Electrics / electronics question.

I'm trying to locate a 24 hour, 240v timer that will supply power to one channel in one position and another in the other if you know what I mean. I'm having trouble and I reckon it's because there's a term I should be using in my searches.</p>



Any ideas?</p>



Ta.</p>

 

? Multichannel timers 

 

Just what are you trying to do?

Just describe and I will see what I can think of?</p>

Are you trying to alternate the operation of two pieces of equipment over 24 hours? like in a duty change over arrangement or something more complicated?</p>

A digital central heating timer ought to do what you are trying I think..??</p>

 

¿Que?

Could you rustle up a drawing?
Not really with you on that one.

Do you sort of mean something with two sockets, whereby if, say, you have two lamps plugged into it, one would be powered from time A to time B, then the other one from time B to time A.

Is that it?

 

something like this ought to do it??? erm..link now added

with a bit of thought. </p>

http://www.horstmann.co.uk/central-heating.asp#ChannelPlus</p>

 

I've tried that mate.

They switch all the channels on and off at the same time.</p>

 

Soz, I'll try to describe it better.

It needs to toggle from line 1 to line 2. Fifteen minute or half hour intervals throughout the day.</p>



Hope that's clearer.</p>

 

switching power?

240v</p>

or data??</p>

 

240v

It's for a flood and drain irrigation system. I suppose a 2 channel central heating programmer might do but you're relying on the consumer to get it right.</p>

 

Yes, but hard wired. Preferably 15 minute segmental.

 

owt here?.

http://www.toolstation.com/shop/Electrical/Timers&amp;RCD's/d190/sd2660</p>

 

owt here?.

http://www.toolstation.com/shop/Electrical/Timers&amp;RCD's/d190/sd2660</p>

 

If a standard timer will do what you want

simply take out the gubbins and put into a box without control or disable the controls</p>

Or get some electrical bod to </p>

 

They need to be able to programme it themselves mate.

A 24 hr, 15 minute segmental timer would be ideal but it needs to toggle between supply to two pumps.</p>

 

Nope, see below.

 

should be simple enough

Should be simple to do with a off the shelf timer and a relay if its just switching from one to the other.</p>

The timer just needs to pull in the relay coil to switch between the two supplies/ pumps..I think.</p>

Is this a multiple unit application or a one off unit??</p>

 

Multi unit.

I'll send you a PM.</p>

 

You trying to set up a hydroponics system or something?

 

What can you grow using hydroponics?

Let me think.

 

**** knows

Higher Yields
Hydroponic averages compared with ordinary soil yields[2] Bengal United States West Indies
Name of crop Hydroponic equivalent per acre Agricultural average per acre Hydroponic equivalent per acre Agricultural average per acre Hydroponic equivalent per acre Agricultural average per acre
Wheat 5,000 lb. 600 lb.
Oats 3,000 lb. 850 lb.
Rice 12,000 lb. 750-900 lb.
Maize 8,000 lb. 1,500 lb.
Soya beans 1,500 lb. 600 lb.
Potatoes 70 tons 8 tons 62.5 tons 6-10 tons
Beetroot 20,000 lb. 9.000 lb.
Cabbage 18,000 lb. 13,000 lb.
Peas 14,000 lb. 2,000 lb.
Tomatoes 180 tons 5-10 tons 300 tons in Florida 5-10 tons for unstaked field plants; 50 tons for greenhouse cultured crops 178 tons per annum on a commercial field scale
Cauliflowers 30,000 lb. 10-15,000 lb.
French beans 42,000 lb. of pods for eating
Lettuce 21,000 lb. 9,000 lb.
Lady's finder 19,000 lb. 5-8,000 lb.
Cucumber 28,000 lb. 7,000 lb.