Function and design
multi N/C pharma HT
26
3.2
Additional options for the analyzer
Autosampler
The following autosamplers are available for the analyzer:
¡
AS vario with various tray sizes
¡
AS 10e for 10 samples
¡
AS 21hp for 21 samples
¡
EPA Sampler with piercing function
Integrated solids module
The analyzer can be equipped with a Swab Test module to analyze small amounts of
solid samples.
The module consists of a special reactor and a lock with manual feed. The model is in-
serted into the combustion furnace. During digestion of solid samples, temperatures of
up to 950 °C are achieved. The digestion is supported by catalysts.
3.3
Function and measuring principle
The analyzer is a compact, high-performance device for determination of the content of
organic bound carbon and/or the total nitrogen content in aqueous samples.
Halogen
trap
NDIR
detector
NO
detector
Flowmeter
PC
Controls
display
Data printout
Data export/
import
Water traps
Phosphoric
acid pump
Condensate
pump
TIC condensate
container
Dryer
Combustion
furnace
Waste
optional
Sample
Syringe pump
TIC
Figure 18Principle of operation
The samples are digested at high temperatures in the presence of special catalysts. This
allows even very stable and complex carbon and nitrogen compounds to be converted
quantitatively.
