multi N/C 2100S (duo, pharma)
Function and design
19
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.
The needle valve for setting the NPOC purge flow is available in the multi N/
C 2100S pharma analyzer, but it is not used.
Figure 6 Setting the NPOC purge flow
Condensate pump
The condensate pump pumps the condensate or the waste solution from TIC determina-
tion out automatically after each measurement. The condensate pump is located behind
the front doors next to the halogen trap.
Figure 7 Condensate pump