[beerdrinker13]

I do have a temperature question. I just bought a brewmaster digital thermometer controller off the website. I set the temp at 38 degrees,this is with the sensor in a glass of water inside the kegerator. I'm getting a steady readout of 38 degrees on the controller, but when I pour my 2nd glass of beer and take the temp of the beer, I'm getting a 41 degree readout of the temp of the beer. Should I keep taking the temperature down on the controller until I can get a readout of exactly 38 degrees in the 2nd glass of beer that I pour out of the tap? The temp of the beer in the glass would be the true temp of the beer inside of the keg, right? Also, I did install a fan inside my kegerator with an air tube going up into my beer tower to circulate the cold air up the tower and then back down. Thanks for all the help!