Float Switches

benf

Premium Member
Is there a place recommended for buying float switches approved to be used with the AC3?

Thanks
Ben
 
Any normally open or normally closed switch should work fine. We got ours from floatswitches dot net. It was rumored that Neptune was working on a float switch solution, but I haven't heard any updates lately.

-Doug
 
I was looking at some of the switches and they list switching watts, voltage, and amps....how do i know which one to get for the AC3.

Basically i want to use it in my sump to signal the controller to turn off the PH dosing pump if the water level reaches a certain height.
 
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The AquaController inputs are 5 Volts, and very low current (less than 10 mA), so pretty much any switch will work with it. You don't really need to worry about the watts, voltages, amps specs.

Curt
 
I am having trouble visualizing this. How would I have my ACII control water level using a float switch?
 
<a href=showthread.php?s=&postid=10661469#post10661469 target=_blank>Originally posted</a> by jglackin
I am having trouble visualizing this. How would I have my ACII control water level using a float switch?
When the float switch opens (or closes - depending on your code), turn on your pump or RO/DI valve to begin filling until the switch closes again. It's best to use a MAX Change statement to resolve float bounce issues.

Here is our code;

If Switch1 CLOSED Then SW1 ON // Low sump level
If Switch1 OPEN Then SW1 OFF // Sump Full
Max Change 005 M Then SW1 OFF // Bounce control

-Doug
 
Thanks. What does the float switch close the circuit with? Is there a special controller that I need to purchase?
 
<a href=showthread.php?s=&postid=10661676#post10661676 target=_blank>Originally posted</a> by jglackin
Thanks. What does the float switch close the circuit with? Is there a special controller that I need to purchase?
No controller needed. It's a simple reed contact closure with a magnet in the float. As the float rides up and down, the magnet trips the reed in the stem to close the circuit. By flipping the float over on the one we use, you can change it between normally open and normally closed.

-Doug
 
Ah... The magic connection.

You will need to build a cable to attach to your MiniDIMM serial port on the controller. According to the ACII manual (page 52), use Pin 2 and Pin 8 of the connector for your float connections. I think I used a keyboard or Mouse extension cable to get the connections I needed.

http://www.neptunesys.com/AquaController2.pdf

You can also buy the Neptune Break-Out box for easier connections.

-Doug
 
Sorry, one more question on float switches:

Can something like this be used with the AC? The float switch closes a circuit with this and then this sends a signal back to the AC which then triggers the pump to turn on?

http://www.smarthome.com/4060.html

4060big.gif
 
<a href=showthread.php?s=&postid=10662556#post10662556 target=_blank>Originally posted</a> by dougchambers


You can also buy the Neptune Break-Out box for easier connections.

-Doug

Neptune's write up on the breakout box indicates that it is only for the ACIII and ACIII Pro.
 
you can get float switches from AquaHub.com, where they have a DIY guide to constructing whole switch assembly.


See, also, this thread where I outline my experience putting together a float system for my ACIII.

Feel free to PM or EM me with your phone number if you want me to give you a call to walk you through putting the whole thing together and AC code to use with it.

Ken
 
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