Topic: WittBoy = GW2001 (station) = WS90 + GW2000 on Kickstarter & Beta test

[Gyvate]

I think this table could be added to the 'must read post' ( for example you could add a column to par.9 table )

done - it became a new, more verbose table 

[giusCB]

rain event with 20.2mm-h RR
witt 1.6 (stock gain settings)
vp2 1.2
man. 1

rain expected in next coming days, i'll try new gain setting ...

yesterday's tot. rain (RR max 28mm-h)

witt 17.4mm (gain at 0.9, 0.85, 0.8, 0.75, 0.7)
vp2 14.0mm
man 15mm

i'll try with lower "gain" setting

[giusCB]

This is how the radiation shield perform after someone decided to turn off the algorithm of radiation compensation
 [ You are not allowed to view attachments ]
 [ You are not allowed to view attachments ]
And this is a comparison with a vp2 who has one of the worst shield, i can imagine with a professional one like Barani ... 

[giusCB]

rain event today (RR max 13mm-h)

witt 1.0mm (gain 0,7-0,7-0,65-0,6-0,6)
VP2 1.2mm
Man 1mm

[giusCB]

rain event today (RR max 13mm-h)

witt 1.0mm (gain 0,7-0,7-0,65-0,6-0,6)
VP2 1.2mm
Man 1mm

another event (max 2mm-h)
witt 2.6mm (gain 0,7-0,7-0,65-0,6-0,6)
VP2 1.6
Man 1.5

this rain gauge is impossible to understand... 

[mauro63]

This is how the radiation shield perform after someone decided to turn off the algorithm of radiation compensation
 [ You are not allowed to view attachments ]
 [ You are not allowed to view attachments ]
And this is a comparison with a vp2 who has one of the worst shield, i can imagine with a professional one like Barani ... 

The decision to eliminate from the firmware the temperature correction based not on solar radiation but on the calculation of the energy balance was taken after careful considerations and its basis of disappointing results by an algorithm which, due to the complexity of the data to be processed, has not shown to perform the task adequately.

It was therefore decided, and I admit that I am the author, to remove this function, whoever wants an approximate datum keeps the station as it is, and whoever wants an accurate datum will install a wh32 inserted in a quality solar radiation shield, this for the moment.

EDIT
I forgot to add that we are working on alternative solutions that allow us to improve and reduce radiative errors, keeping the data clean and free from software corrections.

M.

[tweatherman]

rain event today (RR max 13mm-h)

witt 1.0mm (gain 0,7-0,7-0,65-0,6-0,6)
VP2 1.2mm
Man 1mm

another event (max 2mm-h)
witt 2.6mm (gain 0,7-0,7-0,65-0,6-0,6)
VP2 1.6
Man 1.5

this rain gauge is impossible to understand... 

I thought the latest firmware for WS90 took care of rain and wind gust issues? I never heard back on the temperature after the radiation adjustment.

tweatherman

[tweatherman]

This is how the radiation shield perform after someone decided to turn off the algorithm of radiation compensation
 [ You are not allowed to view attachments ]
 [ You are not allowed to view attachments ]
And this is a comparison with a vp2 who has one of the worst shield, i can imagine with a professional one like Barani ... 

The decision to eliminate from the firmware the temperature correction based not on solar radiation but on the calculation of the energy balance was taken after careful considerations and its basis of disappointing results by an algorithm which, due to the complexity of the data to be processed, has not shown to perform the task adequately.

It was therefore decided, and I admit that I am the author, to remove this function, whoever wants an approximate datum keeps the station as it is, and whoever wants an accurate datum will install a wh32 inserted in a quality solar radiation shield, this for the moment.

EDIT
I forgot to add that we are working on alternative solutions that allow us to improve and reduce radiative errors, keeping the data clean and free from software corrections.

M.

I’m very pleased with my raw temperature data running v1.0.9 on WS90. The other data fields like rain and wind gusts are little to be discredited.

tweatherman

[Aircub]

How can I tell what firmware my Wittboy is on.
I can only find GW2000A_V2.1.4

[olicat]

Hi!

How can I tell what firmware my Wittboy is on.

The existing firmware version can be checked via EAR (provided the GW2000 firmware is v2.1.4). An update is then suggested there if necessary.

