32 Wave Solder REFLOW TRACKER
Reflow Tracker’s Insight software identifies the thermocouples as follows:
• Thermocouples attached to the PCB are numbered 1–3.
• With a 6-channel logger, the leading-edge thermocouples are numbered 4–5 and
the rear thermocouple is number 6.
• With a 12-channel logger, the leading-edge thermocouples are numbered 4–11
and the rear thermocouple is number 12.
The Reflow Tracker system can also be used to profile the process without a pallet
by attaching thermocouples solely to a product or test-piece, as in reflow profiling.
Running a Wave-solder Temperature Profile
The process of running a wave-solder temperature profile is carried out using
Insight’s Wave Solder Wizard. A profile can be obtained in two ways:
• Wave with Pallet – Thermocouples are fixed to a flat pallet, on which the
logger is also mounted, and this passes through the oven.
• Wave – Using a standard assembly of logger and thermal barrier (and no
pallet), thermocouples are attached to a separate product or test-piece
which passes through the oven, as in reflow profiling.
For a Wave profile run (i.e. without pallet), note that Wave Solder analysis is
performed only on data from thermocouples on the underside of the PCB, i.e.
those which make contact with the solder wave. These thermocouples must be
specified.
Profiling method and (for a Wave profile) the thermocouple numbers used will
be most conveniently specified by use of a process file which you apply to the
profile data after the run has been performed (see below).
See the Insight software for an introduction to process files: press function key F1,
or select Help > Contents from the menu bar, and click the section
‘Process Files: Oven, Recipe, Product’.
Profiling method is specified by selecting the oven type in the process file or,
alternatively, in the Process Details dialog (Oven tab).
As well as in the process file, the thermocouples used can be specified in the
Process Details dialog (Recipe–Analysis tab) or in the Analysis Options dialog of
the Wave Solder analysis.
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