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No wind speed data being recorded

Posted: Sun 25 Nov 2012 9:13 am
by evo1966
Hi guys sorry if in wrong thread

I have a W8681 Weatherstation and although its blowing quite strong outdoors at the moment im not getting any wind speeds or gusts being recorded. Wondered if anyone could help with the problem?

David

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 11:37 am
by AllyCat
Hi David,

No wind readings on the Console nor in Cumulus? Has it ever given wind readings? Are all other (external) readings OK?

Most likely it's a bad cable / connection into the External Transmitter unit.

Cheers, Alan.

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 11:53 am
by evo1966
AllyCat wrote:Hi David,

No wind readings on the Console nor in Cumulus? Has it ever given wind readings? Are all other (external) readings OK?

Most likely it's a bad cable / connection into the External Transmitter unit.

Cheers, Alan.
Hi Alan and thank you for your reply...im getting all the other data....eg temp,humidity and a few days ago a 27mph gust recorded. Ive no idea how to sort it or where to start ,very frustrating :(

sorry no reading on indoor unit or cumulus

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 3:55 pm
by NO0C
Hi evo1966,

I would start by testing the wind speed sensor with a ohmmeter across the leads after unplugging it. Spinning the cups should show a switching from 0 to infinity at a frequency equal to the speed of the cups.

Good luck.

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 4:22 pm
by evo1966
NO0C wrote:Hi evo1966,

I would start by testing the wind speed sensor with a ohmmeter across the leads after unplugging it. Spinning the cups should show a switching from 0 to infinity at a frequency equal to the speed of the cups.

Good luck.
Sounds very technical that to me ........ I've only had the station 2 weeks and am really disappointed :(

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 7:45 pm
by dpmiller
unplug the sensor, and look inside the socket- check that the little gold contact springs are all hanging down equally. Then, with a fine screwdriver press gently on each of thee gold terminals in the plug. Connect and retry.

Re: No wind speed data being recorded

Posted: Sun 25 Nov 2012 9:31 pm
by AllyCat
Hi David,

Is it displaying wind direction? If not, then a "major" connection fault is indicated (i.e. more than just a single wire/contact is affected). dpmiller's suggestion is good, the two middle wires/pins are for wind speed, the two next to them (outside of the 4 wires) carry wind direction.

If only wind speed is affected, a simple test would be to swap the wind and rain plugs on the Transmitter. Then, a small amount of rotation of the anemometer should indicate lots of rain (0.3mm per half rotation) and pouring water into the rain gauge should indicate a small gust or some average windspeed (each 48 seconds). BEWARE: This test will of course upset your logs which may need some editing or deletion in Cumulus. Probably best to run and close down Cumulus just before the test and clear/reset the Console afterwards.

Cheers, Alan.

Re: No wind speed data being recorded

Posted: Mon 26 Nov 2012 6:40 am
by evo1966
dpmiller wrote:unplug the sensor, and look inside the socket- check that the little gold contact springs are all hanging down equally. Then, with a fine screwdriver press gently on each of thee gold terminals in the plug. Connect and retry.
Really appreciate your input and will try today when it gets light.........wind direction does display by the way.

Re: No wind speed data being recorded

Posted: Mon 26 Nov 2012 6:41 am
by evo1966
AllyCat wrote:Hi David,

Is it displaying wind direction? If not, then a "major" connection fault is indicated (i.e. more than just a single wire/contact is affected). dpmiller's suggestion is good, the two middle wires/pins are for wind speed, the two next to them (outside of the 4 wires) carry wind direction.

If only wind speed is affected, a simple test would be to swap the wind and rain plugs on the Transmitter. Then, a small amount of rotation of the anemometer should indicate lots of rain (0.3mm per half rotation) and pouring water into the rain gauge should indicate a small gust or some average windspeed (each 48 seconds). BEWARE: This test will of course upset your logs which may need some editing or deletion in Cumulus. Probably best to run and close down Cumulus just before the test and clear/reset the Console afterwards.

Cheers, Alan.
Alan....Really appreciate your input and will try today when it gets light.........wind direction does display by the way.

Re: No wind speed data being recorded

Posted: Tue 04 Dec 2012 12:39 pm
by mjn
Take the bottom off the wind speed unit (3 small screws) and make sure the two small wires coming away from the reed switch are not touching the small fixing screw of the circuit board - mine were and when bent away all was fine.