![Electrothermal IA 9100 Instruction Book Download Page 21](http://html.mh-extra.com/html/electrothermal/ia-9100/ia-9100_instruction-book_2386099021.webp)
Page 21 of 40 M8144
Issue 2.0
F1 Operational mode.
7.6.3.
Setting the IA9300 to perform a melt.
You are now asked to ‘Set the Temperature’.
Use the key pad to set the plateau temperature. Refer to paragraph 7.2.1 Principals of
Operation. Once the desired set temperature has been entered press the return key.
7.6.4. You are now asked to set the ramp rate. The default is 1.0°C/min. To change the ramp
rate use the keypad to enter the new ramp rate value. Press the return key to accept the
default or accept the new ramp rate value.
Note:
The last used ramp rate setting will be remembered and recalled for subsequent
melts. If the IA is powered down and then powered up again the default value of
1.0°C/min will be reinstated.
7.6.5. You are now given the chance to enter a ceiling. The ceiling temperature should only be
set if it is critical to your sample so that it must not be heated to above a certain
temperature. The default is 400°C. If there is no requirement for setting a ceiling
temperature press the return key. The IA oven will commence heating to the set point
temperature.
Note:
The last used ceiling setting will be remembered and recalled for subsequent
melts. If the IA is powered down and then powered up again the default value of 400°C
will be reinstated.
Note:
The ceiling temperature cannot be set to less than 5°C of the set point
temperature. If you attempt to make an illegal setting the IA will automatically default to
5°C above the set point temperature.
7.6.6. As the IA heats up to the plateau temperature you will see four asterisk appear across
the low half of the display screen indicating the closeness of temperature to the set
point temperature. When the set point temperature has been reached the IA will beep
three times. It is recommended the user allows time for the oven temperature to
stabilize before commencing with the ramp heating.
7.6.7. Insert you chemicals sample and allow time for the oven to re-stabilize . Press the
return key to commence ramping.
7.6.8. When the first melt is observed press the return key to register the melt. Then to identify
the oven position press either 1 for left, 2 for central or 3 for the right hand oven
position. Two melts may be recorded for each oven position. You will observe a figure
M1 appearing next to selected oven position indicating that a melt has been saved to
that oven position. A figure M12 will indicate a second melt has been saved against the
selected oven position. In addition a red LED indicating the saved melt oven position
can be observed through the viewing lens.
See paragraph 7.2.3 ‘Determination of Melt
point’. Press the return key every time a melt is observed. When sufficient melts have
been recorded,
press the ‘Fn’ to move out of melt storage mode.
7.6.9. You are now asked if you wish to turn off the oven. Press key 1 for yes or key 2 for no. If
you are going to perform subsequent melts then leave the oven on. It will reset back to
the previously set plateau temperature.
7.6.10. You are now asked if you wish to store the melt data. Press 1 for yes or 2 for no. If
the answer is yes you will be asked to enter a batch number. Select a batch number
between 1 and 500 and press the return key. After making a stored data decision you
are taken to the recorded data option screen.