Re: Rain Sensor - as a digital input

[Neil Fuller <neil.fuller@xxxxxxxxx>]

Paul

They are actually very good!

A light sprinkling of drizzle is enough to trigger them so they are
reasonably sensitive, although the sensitivity can be adjusted.

The outdoor unit incorporates an integral heater to dry the surface off
once the rain has stopped and to prevent dew from triggering the unit.

If the input to the Velux controller is a simple volt free contact, I
think you would be happy with one of these as a replacement

Cheers

Neil.

On 01/08/2010 10:55, Paul Gale wrote:
>
> They're interesting :)
>
> How good are they in practise - i.e. how heavy does the rain need to
> be to trigger and how quickly do they dry off?
>
> I'm also wondering if you would need two so that they can be angled in
> different directions to allow excess rain to run off and hence dry out
> quicker but also allow sensitive detection of blowing rain???
>
> I have rain sensors on my electric Velux windows which can be really
> annoying in the summer with light showers as the window closes to the
> vent position, doesn't open again after a shower and the sensor can
> take a while to dry off. Been thinking of bypassing to allow more
> intelligent control.
>
> Cheers,
>
> Paul.
>
> -----Original Message-----
> From: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>]
On
> Behalf Of Neil
> Sent: 01 August 2010 09:06
> To: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> Subject: Re: [ukha_d] Rain Sensor - as a digital input
>
> On 01/08/2010 08:58, Gareth Cook wrote:
>
> I've used loads of these.....
>
> http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1121
> <http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1121>
>
> and you'll also need one of these.....
>
> http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1118
> <http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1118>
>
> and a 24 volt AC supply
>
> or one of these.....
>
> http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1120
> <http://www.ecproducts.co.uk/productdetail.asp?cat=23&item=1&pid=1120>
>
> Be careful of ones that don't have integral heaters. They will
> indicate rain when there's only condensing dew.
>
> Speak to Mickey at ECP - 020 8569 4100.
>
> I get a good discount so you can order through me if you want to.
>
> HTH
>
> Neil
> >
> > I'm after a rain sensor I can use to connect as an input into
Comfort
> > - digital input so on or off - so I can put some logic in for the
> > sprinklers.
> >
> > Does anyone use one ?
> >
> > tia
> >
>
> [Non-text portions of this message have been removed]
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>


[Non-text portions of this message have been removed]



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