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mattd2 · 07-10-2011, 12:22 PM

Quote:

Originally Posted by downtime89

Ok this controller off of ebay, the 110v version, i plan on using it for a aquarium now here is my question can you set it were the cold side comes on at say 84° but the heat side does not come until it reaches say below 76°? Can both sides have there own setting? Also i dont know if anyone has done this yet as i am not reading that many pages but i am going to add a relay to my cold side to make stuff like my heat building aquarium lights shut off as well when the cold side comes on.

Quote:

Originally Posted by usfmikeb

I don't believe this particular unit can do two different temps.

It has a setting for the deadband (I think thats the name for it) to a max of 10 degrees C. So if you set it at 80 deg. F with a deadband of 12 deg. F I think it should do what you want (you will have to set it in degrees C though

)

BrewForMe · 07-10-2011, 12:27 PM

If I order this from the seller that states they ship 110v to countries that use it and 220v to countries that use that, will i get 110v or are there alot of screw-ups in this department?

Anyone with experience?

**FooFan** · 07-10-2011, 01:36 PM

I live in Atlanta GA and mine came in the correct voltage.

downtime89 · 07-10-2011, 04:32 PM

Quote:

Originally Posted by mattd2

It has a setting for the deadband (I think thats the name for it) to a max of 10 degrees C. So if you set it at 80 deg. F with a deadband of 12 deg. F I think it should do what you want (you will have to set it in degrees C though

)

can someone test this theory for me before i order one? say set a temp to heat up tp 76 and stop then cool if it hits 84. So set a dead band of 8 degrees between 76 and 84 is that right matt2d?

**JuanMoore** · 07-10-2011, 06:12 PM

Quote:

Originally Posted by downtime89

Ok this controller off of ebay, the 110v version, i plan on using it for a aquarium now here is my question can you set it were the cold side comes on at say 84° but the heat side does not come until it reaches say below 76°? Can both sides have there own setting? Also i dont know if anyone has done this yet as i am not reading that many pages but i am going to add a relay to my cold side to make stuff like my heat building aquarium lights shut off as well when the cold side comes on.

The STC-1000 is programmed using one set value and one differential value for both heating and cooling. The way this works is that when the probe temp reads the set value plus the differential value, the cooling relay is activated and stays on until it reaches the set value. When the probe reads the set temp minus the differential, it activates the heat relay and stays on until the set temp is reached. To do what you're describing you'd simply put the set temp at 80, and the differential at 4. This would activate cooling at 84, keep cooling until 80, activate heating at 76, and keep heating to 80. I'm guessing you're referring to degrees fahrenheit though, and this controller is celcius. Converting to celcius, you'd want to put the set temp at ~26.7C and the differential at ~2.2C.

**JuanMoore** · 07-10-2011, 06:15 PM

Quote:

Originally Posted by BrewForMe

If I order this from the seller that states they ship 110v to countries that use it and 220v to countries that use that, will i get 110v or are there alot of screw-ups in this department?

Anyone with experience?

Most have gotten the right one if it had that wording in the listing, but it's probably a good idea to write a reminder that you need the 110v version in the notes section when you pay.

downtime89 · 07-10-2011, 06:16 PM

lol its for a aquarium.

krazydave · 07-10-2011, 09:47 PM

Can someone who's gone through this whole huge thread help me out here?
I'm looking for a schematic to wire this controller and have a small 12VDC PC fan turn on whenever the heating or cooling relays are active.
I understand I would likely need a separate relay to do so. To get the 12VDC from a wall-wort or some other type of power supply to the fan... Just curious what type of relay I'd need and where to wire the coil(s) to.

**emjay** · 07-10-2011, 10:51 PM

Quote:

Originally Posted by krazydave

Can someone who's gone through this whole huge thread help me out here?
I'm looking for a schematic to wire this controller and have a small 12VDC PC fan turn on whenever the heating or cooling relays are active.
I understand I would likely need a separate relay to do so. To get the 12VDC from a wall-wort or some other type of power supply to the fan... Just curious what type of relay I'd need and where to wire the coil(s) to.

I thought about that too (wiring it into both would have the effect of the heat relay turning on the cooling device, and vice versa), but I ultimately decided that the fan really uses such low wattage, and that it will still provide a small benefit, that I was better off just providing the fan an"always on" power source.

downtime89 · 07-10-2011, 11:50 PM

Quote:

Originally Posted by JuanMoore

The STC-1000 is programmed using one set value and one differential value for both heating and cooling. The way this works is that when the probe temp reads the set value plus the differential value, the cooling relay is activated and stays on until it reaches the set value. When the probe reads the set temp minus the differential, it activates the heat relay and stays on until the set temp is reached. To do what you're describing you'd simply put the set temp at 80, and the differential at 4. This would activate cooling at 84, keep cooling until 80, activate heating at 76, and keep heating to 80. I'm guessing you're referring to degrees fahrenheit though, and this controller is celcius. Converting to celcius, you'd want to put the set temp at ~26.7C and the differential at ~2.2C.

So if the heat is set at 80 the heater not kick on at 80? i think a reef aquarium would have alot of issues going from 76-80 back and forth all day long. Altho i it shouldnt go over the set heat very often.I am going to have fun seeing if i can make this work... lol