The Planted Tank Forum - View Single Post - could not find a quality ph controller for 240V
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post #1 of (permalink) Old 07-08-2013, 09:57 AM Thread Starter
ewanvt
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Join Date: May 2013
Location: Australia
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could not find a quality ph controller for 240V

Just thought i would share my findings with getting a non Chinese PH controller that works on 240 Volt (australia).

I have looked everywhere for a quality PH controller that would work on 240V but could not find any.

I decided to modify a Milwaukee MC 122
http://www.milwaukeeinst.com/site/co...nt/article/231

so here is what you do.

open up the unit and remove the two wires that go to the relay in the unit, this would normally switch the incoming 110V.

using a second relay that works with a 12v coil connect this relay via a 12V circuit and the Milwaukee relay.

now connect your new relay to 240V mains and your load.

pictures explain it better




http://imgur.com/43NbRoJ&Zn1JjrN&Qfrl9Wa#1
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