multi EA 5100
Troubleshooting
119
13.15 Device faults on the carbon detector
Error
Possible cause
Remedy
Analog values exceeding
values range (display in
the Status analyzer win-
dow)
¡
Analog values outside
of operating range
¡
Check the gas con-
nection to the basic
module
¡
Check the gas quality
¡
Check the analog val-
ues by performing a
component test: Sys-
tem menuComponent
test
¡
NDIR detector faulty
¡
Inform customer ser-
vice department
13.16 Analytical problems during TC, EC/OC determination
Error
Possible cause
Remedy
Scattering measurements
¡
Inhomogeneous sam-
ple matrix or sample
matrix containing
particles
¡
Warm up cold sam-
ples
¡
Homogenize sample
before analysis
¡
NDIR baseline drift
¡
Unfavorable integra-
tion criteria: Integra-
tion canceled to early
¡
Check settings
¡
Increase the maxi-
mum integration
time
¡
Sample unsuitable for
vertical operation
mode (droplet forma-
tion)
¡
Use the horizontal
operation mode
¡
In vertical operation
mode: Quartz wool
not present or at the
wrong position in the
combustion tube
¡
Check the position of
the quartz wool, ad-
just as necessary
¡
Sample evaporates
before dosing
¡
Use a cooled sampler.
¡
Sample too viscous
too be drawn in with-
out air pockets
¡
Use the horizontal
operation mode and
dilute the sample, or
dose directly as a
solid.
¡
Inhomogeneous sam-
ple or sample con-
taining particles
¡
Homogenize sample
Low results
¡
CO
2
concentration
outside of the operat-
ing range of the NDIR
detector
¡
Reduce sample vol-
ume/amount
¡
Dilute samples
