Author Topic: Barani MS Pro vs SmartCellino radiation shield comparison  (Read 81089 times)

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Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #350 on: October 29, 2024, 05:43:41 PM »
Another possible explanation for the MS Pro drying up more quickly during low angle sun in the morning (and therefore warming faster) is simply an insufficient protection from solar radiation, heating and drying the sensor chamber more significantly than other shields and therefore seeing faster warming. That would in fact be a negative for the MS Pro, whereas the theory about better airfow would obviously be a positive. Very difficult to judge.

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #351 on: October 29, 2024, 05:47:51 PM »
I'm pretty sure the theory about better airflow causing faster warming is incorrect though. The Davis FARS obviously had better airflow into the sensor chamber than the Barani during light winds in the morning and yet it would often rise more slowly than the Barani, which is the total opposite of what this theory would suggest. Barani themselves have also admitted in the past that the MS Pro (especially the gen 2) still allowed a bit too much sunlight into the sensor chamber during low angle sun. I suspect it might be this solar radiation that can, under certain circumstances, cause significant errors in the MS Pro.
« Last Edit: October 29, 2024, 05:50:44 PM by Jasper3012 »

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #352 on: October 29, 2024, 05:55:42 PM »
Another possible explanation for the MS Pro drying up more quickly during low angle sun in the morning (and therefore warming faster) is simply an insufficient protection from solar radiation, heating and drying the sensor chamber more significantly than other shields and therefore seeing faster warming. That would in fact be a negative for the MS Pro, whereas the theory about better airfow would obviously be a positive. Very difficult to judge.

The last part of your message contains the great truth of this fascinating subject.
From whatever angle we observe these differences, we can only hypothesize the reasons, the lack of knowledge of the real measurand  imposes humility and respect.

It is true that there are many reported episodes that suggest a problem with the Barani in the management of low-angle lateral sun radiation, and low angle does not mean low intensity, this aspect is real and there are many reports on the matter that would suggest it is real

The discussion regarding overcooling is much, much more difficult, here we are no longer talking about management of incident or reflected radiation, and it becomes extremely difficult to make an assessment with the modest means at our disposal.

Certainly, the Barani is, fundamentally, an "open" screen, this puts it in a position to make the most of natural ventilation, if present, but it also puts it in difficulty in other conditions

M.

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #353 on: October 30, 2024, 03:50:44 AM »
Yesterday data

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M.

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #354 on: October 30, 2024, 05:12:59 AM »
I would like to know if it could be interesting to add to my data also those that I detect in the Stevenson screen by Metspec

I'll post an example from yesterday, if you think it could be annoying to read I'll remove it from the next reports

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M.

Offline Kallo78

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #355 on: October 30, 2024, 04:20:29 PM »
My report of yesterday

Offline Kallo78

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #356 on: October 31, 2024, 05:43:27 AM »
My report of yesterday

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #357 on: October 31, 2024, 10:29:26 AM »
Mine, yesterday

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M.

Offline Dvalente75

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #358 on: October 31, 2024, 10:40:22 AM »
My report yesterday

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #359 on: October 31, 2024, 12:48:56 PM »
I'm considering swapping out the Barani MS Pro with the Davis FARS. There are a lot of excellent tests already running here with the Barani vs SC and I seem to be finding pretty much the exact same thing, so I'm not sure I have much added value with my comparison. Davis FARS vs SmartCellino would be a comparison no one is currently doing, as far as I'm aware. Of course, in the ideal scenario, I have 3 temp sensors and I can put all 3 shields to the test at the same time but I don't have that yet. I'm hoping to get a third sensor before the end of the year.

