New Grower Is this fan speed controller safe to use with my inline fan?

[420ing]

Hello i just got myself a carbon filter and inline fan and at night the temps are dipping down to 16.5c with it turned on,i was going to try and get a fan speed controller for the inline fan and thought this looked pretty good.

www.discount-electrical.co.uk/produ...al-series-variable-speed-controller-with-neon

I just wonder if this is safe to use? I have a Airteq HCGF100 and its rated around 65-70 watts.

 

[namvet25]

Looks ok to me,should work fine.

 

[pop22]

what’s the power draw of your fan? that controller is only good for 200 watts

 

[Gonzo]

Hello i just got myself a carbon filter and inline fan and at night the temps are dipping down to 16.5c with it turned on,i was going to try and get a fan speed controller for the inline fan and thought this looked pretty good.

www.discount-electrical.co.uk/product.php/387143237/manrose-comtscv-commercial-series-variable-speed-controller-with-neon

I just wonder if this is safe to use? I have a Airteq HCGF100 and its rated around 65-70 watts.

Speed controler is safe to use, but I am not sure that it will solve your problem. Why? because the lowest voltage that speed controller sends to fan might be too high for you.

I had bought strong Soller&Pallau fan with speed controller and the lowest power was still far, far too strong. I had same problem as you.

With Prima Klima VK125, which has speed control built in, it is better, it is able to work really slow, but unfortunately it is very loud on small rotation.

If you want to prevent cooling down your tent, you need quite low circulation, in fact very low, otherwise it changes air too quick and heat goes out.

 

[namvet25]

He said his fan draws 65 to 70 watts.

 

[pop22]

you could put it on a timer, wouldn't hurt anything to have it turn off for a couple hours at a time, during the night.

 

[medic grower]

Cheap and Simple Solution Google SMScom Fan Speed Controller.... its for Outtake/Intake Fans and over here(Germany) it costs only 29 bucks.

 

[BII]

A different approach: Rather than try to control temperature by reducing cold air intake to some slower speed - unpredictable outcome; no real temperature control - why not use a thermostat to cycle your fan off and on?

For example, I use a "Lux WIN100 Thermostat Digital Programmable Outlet Thermostat." It cost $30+ in the U.S. See http://luxproducts.com/thermostats/win100.php and http://www.amazon.com/dp/B000E7NYY8/. It's just an inline digital thermostat. You plug this in inside your tent, plug your fan into this, set the temperature at which you want it to turn on the fan, and set the temperature difference at which you want it to turn off (set the lower cutoff temp.).

For example, I set the temp. at 80˚F, with the fan coming on when the canopy temp. is at 78˚F; and the fan turns off when the temp. goes down 2˚F (to 73˚F at the canopy level). It may not be perfect in the sense that continuous air input is presumably ideal, but just cooling a tent 2 degrees requires full air replacement [plus of course also have internal fan(s) going]. The fan will cycle on/off as fast as your light(s) can heat the air the temperature difference you've selected. The unit can also be switched to control an air conditioner.

 

[Trapper]

The problem, as I see it, with cycling the exhaust on and off is relative humidity...

I have temp issues this winter in my main tent and have my fan controller on the lowest
setting for the exhaust...sometimes, if I go too low on the dial for fan speed, it turns
off and the RH skyrockets....like into the 70% range. And I live in a very dry climate.

These observations occurred before the snow flew....in a 20% RH environment......
Now that the RH (due to the snow) is in the low 50's RH% I can only imagine what
turning the fan off would do.

Now, for short periods of time, I don't see that as an issue...but if you attempt to
automate that process, conditions may present that will just seek to keep it off all
the time (or a majority of the time) independent of resulting, prolonged high RH....

 

[BII]

Yes, RH rises the longer the fan is off. But keep in mind, the temp. is also presumably rising too (and probably quicker), which will turn on the fan. I see at most a 10% swing in humidity readings.

Remember, the fan will cycle on/off depending on how you set it. If you want it to relatively rapidly cycle off and on, and also keep a very constant temp., just set the thermostat to turn off after cooling 1 degree. Then when your lights presumably quickly heat the air just 1 degree, the fan comes on. Presuming the source air is cooler than your setting, this will provide rather foolproof constant temperature control.

In your tent, how fast does the temp. rise say 2 degrees, compared to how much the humidity goes up in that time?