[DonW]

Just showing off timers. These have been an ongoing project for the couple years and I have finally been able to get everything needed. They are a special order item but are well worth the wait.
These are a self install timer with lots of functionality and are programable. The size makes them easy to install right in most fixtures and projects. What makes them so nice is the ability to time most anything. Lately Ive sent them out to control a customers halides and personally use them where ever I can.

Below are some quick pics of the timer being used to convert a aqualifter into a dosing pump. The timer can be programmed right down to the 60th of a second. The timer can be set to dose one drop per day if desired or 2ml 10 times per day its up to you.

Don

[Poseidon]

That looks neat Don, how do set such a specific rate using the aqualifter? Also, you said you used them for halides, I assume they would work well for T5's as well?

Do you have a link to them on your page with a cost?

[DonW]

Originally Posted by Poseidon

That looks neat Don, how do set such a specific rate using the aqualifter? Also, you said you used them for halides, I assume they would work well for T5's as well?

Do you have a link to them on your page with a cost?

They are on my site under timers but I have a long ways to go to finish the page. Cost is straight forward $30 ea and $30 for the programmer. The tiny ones are limited to 3A so t-5s are not a problem. Scooty just put some on his halides 2 timers @ 250w ea.
You need one programmer and as many timers as needed. So for an aqalifter to dose one drop per day at 2ft of head you would just set the timer to run for 5/60 of a second once per day and off for the remainder of the day. Of course the same with lights 8 hours on 16 off, the same for kalk stirrers and so on. They can also start with a off cycle making them an cool feeding timer.

Make sense?

Don

[DonW]

Here is the low voltage design. This one is half the size of the other about as big as the end of your thumb. It controlls 12vdc. Good for things like leds and cooling fans. My first use for this timer was a simple auto top off using a inexpensive tunze osmolator replacement pump. This gives you a two float ato with a time out option exactly like the JBJ but all low voltage.

Another use is to control the inexpensive 12v peristaltic pumps. These pumps are easily had but with the use of the timer you can get the accuracy and functionality of the $300 liter meter for 1/3 the cost.

Don

[Poseidon]

So.... You don't set the time with these, rather the a sequence, from NOW I will be on for X hours (or off) then I will be off (or on). Do you have to program them at the time you want, or can you set the time via the programmer?

[DonW]

They do intervals. When you power the device the timer starts running. So if you plug it in at 8am it will start the first interval on or off then just keep going from then on.

Don

[Poseidon]

Got it. What about power failures, what happens?

[DonW]

Originally Posted by Poseidon

Got it. What about power failures, what happens?

Basicly if your using them for lighting your stuck reseting your halides. Personally I dont see it as a big issue but that seems to be the biggest draw back to using them on lights. Things like kalk stirrers, dosers and feeding timers really dont mater they just keep going. I think the best use so far is adding timing to ato's and making dosing affordable.

Don