WaveRIDER 161
APPENDIX C: Measurement Definitions
This section defines how each solder machine parameter is measured and or
calculated:
Figure C- 1: Sensor Placements
PREHEAT
Preheat Max Temp: The temperature of the Top Foil Thermocouple (Coupon Top) at
the time when the Speed Sensor hits the first solder wave (chip wave or main wave).
This records the change in temperature imposed by the preheat system on the top foil
of a typical circuit board.
Preheat Min Temperature:
The temperature of the Top Foil Thermocouple (T/C) at the
first data point taken after the start button is pressed. This records the starting
temperature of the top foil of the circuit board.
SPEED
SENSOR
SOLDER
SENSOR
TOP FOIL
SENSOR
BOTTOM FOIL
SENSOR
DWELL TIME
SENSORS
(C, B, A)
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