The syringe plunger is held to the plunger holder which is also connected to the ball screw drive. The ball screw drive is incorporated with step motor. Then the plunger moved within the syringe barrel driven by the step motor. The plunger block is detected by encoder.

The full stroke of the syringe drive is 60mm, divided into 6000 steps, resolution is 1 step.

The syringe plunger is held to the plunger holder by a lock screw. The syringe barrel attaches to the pump valve by a 1/4-28 fitting.

Refer to Figure 2-2 for the components of the syringe: