BÜCHI Labortechnik AG
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2.3.2 BACK PANEL (FIGURE 2.2)
Figure 2.2: Model 3300 ELSD Back Panel
1. Signal Output: The signal cable included with the unit is
connected to the SIGNAL OUTPUT port on the back
panel of the unit and is used to send the analog signal to
the data collection device.
2. RS-232: This port is currently reserved for service tech
functions only.
3. USB Host: A pen drive (not included) can be inserted
into this port for file importing/exporting and software
upgrades. Also for possible future pc control capabilities.
4. USB Device: This port is currently reserved for service
tech functions only.
5. Ethernet: This port can be used with the 3300 ELSD
Driver for Agilent ChemStation. This port is also used for
service tech functions.
6. 14-Pin Connector: Outputs TTL/contact closure signals
or accepts signals from peripheral equipment.
7. Exhaust Outlet: Nebulizer gas, mobile phase vapor, and
solute mist or particles produced during an analysis will
exit the detector through the EXHAUST outlet. The
exhaust outlet accepts the exhaust adapter and exhaust
tubing included with the unit, which must be then directed
to a fume hood.
8. Fan: Provides cooling airflow through the instrument. Do
not block.
9. Power Module: The power module contains a socket for
the incoming power cord. It also contains the main power
switch, which is used to turn the system power On/Off,
and the line fuse. The module is autoselecting for 85-
265V and contains a 5 Amp fuse.
10. Gas Inlet: The GAS INLET accepts the nebulizer gas
supply tubing. The inlet features a quick-connect port,
which requires no additional fittings. Gas pressure should
be regulated from 65 – 80psig.
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