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DIY Test Equipment

1 Post authored by: rsc
I work with small thermocouples and Hot-Wire/Hot-Film devices in my lab.  To test and calibrate these devices requires some crazy equipment sometimes. Try to imagine blowing air on a thermocouple that's in a chain of thermocouples 1mm apart without disturbing the ones on either side. Hot-films are very sensitive to the air flow direction, and it's difficult to move a big fan around keeping the air flow at accurate angles. So, after trying straws taped to little fans and other sometimes s ...