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System design

multi EA 4000 Version 01.16 21

4 System design

4.1 Comprehensive overview

The analyzer multi EA 4000 is of modular design. The basic device (combustion unit) is

combined with one or several detector modules dependent on the task:

 Basic device

 Carbon and/or sulfur module (C/S module)

 Chlorine module (Cl module)

 TIC solids module (automatic or manual)

The change from C/S to Cl detection is possible without having to change the pneumatic and

electrical connections. The ceramic tube is replaced by a combustion tube from quartz glass

for this purpose.

The sample transfer to the combustion furnace is

 automatic using the sampler FPG 48 or

 manual using a manual feed.

The device system can be combined with scales with an interface to the control computer

transferring the sample volume for calculating the analysis results automatically.

The control electronics is located in a detector module in accordance with the basic configu-

ration.

 in the C/S module, if a C/S module is connected

 in the Cl module, if the analyzer has not been combined with a C/S module.

The control of the analyzer and the analysis of the measurements takes place via the control

and analysis software multiWin® installed on an external PC.

4.2 Basic device

The basic device of the multi EA 4000 consists of the following main components:

 Combustion system

 Pneumatic and hose system

 Components for measuring gas drying and cleaning

 Indicator and control elements, connections

4.2.1 Combustion system

The combustion furnace is a resistor-heated horizontal furnace for digestion temperatures up

to 1500 °C. A combustion tube is used as reactor. The carrier and combustion gas is sup-

plied via an open gas airlock to the inside of the combustion tube. Since the gas flow of the

carrier and combustion gas is greater than the intake flow of the measuring gas, the resulting

overpressure at the inlet of the combustion tube prevents the measuring gas from escaping

or ambient air from entering the combustion tube.

Analytik Jena multi EA 4000 User Manual

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