Davis wind direction fault

For discussion of any observing equipment, from Stevenson Screens and manual instruments to electronic weather stations

Davis wind direction fault

Postby Nick Gardner » 2012 Oct 19, 18:06

My Davis VP2+ wind direction is permanently stuck reading North, yet the wind speed recording is perfectly normal.

Looking back at the 15-minute data sets this fault happened suddenly, and during a recent windy spell of weather. The wind direction was SSE then the next data set shows Northerly, and it has been like that ever since (for 3 days now).

All the wiring has remained undisturbed, i.e., nothing obvious and the wind vane is moving freely as normal.

The only thing I can find relating to a 'wind direction only' fault on the internet says that it is highly unlikely as the potentiometer is usually very reliable.

I've done all the usual unplugging and checking connections. Anyone else ever had this fault?
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: Davis wind direction fault

Postby Nick Gardner » 2012 Oct 21, 19:42

Update: The wind speed has now been lost too.

The cable runs under the conservatory wooden floor and I've discovered a mouse hole nearby...... maybe the little rodent has chewed my wires.

I will investigate, and set a humane trap for the little beasty.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: Davis wind direction fault

Postby Nick Gardner » 2012 Oct 30, 20:04

Nick Gardner wrote:The cable runs under the conservatory wooden floor and I've discovered a mouse hole nearby...... maybe the little rodent has chewed my wires.


After lifting a few floor boards, I found the problem. A wee mouse had indeed chewed the ethernet cables, completely severing the one that carries the wind and direction. The other cable was chewed too, but not enough to stop the UV & solar irradiance measurements from working.

Done a temporary 'patch up' but I'll replace with armoured ethernet cable (I managed to scrounge a 100 metres of the stuff a while back).
chewedcable27Oct2012.JPG
chewedcable27Oct2012.JPG (113.42 KiB) Viewed 1006 times
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.


Return to Equipment



Who is online

Users browsing this forum: No registered users and 1 guest

cron