System design
34 Edition 01/2016 multi EA 4000
Measuring method TIC
Detection NDIR (coupled with VITA method)
Sample volume up to 3000 mg (TC) or 50 mg (TIC)
Connection 110 – 230V AC, 50/60 Hz
Protection T 2 A H
Typical average power consumption 20 VA
Interface to the C/S module RS 232
4.5.2 Layout
TIC reactor
The quartz tube is attached to the ceramic combustion tube with a coupling. A knurled ring
with screw thread clamps the TIC reactor and seals the connection by pressure on the inter-
nal sealing rings. The reactor includes the connections for the acid supply, the measuring
gas outlet and the oxygen supply. By adding the oxygen at the reactor inlet a gas airlock is
implemented that prevents the measuring gas from escaping through the open inlet. The
ceramic boats filled with samples are transferred to the reactor with the specially adapted
sampler FPG 48.
1 holder at the multi EA 4000
2
acid supply via ceramic cannula
measuring gas outlet
4 inlet for oxygen supply
5
insert for ceramic boats
Fig. 19 TIC reactor
Pneumatics/hose system
The connection between the individual components is made with labeled hoses. The hose
diagram can be found in section "Installing the automatic TIC solids module" p. 132.
Hose pumps are used for the supply of the phosphoric acid and removal of the condensate.
The phosphoric acid pump transports 40% phosphoric acid to the TIC reactor. Whilst the
sample boat is moved continuously through the sampler FPG 48 towards the multi EA 4000,
the sample is evenly diluted with phosphoric acid. Via the condensate pump the condensate
is automatically pumped off after each measurement.
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