Control, Indicators, and Connectors 3–3
Indicators
There are three status LEDs on the Classifier: Power, Sheath Flow,
and High Voltage.
The green Power LED indicates that power is supplied to the
instrument.
The Sheath Flow LED indicates that the sheath flow is within
±0.05 L/min of its set point.
The High Voltage LED indicates that the High-Voltage module is
operating correctly. If the LED is blinking, this indicates that
the high-voltage module has been installed incorrectly.
Neutralizer Chamber
The Neutralizer Chamber allows a TSI Model 3077A/3077 Aerosol
Neutralizer to be installed in the cabinet to meet safety
requirements for radiation exposure. The neutralizer provides an
equilibrium charge on aerosols that enter the DMA.
Back Panel
As shown in Figure 3-3, the back panel has a variety of power and
data connections as well as a cooling fan.
AC Power Connector
The AC Power Connector accepts the line cord (supplied) to provide
AC power to the instrument. See “Power Connection
” in Chapter 2
for more information.
DC Power Input
The DC power connector is a quarter-turn quick-connect entry
point that allows the Classifier to be powered by a 22–26 VDC
(24 VDC nominal) 7A max. power source. This power could be
supplied by aircraft power or two 12 VDC automotive batteries in
series. Refer to Figure 3-4 for pin designations for this 24 VDC
power input port. Contact TSI for the adapter cable (TSI part
number 1035551) and instructions on using this power method.
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