Oliver

[wsNoordbergum]

I have version ws90_ver 117
Temperature is pretty much inline with my Davis maybe a bit lower
Wind is slightly higher readings especially gusts but hey no cups on the WS90
Humidity differs 6%
Rain gain is to be determined, not much rain lately
Today 1 mm on Davis and 1.7 on WS90 with no gain set
Rate was 9.6 mm/h I set gain now to 0.7 for the rain rate below 10mm/h
Below 4 mm/h I set it to 0.8
Rain rate on my Davis was 30.6 mm/h maximum
So the rain rate maximum on the WS90 was much lower!
Now wait until next rain event
WS 90 installed on a temporary location, after I'm satisfied with the performance it will be on a permanent location

I also compare data of my Davis with the Ecowitt with my meteobridge Nano SD it is easy to define graphs and display them

[tweatherman]

I have version ws90_ver 117
Temperature is pretty much inline with my Davis maybe a bit lower
Wind is slightly higher readings especially gusts but hey no cups on the WS90
Humidity differs 6%
Rain gain is to be determined, not much rain lately
Today 1 mm on Davis and 1.7 on WS90 with no gain set
Rate was 9.6 mm/h I set gain now to 0.7 for the rain rate below 10mm/h
Below 4 mm/h I set it to 0.8
Rain rate on my Davis was 30.6 mm/h maximum
So the rain rate maximum on the WS90 was much lower!
Now wait until next rain event
WS 90 installed on a temporary location, after I'm satisfied with the performance it will be on a permanent location

I also compare data of my Davis with the Ecowitt with my meteobridge Nano SD it is easy to define graphs and display them

Humidity lower than the Davis?

tweatherman

[lantana]

>>> witt 1.0mm (gain 0,7-0,7-0,65-0,6-0,6)

I can understand a gain like 1.0 or 0.7, but what does 7-0 or 65-0 mean?

Thanks.

[Gyvate]

>>> witt 1.0mm (gain 0,7-0,7-0,65-0,6-0,6)

I can understand a gain like 1.0 or 0.7, but what does 7-0 or 65-0 mean?

Thanks.

you have to understand that the poster lives in Europe where (beyond Malta, UK, and Ireland) the decimal point is comma 
what he meant to say is (out of the 5 different gain settings):
gain 1: 0.7
gain  2: 0.7
gain 3: 0.65
gain 4: 0.6
gain 5: 0.6
or short 0.7 - 0.7 - 0.65 - 0.6 - 0.6 (replacing the comma by a point  )

[wsNoordbergum]

Humidity lower than the Davis?

Yes , but changed it now back to 0 because the difference has decreased
My Davis is now at 65% and Ecowitt 70 with the calibration of +6%
See if it is accurate now

[Gyvate]

by the way - the power supply cable of the WS90 can be put inside the pole (provided you use a hollow one).
E.g. in order to protect against solar radiation.
Don't forget the cap nut (on the picture it is still inside the pole) 
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 [ You are not allowed to view attachments ]

[waiukuweather]

does that snow melt heater increase the outdoor temperature reading in the station itself when in use?

[Gyvate]

couldn't test it yet with the WS90 - the WS80 creates some ups and downs - there is a thread about this https://www.wxforum.net/index.php?topic=40977.50
- and with the WS90 the power supply is for the whole outdoor sensor, not only for the heater. For the WS80 it is heater for the ultrasonic element only

[giusCB]

last event RR Max 79mm-h

man 7.5mm
witt  7.4mm
vp2  7.8mm

all gain set to 0.55
please, try this settings and let us know if it work (valid for kickstarter units only) 

[wsNoordbergum]

Yesterday some rain, 4mm on the Davis
Had the gain set to 0.6 (all) and rainrate was approximately 4mm/h
Ended up with 3.2 on the ecowitt
Now set gains to 0.68 see what this does

[giusCB]

Yesterday some rain, 4mm on the Davis
Had the gain set to 0.6 (all) and rainrate was approximately 4mm/h
Ended up with 3.2 on the ecowitt
Now set gains to 0.68 see what this does

the station are side by side ? Do you have a manual rain gauge as reference ?

[wsNoordbergum]

Approximately 1m apart I do not have a manual rain gauge
Davis rain gauge is version with single spoon

[giusCB]

without a manual as reference is impossible to understand which one is correct or not

[tweatherman]

last event RR Max 79mm-h

man 7.5mm
witt  7.4mm
vp2  7.8mm

all gain set to 0.55
please, try this settings and let us know if it work (valid for kickstarter units only) 

What firmware version on WS90 with the offsets?

Thanks,
tweatherman

[wsNoordbergum]

without a manual as reference is impossible to understand which one is correct or not

Manual rain gauge is coming soon to be sure