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Optional Equipment
Ammonia Scrubber
Ammonia Scrubber
Teflon Particulate
Ozone Particulate
NO
-to-NO Converter
2
I/O Expansion Board
Assembly
Terminal Block and
Cable Kits
9-2
Model 42i Trace Level Instruction Manual
The ammonia scrubber is mounted internally and removes ammonia from
the sample air.
A 5-10 micron pore size, two-inch diameter Teflon® element is available for
the Model 42i Trace Level. This filter should be installed just prior to the
Filter
bulkhead. When using a filter, all calibrations and span checks
SAMPLE
must be performed through the filter.
The ozone particulate filter minimizes the potential for contamination of
the ozonator by trapping any particulate matter before passing through the
Filter
ozonator.
The Model 42i Trace Level includes a Molybdenum NO
as standard equipment.
The I/O expansion board provides six analog current output channels (0-
20 mA or 4-20 mA) and eight analog voltage inputs (0-10V). The DB25
connector on the rear panel provides the interface for these inputs and
outputs.
The optional terminal block and cable kits provide a convenient way to
connect devices to the instrument. These kits break out the signals on the
rear panel connector to individual numbered terminals.
Two types of terminal block and cable kits are available. One kit is for the
DB37 connectors and can be used for either the analog output connector
or the relay output connector. The other kit is for the DB25 connector and
can be used for the optional I/O expansion board. For associated part
numbers, refer to
Each kit consists of:
one six-foot cable
●
one terminal block
●
one snap track
●
"External Device Connection
-to-NO converter
2
Components" on page 7-6.
Thermo Fisher Scientific
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Troubleshooting
