Owner manual

3-22 Component Description
3.7.1 Mechanical Height Sensor
The Mechanical Height Sensor (Figure 3-12) uses a retractable contact probe to locate the surface height
of the workpiece. The probe triggers an optical sensor that sends a signal to the Computer where the
PMAC motion controller and Fluidmove software automatically record Dispensing Head height. This
ensures a uniform distance between the tip of Dispensing Valve needle or nozzle and the workpiece
surface.
Periodically, the contact probe becomes damaged and must be replaced. Refer to Section 6 – Maintenance
for details.
3.7.2 Laser Height Sensor (Option)
The non-contact Laser Height Sensor (Figure 3-13) provides high-speed dispense height measurement for
delicate substrates, hybrids, and integrated circuits that may be compromised by tactile sensing. In
addition, non-contact height sensing eliminates concerns regarding flex, vibration, and substrate
contamination.
WARNING! Refer to 2.9 Laser Radiation for important safety information regarding the laser
height sensor.