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Some days....
Apr. 8th, 2009 03:00 pmWe're doing temperature monitoring experiments in our new microscope lab.
For the past 5 days, the monitored temperature of our water system has been slowly dropping. The water chiller on the supply side shows a constant temperature, however.
I finally figured out the problem. Both monitor thermocouples are connected to the computer that I'm using as a data logger by a battery-powered adapter that compensates for the fact that the connections between the thermocouple and the rest of the system are not at 0°C. When the battery in the compensator starts to die, temperature starts to drift downward.
For the past 5 days, the monitored temperature of our water system has been slowly dropping. The water chiller on the supply side shows a constant temperature, however.
I finally figured out the problem. Both monitor thermocouples are connected to the computer that I'm using as a data logger by a battery-powered adapter that compensates for the fact that the connections between the thermocouple and the rest of the system are not at 0°C. When the battery in the compensator starts to die, temperature starts to drift downward.
