Needle Parkstation - Agilent Technologies InfinityLab LC Series User Manual

1
Introduction
Operating Principle

Needle Parkstation

The needle parkstation comprises two main assemblies: needle drive and wash
port.
Figure 8 Needle Station
Needle-Drive
The needle movement is driven by a stepper motor connected to the spindle
assembly by a toothed belt. The circular motion of the motor is converted to
linear motion by the drive nut on the spindle assembly. The upper and lower
needle positions are detected by reflection sensors on the needle station
board, while the needle-in-vial position is determined by counting the motor
steps from the upper needle-sensor position.
Agilent InfinityLab LC Series Vialsamplers User Manual 23