Carbon analysis with the TOC module
multi EA 5000
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Figure 62Rear of the TOC detector
1 "External (out)" connection socket
(25-pin)
2 "C-NDIR" interface cable connection
(9-pin)
3 "External (in)" interface cable con-
nection (25-pin)
4 "Sample in" measuring gas inlet
5 "Sample out" measuring gas outlet
6 "Waste" waste outlet
7 Power switch, fuse holder, power
connection
8 Holder for the NPOC purging hose
Communication with the basic module is performed via a 2 interfaces:
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The interface for the 9-pin interface cable is labeled "C-NDIR".
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The interface for the 25-pin interface cable is labeled "External (in)".
The "External (out)" interface is not used.
The hose connection are required to be factory-prepared for TOC measurement (in wa-
ter samples) The "Sample in" measuring gas inlet is connected with hose 82.
The purged condensate or waste solution from TIC determination is drained via the
"waste" outlet on the rear of the module. For this, a waste hose is connected to the con-
nector "waste" and inserted into a waste container (included in the scope of delivery).
NPOC
The connection for the NPOC purging gas is located on the rear of the basic module and
is labeled with "out ABD". The purge hose is connected to the connector via a FAST con-
nector. The purge hose is fastened to the holder on the rear of the detection module
with the provided connector. From there, a hose with an outer diameter (AD) of 1.6 mm
continues to the holder on the sampler. For manual sample preparation, the hose can be
immersed directly in the sample.
TC, EC/OC
The detection module can be used to determine TC and EC/OC.
TC determination can be performed in both the multi-purpose combustion tube (stan-
dard tube) and the special EC/OC combustion tube.