Electrothermal IA9300 - Principles of Operation; Operational Workflow and Data Logging

6
During operation the various parameters of the sample analysis are shown on
the liquid crystal display, and all the stages of the process are indicated by the
L.E.D. illumination or audible warning. The principles of the operation are as
follows:-
 Guided by knowledge of the expected melting temperatures of the
sample, a „Set Point‟ is established and its value keyed in (see figure
1).
 The oven temperature is driven to meet the „Set Point‟ at maximum
rate.
 After a short delay for the over temperature to stabilise at the „Set
Point‟, the ramp is established and selected.
 The temperature now increases linearly at the much slower ramp rate,
during which time the melt analysis takes place.
 The melting of the sample is observed and the temperatures registered
in the memory at the appropriate time.
 The temperatures (and for the IA9200 also the measuring parameters)
are now available for review on the display (and for the IA9300 & 9200
a hard copy recorded to be printed).
 The oven temperature may now be directed to a new „Set Point‟ if
required for the next analysis.