Originally Posted by Esmitee
Hia, I've been using my STC 1000 dual controller for almost a year now. I just noticed a temp difference in readings from the STC 1000 to another digital t-meter I have attached to the carboy @ the same spot. The difference is like 3-4*. Quite a bit O difference, I'd say . Do you have to calibrate the STC 1000? If so, how do I do that?
It's a good idea to at least check to see if the probe reading is accurate. Calibration is the F4 setting in the programming menu.
An ice water slurry is probably the best reference point for a keezer or ferm chamber. Crush up some ice, put it in a glass, and add just enough distilled water to create an ice slurry. Mix it up and wait a minute for the temperature of the slurry to stabilize. Put the probe in the slurry and let the temp reading stabilize. However far it is from 0°C is how much you need to adjust the F4 setting. If the probe is reading 0.3°C high, then you'll want to set F4 to -0.3.
Press and hold the "S" button for 3 seconds.
Press the "Down Arrow" until F4 displays.
Press and hold the "S" key and at the same time use the up and down arrows to adjust the setting.
Press the "Power" key to save the setting. If you do not press the power key, the setting will not be recorded.