The major difficulty in doing these
studies is the avoidance of thermocouple wire hang-ups. Thermocouples must
be long enough to be transported through the entire tunnel. A special harness
for thermocouple wires should be constructed for feeding these wires into and
throughout the tunnel.
Repeatability of the thermal process must be demonstrated during these
studies. Peak temperature readings should remain within ±10°C across the belt
for at least three replicate runs.