multi N/C pharma HT
Function and design
17
3.1.2
Hose system
Hose diagram
The connection between the individual components is made with labeled hoses. The
numbers and letters circled in the hose diagram correspond to the labels on the hoses in
the analyzer.
Sample
NPOC flow
monitoring
Gas box
Needle valve
Needle valve
Water traps
Furnace
TIC vessel
Condensate pump
"waste"
connection
V2
Flow monitoring
"CLD" connection
Phosphoric acid pump
Phosphoric acid
7
9
AA
35
AB
BB
14
13
4
3
2
5
AD
12
11
10
1
AC
NDIR
Halogen trap
Water traps
Drying
V3
Figure 4
Hose diagram
Components for flow adjust-
ment
The analyzer automatically sets the carrier gas flow and controls the inlet flow via an
MFC (Mass Flow Controller). An MFM (Mass Flow Meter) measures the carrier gas flow
at the device outlet. This automatically checks for leaks. The results are displayed in the
multiWin software in the System state window. A water trap protects the gas box from
the return of wet combustion gases.
The NPOC purge flow can be set via the needle valve on the gas box. The needle valve
can only be accessed when the left side wall has been removed. The NPOC purge flow is
measured with an MFM and displayed in the System state window.