Calibrating Humidity & Temperature Controls

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Today we make a long overdue video on how to calibrate your humidity and temperature controls for your drying chamber. This is so important as improper reading will either bring unwanted mold growth, case hardening, improper fermentation, or all sorts of other problems. This tutorial can be applied to every controller that is used to measure humidity or temp. So if you are into cheese making, wine/beer brewing, growing mushrooms, cigars, it doesn't matter.


There are 2 ways to calibrate your humidity controller. The first way is demonstrated in this video at the beginning. Take a lid and fill it with additive free salt. Add a tiny bit of water to just make it wet and there is no free standing water in the salt. Place this in a jar and add your probes so that the probes free hang about 3 inches above the salt/water solution. Cover tightly with a lid (that has a hole in it or wrap with foil to cover the top.

You want the jar to be completely enclosed. This will give you a 75% rH in the jar. Once the probes are in the jar wait for 8-12 hours and adjust your controllers so that they now read 75%. This is how we calibrate the sensors.

The other way to do this is to take the salt/water lid and place it in a zip lock bag. Add your probes and seal the bag off. Wait 8-12 hours and adjust the controller to 75%.

To calibrate the temperature you will need to make a water/ice bath. Take 3 cups of ice and 1 cup of water and allow it to sit for 10 minutes. The water temperature should be at 32F. I double check with an external probe just to be sure. Wrap your temperature probe in a plastic bag (so it doesn't get we) and dip it in the water for 4 minutes. Your temperature reading should be 32F if not you can adjust it at this point.

Your controllers are now calibrated!!

Here are the controllers that I use. The first one is from Inkbird as this is the more economical controller and the second is from Auber Instruments which has more options, safety features, and precise adjustments. If you were to ask me which one is better I would easily recommend the Auber but both will do the job.


You can find the auber controller and all sorts of other things from their web site Be sure to check them out here:
https://www.sausagemaker.com/?Click=1...

Here is the Ink Bird Controller:
InkBird Controllers temp & Humidity https://amzn.to/2O3BmM7

We use The Sausage Maker for all many of our projects (They have a little bit of everything). https://www.sausagemaker.com/?Click=1...



This is my recommendation for my absolute favorite thermometers.

• Thermapen Mk4 - http://www.thermoworks.com/Thermapen-...

• Magnetic silicone boot for Thermapen - https://www.thermoworks.com/Thermapen...

• DOT Kitchen Temperature Reader - https://www.thermoworks.com/DOT?tw=2G...

• Signals (4 Channel Temperature Probe) - https://www.thermoworks.com/Signals?t...

• Extra Big and Loud Kitchen Timer/Alarm - https://www.thermoworks.com/Extra-Big...

• Pocket Temp/Humidity Meter: https://www.thermoworks.com/Pocket-TH...







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Eric