Reaching The Melting Point; Starting The Melting Point Analysis - kruss M5000 User Manual

6. Starting the melting point analysis

The last melting point determined will be saved until the
device is turned off or a new melting point analysis is
started.
6.2 Express heating-up
After selecting the starting temperature, express heating
up will automatically be started after pressing the start
key. The current oven temperature will be displayed.
After reaching the selected starting temperature (the
device decreases heating-up speed approx. 3 °C before)
a signal tone will be heard for about 5 seconds.
Express heating up can be cancelled by pressing one of
the arrow keys. The selection of the target temperature
(see chapter 5.2) is started with the arrow keys. The fan
will not be activated! The printing key has no function.
6.3 Slow heating-up
Slow heating-up means approx. 1 °C per minute.
The process is automatically started by inserting a filled
capillary tube when the selected starting temperature
has been reached. The melting process is displayed
in °C and % from the beginning of melting until the
melting-point is reached. The current target temperature
of the melting-oven is displayed.
In case the melting point is not reached within 30 min,
the slow heating-up process will be interrupted by time-
out and and an internal error value will be saved as
melting point.
By pressing the arrow keys, the process can be inter-
rupted at any time. The device will then jump to menu
item 5.2 selection of target temperature. No fan will be
activated! The printing key has no function.
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express heating
Temp. 78.8 °C
1 °C/min 2 %
Temp.121.3 °C

7. Reaching the melting point

A signal tone will sound three times when the melting
point has been reached.
The determined melting point will be shown on the
display. The device will automatically set the melting
oven back to the selected starting temperature. During
this time the term "auto" will flash up in the lower right
corner of the display.
When the starting temperature has been reached once
more, the signal tone will sound and the term "auto"
will remain in the lower right corner of the display.
If a new capillary tube is inserted during the time the
term "auto" is flashing up, no error message will be
displayed. As soon as the starting temperature has been
reached, the next melting point analysis process will
immediately be started.
If a new melting sample is inserted within 5 min, the
measuring process will be repeated.
If one of the two arrow keys is pressed within 5 min, the
selection of the target temperature will be activated (see
chapter 5.2) No fan will be turned on!
If the printing key is pressed within 5 min, you can print
on the optionally attached printer. This process can be
repeated as often as you want.
If no keys are pressed for about 5 min, a time-out
will occur and the device will automatically jump to
the starting display. The last melting point remains in
memory and can be displayed at a later time by press-
ing the printing key.
7. Reaching the melting point
melting point
121.9 °C auto
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