Chapter 2 Functional Description - Thermo Scientific HESI-II Probe User Manual

Functional Description
Thermo Scientific
The HESI-II probe produces charged aerosol droplets that contain sample ions. The HESI-II
probe accommodates liquid flows of 1 μL/min to 1 mL/min without splitting.
The removable components of the HESI-II probe are the end cover that is secured to the
probe body with socket head screws and the needle insert that screws into the probe body
(see Figure 3). The end cover includes the high voltage feedthrough and the sample inlet port.
The external components of the probe body include the grounding union holder, vaporizer
cable connector socket, probe sleeve with depth markers, and probe nozzle (see
Figure 4).
Figure 3. HESI-II probe removable components
End cover
Socket head screws
Needle insert
2
Figure 3 and
Probe body
Probe sleeve with
depth markers
HESI-II Probe User Guide 5