In a video I watched a brewer seemed to have his ink bird probe on the outside of his fermentor, held in place with some kind of putty. Does anyone know if this is effective?
In a video I watched a brewer seemed to have his ink bird probe on the outside of his fermentor, held in place with some kind of putty. Does anyone know if this is effective?
If it is in a fridge then hanging in the air is suitable to keep the temperatures stable with little fluctuation.
I found exactly the opposite to be true, just left flapping about my inkbird was on and off as frequently as the compressor delay allowed for. Plus the swings were much bigger, inside or underneath the bucket it spends ages [as in big chunks of an hour or more] moving 1/2 a degree or so whereas outside and away from the bucket it can move by as much as 2 or 3 degrees in a few minutes.
Different fridges behave differently I guess.
Moving the temperature of the wort is a very slow process, inside the bucket or attached to the bucket means that you will be trying to add heat (or remove heat) for a long time to see a slight change, therefore the inkbird will fluctuate less often but likely for higher amounts of change. This will happen as there will be a lag, i.e. when the wort has heated to 20ðC the air around is likely much higher than this, even though the heat is then turned off the wort will keep heating eventually overshooting and causing the cooling to come on. Controlling the air temperature is much easier so there will be quicker fluctuations but they will be much smaller.
The post linked below shows it much better:
www.thehomebrewforum.co.uk/showthread.php?t=54503&highlight=temperature&page=2
Moving the temperature of the wort is a very slow process, inside the bucket or attached to the bucket means that you will be trying to add heat (or remove heat) for a long time to see a slight change, therefore the inkbird will fluctuate less often but likely for higher amounts of change. This will happen as there will be a lag, i.e. when the wort has heated to 20ðC the air around is likely much higher than this, even though the heat is then turned off the wort will keep heating eventually overshooting and causing the cooling to come on. Controlling the air temperature is much easier so there will be quicker fluctuations but they will be much smaller.
That is just so counterintuitive. If my wort temp raises from 19 to 19.5 my inkbird switches the cooler on and keeps it on until the wort temp is back to 19, takes a few minutes. Then an hour for it to rise another 1/2 degree. Rinse and repeat. That's nice, energy efficient, doesn't stress the compressor or whatever it's called, that's how I like it.
If my probe is in mid air and the air temp rises to 19.5, the cooler comes on and it takes a fridge seconds to reduce the air back to 19. it then takes only minutes to return back to 19.5 and the fridge is on and off and on and off every minute or two. Way too inefficient for my liking. More likely to trash the fridge too.
Surely, if wort takes a long time to fully change temperature, and if you set your inkbird to 19ð, and have the max @ 20ð and the minimum @ 18ð, then no matter how quickly the air in the fridge hits the maximum and minimum temps, the wort will be pretty much stuck in the middle? I.e. 19ð (or thereabouts).
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