Offline Meteorology fan

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #360 on: October 31, 2024, 01:50:19 PM »
A good idea, but it's worth thinking about a steady supply of Davis FARS24H. I am starting in the days to compare Davis FARS 24, Apogee TS100, Barani Meteoshield Pro III and plan to redesign the whole mast.
Ecowitt WS90 1.3.8, WS80 1.2.5, Ecowitt WS68, Ecowitt WH31EP/WH32EP, WH40, WH57, WN34L, WH51, WN34D, HP2560_C, HP2550_C, GW1100, GW2000. Davis Vantage Pro 2, Davis Vue, Davis 6313, Hongyuv WDS2E

PT1000 4-wire - Termio 2 (3x)

Barani Meteoshield Pro II, III, Davis FARS 24H, Apogee TS100

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #361 on: October 31, 2024, 01:51:06 PM »
I'm considering swapping out the Barani MS Pro with the Davis FARS. There are a lot of excellent tests already running here with the Barani vs SC and I seem to be finding pretty much the exact same thing, so I'm not sure I have much added value with my comparison. Davis FARS vs SmartCellino would be a comparison no one is currently doing, as far as I'm aware. Of course, in the ideal scenario, I have 3 temp sensors and I can put all 3 shields to the test at the same time but I don't have that yet. I'm hoping to get a third sensor before the end of the year.

I can only agree, certainly the 3-sensor solution would allow the Pro to be kept in the tests, but I understand that it involves a greater commitment, both in terms of work and economic and the choice can only be personal.

Thanks
M.

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #362 on: October 31, 2024, 04:19:29 PM »
I'm considering swapping out the Barani MS Pro with the Davis FARS. There are a lot of excellent tests already running here with the Barani vs SC and I seem to be finding pretty much the exact same thing, so I'm not sure I have much added value with my comparison. Davis FARS vs SmartCellino would be a comparison no one is currently doing, as far as I'm aware. Of course, in the ideal scenario, I have 3 temp sensors and I can put all 3 shields to the test at the same time but I don't have that yet. I'm hoping to get a third sensor before the end of the year.

I can only agree, certainly the 3-sensor solution would allow the Pro to be kept in the tests, but I understand that it involves a greater commitment, both in terms of work and economic and the choice can only be personal.

Thanks
M.

The cost for it isn't the issue, it's just that the person that can equip me with the sensor isn't really available at the moment.

Offline hmderek

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #363 on: October 31, 2024, 04:25:36 PM »
I'm considering swapping out the Barani MS Pro with the Davis FARS. There are a lot of excellent tests already running here with the Barani vs SC and I seem to be finding pretty much the exact same thing, so I'm not sure I have much added value with my comparison. Davis FARS vs SmartCellino would be a comparison no one is currently doing, as far as I'm aware. Of course, in the ideal scenario, I have 3 temp sensors and I can put all 3 shields to the test at the same time but I don't have that yet. I'm hoping to get a third sensor before the end of the year.

Tbh I'd love to hear from your experiences in comparing the Barani and SC during the coming winter months. Rather that than going for a passive vs active comparison, which really isn't a comparison that will yield a result other than "they behave very differently" is my guess. Having the 3 next to other would be ideal.
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Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #364 on: October 31, 2024, 04:36:10 PM »
I'm considering swapping out the Barani MS Pro with the Davis FARS. There are a lot of excellent tests already running here with the Barani vs SC and I seem to be finding pretty much the exact same thing, so I'm not sure I have much added value with my comparison. Davis FARS vs SmartCellino would be a comparison no one is currently doing, as far as I'm aware. Of course, in the ideal scenario, I have 3 temp sensors and I can put all 3 shields to the test at the same time but I don't have that yet. I'm hoping to get a third sensor before the end of the year.

Tbh I'd love to hear from your experiences in comparing the Barani and SC during the coming winter months. Rather that than going for a passive vs active comparison, which really isn't a comparison that will yield a result other than "they behave very differently" is my guess. Having the 3 next to other would be ideal.

I agree and, above all, it would be very interesting to make a comparison in conditions of high albedo, unfortunately, in Italy, we cannot do it, I hope that other users can evaluate this very important aspect

M.

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #365 on: October 31, 2024, 07:00:38 PM »
I'll probably keep the Barani vs the SC then and only put the Davis there when I get the third sensor. Chances are that the Davis is going to start spinning down over the next few weeks anyway, as darkness is still increasing and its battery likely won't get charged enough.

