Topic: Barani MS Pro vs SmartCellino radiation shield comparison

[ypsinine]

Very jealous! That same storm is currently giving me temps of 11-12C, after some snow fell overnight. Enjoy! Maybe a good idea to clean the snow off the shield?

Good point, I gather that this is the same storm that has moved off of the coast of the UK and Benelux before landing here in southern Scandinavia eventually...
The wind will probably both clog the shield more but also clean it out somewhat depending on how strong the winds will be.
Besides, it is kind of futile to attempt doing anything manually while there is both snow and wind simultaneously.

But I will for sure take a look at it after the snowing has stopped sometime on Tuesday. 

[Kallo78]

How I wish I was at ypsinine
Report of yesterday, grey day without sun.
New test with MetPro3 and ds18b20 sensor (VN34D Ecowitt). Data from half day line orange.

[Meteorology fan]

DS18B20 is not a good sensor. Especially in negative temperatures. It crashes by more than 0.5 degrees in negative temperatures. A better one is the SHT-35 and the WN34L. I checked with a calibrated instrument from the PRT series.

[mauro63]

Today's partially data

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M.

[Kallo78]

Yesterday data

[Kallo78]

Today’s day is marked by a couple of sudden changes in circulation. At night when the cold air layer was swept away by hot falling winds and in the afternoon where on the contrary cold air returned. I extrapolated the different reactivity of the systems with obvious but always fascinating results.

[Jasper3012]

The Davis FARS is not spinning most of the time now, due to a lack of sunlight, so the comparison with the SC next to it isn't relevant right now. I suspect that the fan will be on most of the time by March and then I'll be able to post relevant comparisons again. Adding a third sensor is more complicated than I thought, so this likely won't be done for a while to come. By spring and summer, the frequency of the low wind/low sun combination should increase and that should tell us quite a bit about the behaviour of the SC in these conditions. So, while I may not be posting much at the moment, I'm still keeping a watchful eye on all the data being posted on this thread. Keep it going.

[Kallo78]

Today’s day is marked by a couple of sudden changes in circulation. At night when the cold air layer was swept away by hot falling winds and in the afternoon where on the contrary cold air returned. I extrapolated the different reactivity of the systems with obvious but always fascinating results.

Complete report of yesterday

[mauro63]

Yesterday's data, interesting because in the late afternoon we had a temperature collapse of about 7 degrees in a few minutes, you can see the different reactivity of the various systems, the rad with ds18b20 sensor, according to some not very reactive to rapid variations, is actually the fastest followed by the ds18b20 in the traditional Metspec Stevenson screen, followed by the others

also posted a detail of the moment of the descent

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M.

[Kallo78]

Report yesterday. Hot wind surge at the end of the day!

[mauro63]

Yesterday's report

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M.

[Kallo78]

Report yesterday. Several interesting moments even without a great radiation. Much humidity...

[Jasper3012]

Bit of a funny story here… Yesterday evening, I decided to remove the Davis from the testing location and deploy the sensor as a grass sensor, as the fan isn’t spinning 90% of the time anyway and it’s therefore useless. This morning and midday however, I was very annoyed to see that after months of trying, I finally got the low wind/low sun combination… but I had no Davis there to see the result. So I quickly jumped on my bike with the Davis and reinstalled it, only about 18 hours after removing it. The first results after putting it back up and seeing how it compares to the SC are quite interesting… The SC is actually running COOLER than the Davis, despite the very hostile conditions for a passive shield… I will put the link to the data at the end of this post so you can have a look at it yourself, but know that between 19:50 yesterday and 12:20 today, the second sensor was at grass level and not in the Davis. The first reliable data from the Davis came at 12:30 today: https://meteo-be.net/nl/grafieken/male-brugge/last_24h

[Meteorology fan]

Jasper3012 - Wouldn't it be better to put a large car battery what cars use and power the Davis FARS24 with the appropriate battery cables?

[Jasper3012]

Yes but I have no idea how to do that and the engineer I work with is currently busy replacing broken Barani MeteoHelixes all across the country, so he's not available and this won't change for a good few months yet...

[Meteorology fan]

That's how many total of these Barani Meteohelix stations do you have damaged?

[Jasper3012]

I personally only purchased 2 and both of them had (multiple) failures. The first one I got had a failing sensor head after 11 months of usage, then the cables connecting the solar panel to the electronics corroded through and then the second sensor I got also failed recently. The second MeteoHelix had a failing sensor aswell. Both of these stations have been replaced with a station from our own production, the "WeatherWise" station.

Across the country, there are roughly 100 of them and one by one, they pretty much all start to fail. At this point, there are very few (if any) stations that haven't experienced some kind of failure. Hopefully, Barani can fix the issues with their products, as I do like them and their customer service.

[Meteorology fan]

How can you like something that suffers so many failures and has hidden defects?

I myself have experienced the failure rate of their products. Meteoshield Pro III without their sensors, is the least failed product, but Meteohelix and MeteoWind no longer. I'm already leaving aside the problems known to forumers here at low solar angles and overestimation of readings in snow and low wind at any time of the year.

