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uRADMonitor
KeymasterHello @Baskin, I raised this question with the manufacturer of the Ozone sensor. After passing them all relevant info, I finally receive their input:
As checked with our engineers, it seems that the ambient air does not have too much O3 concentration.
If actual ozone concentration is very small, then ZE25-O3 may have output value for 20ppb or 50ppb.
The value will increase as ozone concentration increases.BTW, you can breathe a breath at the sensor, and check whether ZE25-O3 value will change or not.
Thanks
RaduKeymasterFixed! Thanks
KeymasterThat has been fixed. Please try again
KeymasterI messaged the owner but failed to get a reply so far. I suspect a technical issue, perhaps something related to the geiger tube.
Definitely we need some better communication tools for the community.
Will let you know as soon as I have news.
KeymasterThis is amazing! Would you post a quick article about this on the blog?
KeymasterSend me an email and please include your unit’s details. I will compile it for you and mail back.
KeymasterThe sensor used in the A3 is either the BME680 or the BME280 from Bosch. These are high spec sensors, I would expect very good linearity.
Keymasterhi Guys, it’s really great to have you all here.
@henk1 , don’t be shy and ask if you need any help. Either me or the other guys will be able to help getting things going.
@david94 beautiful installation. I just posted it on the FB page: https://www.facebook.com/uRADMonitor/photos/a.398902893605715/1054542198041778/?type=3&theater
@lumpylumpy your high altitude balloon projects are impressive. It was a real inspiration for me to see your work and achievements. It’s still on my list to have a small weigh PIN photodiode radiation detector, I will let you know when I get the time to build it , maybe you’ll learn it to fly, who knows! Should you have the time it would be awesome to post more on your projects, either here or on a separate thread.Keymaster@sorincheval the data older than 2 months is archived. You can get access to that but there will be a fee. Either as license or fixed amount. Contact me for more details.
@daniele-wyss yes, but what’s the point to that?KeymasterI will look into this (temperature/noise signal correlation) and get back to you.
For the temperature and humidity alignment I replied to your other thread under Support category. Please do not do double posts as it takes a lot of time for me to follow.
Thanks for the interesting report!
Keymaster@luke_bodson , this seems like an interesting project. We have a software section here, that you should check out, and maybe post your idea there so others can help you.
Send me the list of units you are interested in.
Keymaster@samwantman-net , that would be an excellent feature to have. Not easy to implement but I will look on a way to allow users to mark/flag their data.
KeymasterPlease use a Passive POE cable. Many uRADMonitor users are having good results with them.
The A3 units also support a wide voltage input (6V to 28V, but not more than 28.00V!! ), so you can use a higher voltage (eg. 24V) and not care about the length of your cable.
See:
https://www.facebook.com/193197037509636/photos/?tab=album&album_id=398902893605715
or
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=passive+poe+cable&_sacat=0KeymasterAbsolutely and congrats for your sharp eye,
The units are not all tested together at the same time , but they are tested in batches. So there will be some differences related to the time of the day they were tested, and the units selected for a given batch. They are not tested in order.
The VOC doesn’t have a common baseline. You can read more about those sensors here: https://www.uradmonitor.com/smartcity-debate-iasi-2018/ . This is why we have the AQI VOC algorithm (similar to the Bosch BSEC library) that uses history data to compute a common baseline and provide comparable signals of identical amplitudes based on similar trend raw data. The auto test tool for this will only check that the value is in technically correct interval. The AQI VOC algorithm aligns the data between the various units or sensors (eg. BME680 vs MP503)
The CO2 sensor has an internal auto-calibration mechanism that triggers every 24hours and detects the lowest value to see if it gets close to the ambiental outdoor value of 400ppm. If this is the case, it will adjust an internal offset.
All in one these are the things you see between the various units in the report page.
Let me know if you need any additional details, and thanks for an excellent question.
October 3, 2018 at 9:15 pm in reply to: DIY KIT1 assembly roundup/lessons: transistors swapped, high-resistance inductor #6087Keymaster -
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