved in the particle sensor? The last information I have was that it was ~0.65 and that’s a bit low… especially compared to the rest of the sensors that have a very good response

      • Kunak has proved that is one of the few manufacturers that can measure accurately PM10, while most of the manufacturers can measure only PM1 and PM2.5 due to the particle sensor they used.

      In the next link, it can be compared the results obtained in AQSPEC from different manufacturers, regarding not only the particle sensor performance but the gas sensors performance: https://www.kunak.es/en/comparative-assessment-aqspec-field-evaluation-reports/

      However, this was a report from 2019, and Kunak makes a lot of effort to obtain the best accuracy in all of their sensors. That’s why during the last months, we made a huge effort into improving our particle sensor performance. That’s why we were awarded last year as the most accurate multipollutant sensor in the AIRLAB International Air Sensor Challenge. Also during the last months, we made a huge effort into improving our particle sensor performance.

      In the next link, you can find the results obtained after applying some improvements to our particle sensor: https://www.kunak.es/doc/External/Kunak_AIR_Pro_PM_field_performance.pdf

      The main conclusions are:

      • The particle sensor accomplishes the requirements for indicative measurements according to the Directive 2008/50/EC, and even in some cases the requirements for equivalence instruments.
      • The effect of the humidity in the particle sensor is perfectly corrected and can be considered negligible, not requiring any kind of dryer or heater in the sensor system.
      • The assessment of the sensor in extremely cold temperatures shows no effect on the measurements, allowing an excellent performance of the particle sensor.
      • The current performance of the PM sensor can be comparable to a Palas Fidas 200 instrument for PM1, PM2.5, PM4, PM10, TSP and TPC, achieving very high correlations R2>0.8 for all parameters and well-expanded uncertainties. 
    2. I saw you have an option to add different probes to the Kunak system. In particular, I’m interested in what parameters can you measure using a noise probe?
      It’s possible to measure Lp, Leq, Ln.

    3. Is the Kunak Lite able to be fully self-powered by the 6 W panel?
      Yes, it is.

    4. Looks like a Davis Vantage Pro cup anemometer was added to AIR Lite in the photo. Does it support 2D/3D sonic anemometers?
      Yes, they support 2D and 3D sonic anemometers. Also, all Kunak Devices have a Modbus RS485 RTU interface so any kind of probe or weather sensor compatible with this protocol can be connected to the devices.

    5. What other pollutants can you monitor aside from PM1, PM2.5, PM10, H2S and NH3?
      Temperature, Humidity, Atmospheric pressure, and Dew point are always measured within the device. Also, it’s possible to monitor CO, CO2, NO, NO2, O3, SO2, VOCs, Anemometer & Rain Gauge, Sound meter…

    6. Please let me know of a power option
      Solar panel or outdoors source with an internal rechargeable battery.

    7. You say low-cost solution, which is the range of prices?
      Please, contact us for a specific quotation.

    8. Are there any regions of the world where the modem won’t work?
      The devices have a global 2G/3G/4G modem that supports some of the bands available in every country so if there is cellular coverage, with local SIM cards you should not have any problem.

    9. How much less does it cost regarding the other Kunak equipment?
      At least 30% less in the station base. Gas cartridges are the same and the PM sensor is much lower in price but also with not have such a good response.

    10. Which met sensor & noise meter can be connected?
      Besides the ones shown in our Smart Environment catalogue, all Kunak Devices have a Modbus RS485 RTU interface so any kind of probe or weather sensor compatible with this protocol can be connected to the devices.

    11. Is the data post-processed in a cloud service?
      We calculate the concentration values directly in the device, without using any external data and without applying any post-processing at the Kunak Cloud. Just, some flagging tags can be recalculated in the cloud to advise the user if some data can be invalid for a malfunction in the sensor.

    12. In the case of PM: Are you using Alphasense or Plantower sensors?
      Plantower/Sensirion sensors for PM in Kunak AIR Lite.

    13. Can it be used standalone as well?
      Yes, with the Modbus RTU Slave version but just for specific applications.

    14. Could you inform the expected delivery time?
      4 weeks is the standard delivery.

    15. According to your market research, what is the geographical area you believe will be most interested in purchasing your devices?
      There are huge opportunities in China and Europe. China due to geographical and population factors and Europe due to smart city and climate change funds.

    16. How many sensors can measure at the same time?
      The Kunak AIR Lite can measure up to 2 gases and the Kunak AIR Pro can measure up to 5 gases. Both devices also monitor PM and environmental parameters at the same time.

    17. For gases, do you use Alphasense sensors or MOS?
      We use electrochemical sensors for CO, NO, NO2, O3, H2S, SO2 and NH3 from different manufacturers, NDIR for CO2 sensors and PID for VOCs sensors.

    18. In the presentation, you show a dashboard, is that an extra-cost option or part of the package?
      The dashboard is part of the basic cloud service package. No extra cost is needed.

    19. Does it measure Odour?
      We don’t do odour units, but we monitor main odour pollutants such as H2S, NH3 and VOCs.

    20. Could you explain how to perform the calibration of the sensors?
      Yes. It is explained in Kunak’s Smart Environment catalogue on page 12 for detailed information.

    21. Do you rent the equipment? Project analysis as an engineering company, as a service…? Or just sell to the final client?
      We do both, selling and renting.

    22. What about the detection limits?
      Detailed info in the catalogue on page 28.

    23. Is the calibration done at Kunak? Have you improved your accuracy?
      The calibration procedure is explained on page 09 of the catalogue. Besides, it is possible to check the technical specification in the laboratory and in the field of each cartridge on page 28 of the catalogue. More information on field tests can be found in the next link: https://www.kunak.es/doc/External/Kunak_AIR_Pro_Co-location_tests.pdf

    24. Can end-users get access to raw data? For example, I might want to perform my own calibration(s) before deployment.
      The concentration values are calculated directly on the device without using any external or reference data. So, it is not possible to have access to mV data. However, by raw data do you mean concentration values that have not been calibrated in the field. It is possible to have access to that data through the Kunak Cloud platform.

    25. When working in odorous mode, which is the equipment? is there a different cartridge?
      At the moment, we are not measuring in odour units, but Kunak provides accurate data for most of the pollutants related to odour, such as H2S, VOCs and NH3.

    26. Is there a specific combination for the sensor in the Lite version?
      You can combine the gas cartridges as you want.

    27. Do you monitor (Sensor) for black carbon?
      Kunak has not the possibility to monitor black carbon. The lowest particle size range that it is possible to measure is 0.3 µm.

    28. Can we rewatch this somewhere later?
      Of course. You can watch it from this link: https://youtu.be/C3l8sW7qLzA

    29. LCS need Co-Location in the environment where they are gonna be deployed…I think you need local reference measurements for your algorithm.
      We don’t need any local reference measurement when deploying the device on the field. We correct the environmental conditions that affect the sensor directly on the cartridges, and individually in each of them. We recommend correcting the baseline of the sensor when it’s deployed in the field, but it could be done remotely without requiring any external reference data.

    30. What is the lifetime of the sensors?
      Between 12 and 36 months depending on the gas cartridge.


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