Offline Kallo78

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #366 on: November 01, 2024, 03:28:01 AM »
Report of Yesterday
« Last Edit: November 01, 2024, 04:42:29 AM by Kallo78 »

Offline mauro63

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #367 on: November 01, 2024, 04:29:08 AM »
Mine yesterday data


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M.

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #368 on: November 01, 2024, 09:17:34 AM »
Going to start posting daily graphs aswell. A graph of the actual temp (green = Barani, brown = SC) and the difference between the shields (Barani minus SC, so red = Barani warmer).

Yesterday:

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Offline Meteorology fan

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #369 on: November 01, 2024, 10:49:44 AM »
Jasper3012 - it's worth making an additional supply if possible for Davis FARS24H. It's a few minutes work and it will allow you to power the aspiration shield in winter without any problems.
Ecowitt WS90 1.3.8, WS80 1.2.5, Ecowitt WS68, Ecowitt WH31EP/WH32EP, WH40, WH57, WN34L, WH51, WN34D, HP2560_C, HP2550_C, GW1100, GW2000. Davis Vantage Pro 2, Davis Vue, Davis 6313, Hongyuv WDS2E

PT1000 4-wire - Termio 2 (3x)

Barani Meteoshield Pro II, III, Davis FARS 24H, Apogee TS100

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #370 on: November 01, 2024, 11:22:36 AM »
Jasper3012 - it's worth making an additional supply if possible for Davis FARS24H. It's a few minutes work and it will allow you to power the aspiration shield in winter without any problems.

It’s not that simple there as it’s in a field hundreds of metres away from the nearest houses. I’d have to get a large battery and solar panel.

Offline Meteorology fan

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #371 on: November 01, 2024, 11:29:41 AM »
The option with a large battery is a good one and plugging it into the one place in the cowl where we have space for the batteries. Below are the instructions for the Davis FARS24H, which is what I did at my place and the fan doesn't turn off when there is no power from the batteries.
Ecowitt WS90 1.3.8, WS80 1.2.5, Ecowitt WS68, Ecowitt WH31EP/WH32EP, WH40, WH57, WN34L, WH51, WN34D, HP2560_C, HP2550_C, GW1100, GW2000. Davis Vantage Pro 2, Davis Vue, Davis 6313, Hongyuv WDS2E

PT1000 4-wire - Termio 2 (3x)

Barani Meteoshield Pro II, III, Davis FARS 24H, Apogee TS100

Offline Jasper3012

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #372 on: November 01, 2024, 11:40:44 AM »
The option with a large battery is a good one and plugging it into the one place in the cowl where we have space for the batteries. Below are the instructions for the Davis FARS24H, which is what I did at my place and the fan doesn't turn off when there is no power from the batteries.

I’ll probably take care of this next year, in time for next autumn/winter. For now, I’m hoping to get the third sensor and just install the Davis as it is right now, it’ll probably die off at times during the next 5 months but so be it.

Offline Kallo78

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #373 on: November 02, 2024, 04:03:23 AM »
Since 2:20 pm yesterday in my installation site both sensors (wh31ep) in the MetPro3 (modified version) and in the Siap are without filter.
The main objective is to confirm or not the possible defect of the Pro with low sun.
This morning I can say that the problem was not the Siap with filter that remained wet for a long time but most likely it was the Pro to get more radiation into the sensor chamber.
« Last Edit: November 02, 2024, 04:14:19 AM by Kallo78 »

Offline Meteorology fan

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Re: Barani MS Pro vs SmartCellino radiation shield comparison
« Reply #374 on: November 02, 2024, 04:46:31 AM »
When did this modification for the Meteoshield Pro 3 come out?
Ecowitt WS90 1.3.8, WS80 1.2.5, Ecowitt WS68, Ecowitt WH31EP/WH32EP, WH40, WH57, WN34L, WH51, WN34D, HP2560_C, HP2550_C, GW1100, GW2000. Davis Vantage Pro 2, Davis Vue, Davis 6313, Hongyuv WDS2E

PT1000 4-wire - Termio 2 (3x)

Barani Meteoshield Pro II, III, Davis FARS 24H, Apogee TS100

 

anything