ELOG CARME

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

CARME

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Entry time:

Sun Sep 13 08:06:25 2020

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Sun 13 Sep 08:06

Baking reached 93 C yesterday afternoon at 16:18 and paused as a result of a percieved temperature gradient in
the octagon. 
See attached.

Left system overnight to check whether octagon gradient was going to equilibrate via convection. 
No changes this morning.
Thermocouple 1-8 labeled "Octagon (side)" likely is not in thermal contact with the octagon. 
It appears to have a temperature lower than room temperature. Possibly sits outside the tent? Gradient will not
decrease with time.

Temporarily overrode automatic mode, set temperature to 100 C, restarted automatic mode. Will keep monitoring.

Sun 13 Sep 10:00

Vessel reached 100 C, no gradients. All OK, except octagon gradient (ignoring).
Manually increased temperature to 110 C. Restored automatic mode.

Sun 13 Sep 12:00

Baking stopped automatically at 10:30 due to CJC temperature (aka room temperature 2) in TC-08 Picolog 2
exceeding 40 C.
Max operating temperature of picolog TC08 is 50 C, and accuracy is lost above 30 C.
https://www.picotech.com/data-logger/tc-08/usb-tc-08-specifications

Stopped baking. Removed thermocouple 1-8 "Octagon (side)" from Octagon gradient calculation and recompiled.
Restarted manually at T = 80 C

Please move picolog away from the tent tomorrow, and we can then increase temperature. Tent does not need to be
opened.

Sun 13 Sep 19:00
Vessel temperature at 80 C stable. 
Other temperatures stable. 
Leaving at 80 C overnight.

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Attachment 1:

20201309_0806_ctrl.png Original size: 820x996

Attachment 2:

20201309_0806_plot.png Original size: 1917x1001

Attachment 3:

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