lassebn85
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Hi Fellow home brewers!
Recently I bought a Kegland Rapt fermentation chamber + Rapt Pill.
I'm having issues with it experiencing relatively large temperature fluctuations.
They promise stability as shown in the example below
However, in my case, using my fermentation chamber, I'm experiencing the following:
In their example, you can see that the built-in temperature sensor of the ferment chamber deviates by +/- 0.5 degrees from the target temp, while the Rapt Pill/beer temperature remains more or less spot on the target.
On the contrary, I'm observing that it is the Rapt Pill's/beer's temperature that deviates by -0.5 to +1.0 degree from the target temperature (which aligns with me setting the cooling abd heating hysteresis to +1.0 and -0.5 degrees, respectively). at the same time, the temperature in the ferment chamber jumps up and down between -7 and -1 degree from the target.
Why isn't my refrigerator behaving as promised in their example? In their example, it is evident that when the beer/Rapt Pill reaches the target temp, the ferment chamber's temperature will be within +/- 0.5 degrees of the target, meaning the beer is spot on the target.
My setup is as follows:
Can anyone figure out why my ferment chamber's cooling and heating are triggered by the beers temperature instead of the ferment chambers, as shown in Keglandsexample?
Kind regards
Lasse
Recently I bought a Kegland Rapt fermentation chamber + Rapt Pill.
I'm having issues with it experiencing relatively large temperature fluctuations.
They promise stability as shown in the example below
However, in my case, using my fermentation chamber, I'm experiencing the following:
In their example, you can see that the built-in temperature sensor of the ferment chamber deviates by +/- 0.5 degrees from the target temp, while the Rapt Pill/beer temperature remains more or less spot on the target.
On the contrary, I'm observing that it is the Rapt Pill's/beer's temperature that deviates by -0.5 to +1.0 degree from the target temperature (which aligns with me setting the cooling abd heating hysteresis to +1.0 and -0.5 degrees, respectively). at the same time, the temperature in the ferment chamber jumps up and down between -7 and -1 degree from the target.
Why isn't my refrigerator behaving as promised in their example? In their example, it is evident that when the beer/Rapt Pill reaches the target temp, the ferment chamber's temperature will be within +/- 0.5 degrees of the target, meaning the beer is spot on the target.
My setup is as follows:
- Cooling hysteris 1 degree
- Heating hyseresis -0,5 degree
- Compressor cool down 5 minutes
- Mode Switch Delay 15 minutes
- Cooler enabled Yes
- Heater enabled Yes
- Fan always on Yes
- Bluetooth enabled Yes
- Allowed sensor diff 5 degrees
- Sensor timeout 130 seconds
- NTC Beta 3950 K
- NTC ref. temperature 298, K
- NTC ref. resistance 1000000 oh
- Relay cycle time 120 seconds
- PID heating No
- PID P coefficient 0,5
- PID I coefficient 0,0
Can anyone figure out why my ferment chamber's cooling and heating are triggered by the beers temperature instead of the ferment chambers, as shown in Keglandsexample?
Kind regards
Lasse
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