TSI Incorporated 3480, Руководство пользователя

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3–1
C H A P T E R 3
C o n t r o l s , I n d i c a t o r s ,
a n d C o n n e c t o r s
Use the information in this chapter to familiarize yourself with the
location and function of controls, indicators, and connectors on the
Model 3480 Electrospray Aerosol Generator.
This chapter is organized into three sections describing aspects of
the instrument: Front Panel, Back Panel, and Internal Components.
F r o n t P a n e l
The main components of the front panel are shown in Figure 3-1.
They include: the voltage and current LED displays, the voltage
adjustment knob, the power and high-voltage LED indicators, the
CO
2
and air rotameters, the pressure regulator and gauge, and the
pressure chamber. In addition, the viewing window and ionizer
retainer are integrated with the cover and are included in this
section.
LED Displays
There are two LED displays on the Model 3480: Voltage (kV) and
Current (nA).
‰ The voltage LED display is a measure of the high voltage applied
to the platinum wire, which charges the liquid in the vial and
capillary. A positive high voltage is standard, but a negative
high-voltage module is available in place of or in addition to the
positive high-voltage module.
‰
The current LED display is a measure of the status and stability
of the Electrospray Aerosol Generator. See Chapter 4,
“
Operating the Electrospray ” for more information on how the
current reading aids in determining the status of the
Electrospray, and Appendix B, “
Theory of Operation ” for more
detail on how the current is measured.