mbernhardt
Member
I have a Ranco digital controller and probe. It is used to turn a heating element on and off inside the mash tun, which is a 10 gallon igloo. I have a ciruclation pump which runs constantly, and the probe is measuring the temperature of the wort exiting the tank and into the pump. I have the controller differential set to 1 degree F. The heating element heats the liquid approximately 2 degrees F/minute.
My problem is that the probe seems to be too slow to adjust to temperature changes. When measuring with a calibrated thermometer, I am finding that because of this, the temperature may climb 4-5 degrees before the probe finally figures out that my target has been reached. Obviously this is far too much.
Is this normal or is this one defective? I can't find any documentation which indicates what the expected time should be. Is there another probe which may be more responsive to temperature changes? I have looked on line for alternatives but the reference temp and calibrations scales don't match up so they are useless.
My problem is that the probe seems to be too slow to adjust to temperature changes. When measuring with a calibrated thermometer, I am finding that because of this, the temperature may climb 4-5 degrees before the probe finally figures out that my target has been reached. Obviously this is far too much.
Is this normal or is this one defective? I can't find any documentation which indicates what the expected time should be. Is there another probe which may be more responsive to temperature changes? I have looked on line for alternatives but the reference temp and calibrations scales don't match up so they are useless.
