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Site Preparation
Assembling the gas plumbing
16
Carrier gas miser
A carrier gas miser reduces the use of carrier gas during off•hours.It
reduces two channels of carrier gas flow to a low purging rate during
off•hours,without disturbing the pressure regulator or flow controller
settings.
CONSERVE
FULL
CONSERVE
FULL
FLO
W
A
5890
FLO
W
B
Carrier Gas Miser
Making pipe thread connections
Avoid pipe thread connections if possible. If they must be used, seal them
with Teflon tape. Do not use
pipe dope
to seal the threads; these
mixtures contain volatile materials that will contaminate the tubing.
Teflon tape is available in two grades. The less expensive
hardware
store
grade contains a small amount of volatile material. In most cases
this does no harm, but it will interfere strongly (noise, elevated baseline,
reduced sensitivity and linearity) with electron capture detectors. An
instrument grade (the name may vary) has had these volatiles removed.
The better grade tape is recommended for all chromatographic fittings.
Содержание HP 5890 II Plus Series
Страница 1: ...Chemical Analysis Group 5890 Gas Chromatograph 5890 Series II Site Prep Info Document A15282 ...
Страница 2: ...Site Prep Installation Manual HP 5890 Series II and HP 5890 Series II Plus ...
Страница 6: ...1 Site Preparation ...
Страница 19: ...This page intentionally left blank ...
Страница 20: ...2 Installation ...