[Homeroast] Quest M3

raymanowen at gmail.com raymanowen at gmail.com
Sun Oct 24 06:16:46 CDT 2010

Dial-type thermometers are most accurate at mid scale. To calibrate them,
you set Zero and Full scale at 10% FS and 90% FS. The two dials I saw in a
QM3 image showed several degrees disparity at the apparent room temperature.
(No indication that the machine had been recently shut down and was cooling
from operating temperature)

At least, the operator would never expect the two measured locations to read
the same in operation. But when the machine is cold... And turn the
thermometers so that the temperature of interest is at 12:00, for ease of

Other than being the rong scale, rong orientation and rong calibration,
maybe it's OK for some roasters.

Cheers, Mabuhay -RayO, aka Opa!
Persist in old ways; expect new results - suborn Insanity...

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