very short intervals

banditpowdercoat · #1 03-11-2009, 12:13 PM

Easiest way I know is with 2 Omron Timers. Most Electrical wholesalers/commercial contractors will have Omron Timers. H3CR is the model code I use. With the 2 timers, you wire them up so the one sets on time, then the other sets the off time. You will probibally not find a ready made timer setup for purchase for your unique application. If you need help, I can draw you out a wiring schematic for wiring. They should also be able to help you at the Elec supply store

RCFA · #2 03-11-2009, 03:26 PM

I came across this thread on Reef Central and it may be just what you are looking for:

http://www.reefcentral.com/forums/sh...5&pagenumber=1

It is a lgihting timer but you can control the intervals. Sounds like it might be what you need. Here is a link where you can get it:

http://www.progearwarehouse.com/Chauvet-SF-4005

I'm considering getting one, just trying to figure out the best/cheapest way to get it to canada.

christyf5 · #3 03-11-2009, 03:35 PM

Wrong time of year but I used to use christmas light timers, basically they plugged into the wall and then your christmas lights would plug into them. I got them from the dollar store and they worked awesome on hagen/MJ powerheads. You might try that route.

justinl · #4 03-11-2009, 11:08 PM

thanks for the input guys. I will definitely look into that DJ light timer... In fact I'll probably pick one up for myself while I'm at it since it looks like a very cheap alternative to a wavemaker and would do well on my own tank at home!

untamed · #5 03-11-2009, 11:13 PM

I can see that the trick to this is going to be getting the on/off adjustable to the second. There are lots of timers, but they are limited to on/off by minute.

I control my peristaltic pumps to the second with my Aquatronica...but I'm sure you don't want to go that extreme.

Delphinus · #6 03-12-2009, 12:07 AM

Something to look into maybe what they call "repeat cycle" or "percentage cycle" timers.

Some links you can try exploring (look at page 2 of this thread):
http://www.canreef.com/vbulletin/sho...d.php?t=43323&

Happy hunting though .. I don't imagine you'll find these timers at your average hardware store.

Pescador · #7 03-12-2009, 12:07 AM

The only programmable timer I can find with a minimum setting of 1 sec is the Mist King timer I use on my viv.
It only has 8 programs so it might not be enough for you.
There are repeat cycle timers that go down to 5 sec and I think I saw some that were min 1 sec. Check out the hydroponic stores.

spreerider · #8 03-12-2009, 07:04 AM

there are many electronic timmers that are for industrial and commercial use, just check with an electrical supply store and see what they can get you.
I think Omron makes a fully programable down to the second 24hr timer
i have one at work that can be programed down to the second in a full year period, just needs to be wired up and then programmed

banditpowdercoat · #9 03-12-2009, 01:20 PM

Quote:

Originally Posted by Pescador

The only programmable timer I can find with a minimum setting of 1 sec is the Mist King timer I use on my viv.
It only has 8 programs so it might not be enough for you.
There are repeat cycle timers that go down to 5 sec and I think I saw some that were min 1 sec. Check out the hydroponic stores.

Those are the timers I am talking about. Omron H3scr's have On delay, Off delay, repeat, and other featires built in. BUT, the repeat is the same on/off time. SO, if you set a 5 sec time, it will be 5 sec on/5 sec off. You need 2timers One in ON delay, on in OFF delay.

That price is also a bit high I think. Check eBay for some smokin deals too. Omron makes timers 1/4 the side of that one too. The one in your link is 1/16 DIN Sized. THey make smaller ones, 1/32 DIN I think?

Heres one $20
http://cgi.ebay.com/H3CR-A8-OMRON-Ti...3%3A1|294%3A50

Here is the PDF file on the omron H3CR series timers

http://www.omron247.com/doc/pdfcatal...9H3CRA0302.pdf