[Jasper3012]

How can you like something that suffers so many failures and has hidden defects?

I myself have experienced the failure rate of their products. Meteoshield Pro III without their sensors, is the least failed product, but Meteohelix and MeteoWind no longer. I'm already leaving aside the problems known to forumers here at low solar angles and overestimation of readings in snow and low wind at any time of the year.

I meant the people behind the company with "them", they've always been very polite with me and offering good customer service in replacing the products with failures.

[mauro63]

How can you like something that suffers so many failures and has hidden defects?

I myself have experienced the failure rate of their products. Meteoshield Pro III without their sensors, is the least failed product, but Meteohelix and MeteoWind no longer. I'm already leaving aside the problems known to forumers here at low solar angles and overestimation of readings in snow and low wind at any time of the year.

I meant the people behind the company with "them", they've always been very polite with me and offering good customer service in replacing the products with failures.

These are the comments I like to read, they admit the problems but highlight the positive aspects of the company's commitment to solving them

M.

[Jasper3012]

How can you like something that suffers so many failures and has hidden defects?

I myself have experienced the failure rate of their products. Meteoshield Pro III without their sensors, is the least failed product, but Meteohelix and MeteoWind no longer. I'm already leaving aside the problems known to forumers here at low solar angles and overestimation of readings in snow and low wind at any time of the year.

I meant the people behind the company with "them", they've always been very polite with me and offering good customer service in replacing the products with failures.

These are the comments I like to read, they admit the problems but highlight the positive aspects of the company's commitment to solving them

M.

To be perfectly honest here, I actually think there's a lack of commitment to solve the problems... At least it seems that way from the outside looking in. The problems with the MeteoHelixes, as mentioned in this thread a number of times, started in 2020/2021 and are still continuing (and in fact getting worse) to this day, in 2025. Barani have been great at replacing products with defects but it would be a lot better to eliminate the root cause of all these defects and take a look at their design, rather than just replacing the broken units over and over again. From what I've seen of conversations between members of our club and Barani, it seems to me that they aren't really recognizing the problems to the fullest extent and are instead putting at least some of the "blame" on things like the humid Belgian climate, which can be very harsh to products with insufficient water tightness. Anwyay, these problems have been discussed a million times on this thread already so I don't think there's much point in restarting this discussion again and like I said, I do really appreciate them as people and their willingness to replace broken devices, but I just wish they would try to eliminate the key issues in their product(s) a little more.

[mauro63]

How can you like something that suffers so many failures and has hidden defects?

I myself have experienced the failure rate of their products. Meteoshield Pro III without their sensors, is the least failed product, but Meteohelix and MeteoWind no longer. I'm already leaving aside the problems known to forumers here at low solar angles and overestimation of readings in snow and low wind at any time of the year.

I meant the people behind the company with "them", they've always been very polite with me and offering good customer service in replacing the products with failures.

These are the comments I like to read, they admit the problems but highlight the positive aspects of the company's commitment to solving them

M.

To be perfectly honest here, I actually think there's a lack of commitment to solve the problems... At least it seems that way from the outside looking in. The problems with the MeteoHelixes, as mentioned in this thread a number of times, started in 2020/2021 and are still continuing (and in fact getting worse) to this day, in 2025. Barani have been great at replacing products with defects but it would be a lot better to eliminate the root cause of all these defects and take a look at their design, rather than just replacing the broken units over and over again. From what I've seen of conversations between members of our club and Barani, it seems to me that they aren't really recognizing the problems to the fullest extent and are instead putting at least some of the "blame" on things like the humid Belgian climate, which can be very harsh to products with insufficient water tightness. Anwyay, these problems have been discussed a million times on this thread already so I don't think there's much point in restarting this discussion again and like I said, I do really appreciate them as people and their willingness to replace broken devices, but I just wish they would try to eliminate the key issues in their product(s) a little more.

Thank you,
the message is very clear, and I am sure that Jan, who I had the pleasure of knowing and appreciating for his seriousness, competence and attention, will already be doing his best to resolve these aspects.

If this were not the case, there would be no problems anyway, the market, always, and in any sector, has been characterized by "meteors" disappeared for various reasons, but I hope this is not the case.

M.

[Kallo78]

Report yesterday. From 10:30 yesterday there is a siap in more with ds18b20 (VN34D)

[mauro63]

Report yesterday. From 10:30 yesterday there is a siap in more with ds18b20 (VN34D)

Very well, it will be interesting to see how this sensor, which is also very cheap, behaves and I must say that, up to now we are having rather encouraging results, already noticed in the initial alignment phases.

my data from yesterday

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M.

[Meteorology fan]

In negative temperatures it is not very accurate and its response time is poor with sht35 and pt1000. Ds18b20 is a bad choice and several classes lower than sht35/45. In negative temperatures we have a pronounced non-linear temperature measurement error. I use Wn34d and wn34l at ground, periodically attaching pt1000 and Wn34d is a bad choice due to poor quality ds18b20 sensor.