Just wonder if anyone have installed/tested thees plug and play Ultrasonic Anemometers for Davis VP2 ?
https://www.darrera.com/en/detalle-producto.php?d=1&id=229
It is especially designed to directly replace the Davis VP2 standard wind cups anemometer 0-60 m/s, without needing to use any other component or transmitter apart from a power supply.
connects directly to the wind sensor input on Davis instruments. 0-40 m/s.
This sensor will allow the replacement of mechanical anemometers / wind vanes with no need of anything else but power supply - also one type is running on solar panel also available.
It
Im waiting for price feedback on the Darrera, the LCJ CAPTEURS, SONIC-ANEMO-DVC price: 679 Euros ex VAT
Shipment cost : 42 Euros ex VAT
But i tink the sensor from Darrera is the one to choos, depend on price #-o
Reg snow/ice i have the netatmo Ultrasonic wind sensor mounted on same poll as davis, this one has had no error so far, also with lot of snow/sleet pooring down between -2 to +3 degrees outside.
So there is hope :lol:
Vaisala is not plug and play but has a lot of output possibilities including serial which Brian might be persuaded to add to WD, and “analog” that could most likely be adapted to Davis.
I’ve been reading this thread and unless I missed something, Bjorn has not indicated what the actual “failure” was with the wind vane. I can’t imagine it being a mechanical failure of the potentiometer itself unless there is some kind of violent swaying taking place with the mast. Based on the photos and comments, that doesn’t seem to be the issue. Also, turbulence shouldn’t be a factor since the wind vane is free to move around the pivot point and there is nothing else to cause vertical pitching from the winds.
Bjorn, exactly what is failing with your wind vane? Is there damage to the potentiometer or bearings, cabling, etc. Have you contacted Davis for support and help?
My 11-year old Davis unit has had anemometer failures but the wind vane failures have always been wiring/cabling and not the potentiometer itself. I get a lot of turbulent wind here in northern Nevada and a lot of it is quite variable in direction.
Well, high and turbulent winds could certainly contribute to early failure of the wind vane potentiometer but, it just seems strange that the failure rate is so high. I can see the old-style reed-switch anemometer having problems with high winds. Most of my VP2 wind issues have been (were) due to the reed-switch simply dying after several years of high/constant winds. The wind vane potentiometer never had a failure but the cabling did even though it was tied-down tightly. There apparently was still some movement due to the wind which resulted in eventual internal breakage of the solid wires in the cable.
That’s why I would love to see Bjorn disassemble the pot to see exactly what it looks like inside. It could also be due to the turbulent wind conditions forcing moisture inside the pot housing resulting in corrosion.
Darrera:
3R UAV01.10 ULTRASONIC ANEMOMETER FOR DAVIS VANTAGE PRO2, 10 METERS CABLE 1495 Euro.
3R UAV01A01 Built in HEATER (starts heating under 4 degrees) FOR 3R UAV01 200 Euro.
3R PWRA12150 POWER ADAPTER, 12 VDC, 1.5 A 25 Euro.
vat
Total 2274,80 Euro 20674.3 Nok 2373.71 Usd
The sensor has a 2-year warranty and the expected life is over 10 years.
Darrera heated Ultrasonic Anemometer for Davis VP2 on it way from spain. :lol:
Got a god deal with wife and ceo at darrera.
All connection and power supply is made plug and play.
Hope to have it here and mount it over this weekend.
Will be mounted 60 cm higher then the modified still working davis wind sensor.
But we have had no high gust wind here the last months.
Hi VENTS and thanks for input.
Have been in contact with lcj supplier some weeks ago reg SONIC-ANEMO-DVC (down in this thred) and its not suitable for my area and needs.
Have max 40 m/s and no heating possible.
Finaly the Darrera heated Ultrasonic Anemometer for Davis VP2 is mounted today at 14:00, aprox 50 cm higher then the davis.
Time will show how this will perform. 8)
and ceo at darrera.
