Apr. 8th, 2009

revchris: (Default)
We'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.

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revchris: (Default)
revchris

June 2010

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