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ASX-112FR Autosampler Operator's Manual
Chapter 3: Installing the Autosampler
Connecting the Autosampler to an Analytical
Instrument
You can connect the autosampler directly to a sample introduction peristaltic
pump and then to the ICP-MS or to a sample introduction device, such as the
CETAC Aridus II or Aridus3 Desolvating Nebulizer System. To do so, complete
the following steps:
Determine the free length of the sample probe tubing you need, add 10
centimeters, and cut the free end of the sample probe to length.
1
Determining the free length includes allowance for movement of the Y-arm in
the X, Y, and Z axes. The additional 10 centimeters provides a service loop for
unrestricted sample probe motion.
Excessively shortened sample probe tubing is not repairable and must be
replaced.
Connect the free end of the sample transfer tubing to the inlet of the analytical
instrument's peristaltic pump tubing.
2
The free end may be connected directly to the ICP-MS nebulizer. If the CETAC
C-Flow PFA nebulizer is used (the free end acting as the sample probe for the
ASX-112FR) then the nebulizer may be installed directly into the Aridus II or
Aridus3 PFA spray chamber or the host ICP-MS spray chamber.
Connect the ASX-112FR Autosampler to the Host
Computer
Instrument control software on the ICP-MS host computer controls both the
analytical instrument and the autosampler. You cannot operate the
autosampler until you establish a communications interface between the
autosampler and the host computer. It is through this interface that the host
computer directs the operation of the autosampler. The autosampler supports
the following communications protocols:
The serial (RS-232) protocol is the standard configuration. There are two
RS-232 serial ports on the autosampler, and a serial interface kit is shipped
with the autosampler.
The parallel (IEEE-488) protocol is less common than the serial
configuration. An IEEE-488 interface kit is available as an optional
accessory to the ASX-112FR.
The USB interface is an optional configuration. A virtual COM port is
created when using the USB and therefore, the connection looks like a
standard RS-232 serial port to the host PC software.
NOTE:
Although the autosampler supports several communications protocols, the host
computer governs which protocol is used. To determine which protocol is
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