Gow-Mac 580 series, Operating Manual

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Series 580 TCD Gas Chromatograph
September 2017, Rev. 5 51
Section 8
Options & Accessories
The following are options and accessories that your Series 580 GC may (or may not) have been
equipped with:
A. 10x Signal Amplifi er (Option 407)
The 10x Signal Amplifi er is a precision single, unifi ed circuit designed for the acquisition of data in
applications where there are less than desired operating conditions or where there is a need for
high sensitivity.
The amplifi er features a combination of high linearity, high common mode rejection, low off set
voltage drift, and low noise gain applications.
B. Diff erential Flow Controllers (Option 402)
The Flow Controller controls low gas fl ows at constant mass fl ow rates with changes in
downstream pressure. It maintains a preset diff erential pressure across a stratifi ed (laminar) fl ow
element. With a constant upstream pressure, fl ow is varied by changing the pressure drop across
the stratifi ed fl ow element. Once the diff erential pressure is set, it is maintained regardless of
changes in the down stream pressure.
C. Capillary System
Capillary chromatography provides the utmost in GC performance. Advantages to using capillary
techniques include high effi ciencies about 4000 plates per meter versus about 500 plates per
meter for packed columns- and shorter retention times with better resolution.
1. Columns
The SERIES 580 capillary GC is a direct, on-column injection system. Glass adapters with
fi ttings are provided to install the capillary column (0.53 mm i.d. or larger).
When installing a new capillary column, the column should be placed into the detector as far
as it will go. The other end of the column should be placed into the glass adapter
approximately 3/4”.
2. Injecting Samples
When injecting samples, make sure to insert the syringe needle about 2” through the
injection port. This will ensure proper injection technique.