multi EA 4000
Fault removal
141
8.6.5
Measurements in pyrolysis mode (EC)
Low results of elementary carbon (after pyrolysis)
Cause
Solution
Waiting period for purging oxygen by argon in the com-
bustion tube chosen too short
The waiting period after changing from oxygen to argon
supply should be min 60 s.
High results of elementary carbon (after pyrolysis)
Cause
Solution
Pyrolysis period selected too short
The pyrolysis period should be min 3 min to ensure that
all organic compounds are fully digested and purged.
Pyrolysis temperature chosen too high
At temperatures above 1000 °C soot is increasingly
formed from organic compounds (plastic) through "cok-
ing" and is also detected as elementary carbon in stage
2. The optimum furnace temperature for pyrolysis
measurements is 850 °C.
NOTICE! Where possible limit the operating period of
pyrolysis measurements (with T = 850 °C), because it
shortens the service life of the heating elements.
Summary of Contents for Analytik Jena multi EA 4000
Page 1: ...Operating Manual multi EA 4000 Elementary analyzer C S and Cl solids analysis...
Page 50: ...Commissioning multi EA 4000 50 Figure 32 multi EA 4000 C S Hose diagram...
Page 52: ...Commissioning multi EA 4000 52 Figure 33 multi EA 4000 Cl Hose diagram...
Page 54: ...Commissioning multi EA 4000 54 Figure 34 multi EA C S Cl for C S measurements Hose diagrams...
Page 55: ...multi EA 4000 Commissioning 55 Figure 35 multi EA 4000 C S Cl for Cl measurements...
Page 57: ...multi EA 4000 Commissioning 57 Figure 36 Automatic TIC solids module Hose diagrams...
Page 58: ...Commissioning multi EA 4000 58 Figure 37 multi EA 4000 C S with automatic TIC solids module...
Page 61: ...multi EA 4000 Commissioning 61 Figure 39 multi EA 4000 C S Cl with man TIC solids module...
