Thanks Fausto,
No, The data rate has been set to 5 Hz for data collection. Should this not be the case?
I do not have calibration information on our other temperature measuring devices. But the Onset Hobo Logger and our EasyView 10 match temperatures. Also we have an an anemometer with a temp readout, and this matches the other two at ambient temperature (within tenths of a degree).
After one of four methods stick out, the thermocouples of our dataloggers were swapped and the issue remained with the USB-2416 datalogger and not the thermocouples themselves.
My statement "the USB-2416 will fluctuate and not be correct". I am refering to the temperature seeming to decrease for a period of time before increasing to an incorrect final temperature. This is not what happens during this test, where heat is added to an area with uniform temperature.
My procedure for the setup previously mentioned is as followes:
The test's intent is to compare relative insulative properties of many types of insulation and insulation applications.
The room in wich the test is performed is insulated and has no active climate controll ( no fans, blowers, motors). Initial temp of the room for all trials is 73° F ± 2° F
The box is sealed with a lid using door seals and tape and thermocouples are suspended midway between the top and bottom of the box.
Thank you,
Charles