Metrohm 872 Extension Module - Manual (Page 9)

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1 Introduction
872 Extension Module IC Module
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1 Introduction
1.1 Instrument description
Existing 850 Professional IC instruments can be expanded to include addi-
tional functions by means of 872 Extension Modules. Every 850 Professio-
nal IC instrument can be supplemented with up to 3 extension modules.
The 872 Extension Module IC Module allows to extend an 850 Profes-
sional IC instrument by another IC Module complete with high pressure
pump, purge valve, inline filter, pulsation damper and injection valve.
The 872 Extension Module IC Module can be used wherever an addi-
tional IC Module is necessary.
With the 872 Extension Module IC Module, a one-channel low pressure
gradient instrument can this way be extended to a two-channel AnCat
instrument with low pressure gradient. All instruments with sample prepa-
ration can be extended to two-channel systems as well.
In a system with photometric detection with a 886 Professional Thermo-
stat/Reactor as column holder and thermostat and an 887 Professional
UV/VIS Detector, it is also possible to use the 872 Extension Module IC
Module for conveying reagents.
The extension module is operated with MagIC Net software, just like the
IC instrument. When it is connected to an 850 Professional IC instrument,
MagIC Net recognizes the extension module automatically and checks its
functional capability. It controls and monitors the unit IC instrument –
extension module, evaluates the measured data and administers it in a
database.
The 872 Extension Module – IC Module comprises the following com-
ponents:
Eluent degasser
The eluent degasser removes gas bubbles and dissolved gases from the
eluent. For degassing, the eluent flows into a vacuum chamber through a
special fluoropolymer capillary.
High pressure pump
The intelligent and low pulsation high pressure pump pumps the eluent
through the system. It is equipped with a chip on which its technical spec-
ifications and "life history" (operating hours, service data, ... ) are saved.