Endress+Hauser Analytik Jena multi EA 5000 - Device Faults on the Coulometric Sulfur Detector; Analytical Problems During Coulometric TS Determination

Troubleshooting multi EA 5000
120
Error Possible cause Remedy
¡ 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 ¡ Incomplete SO
2
for-
mation due to exces-
sive sulfur content
¡ Reduce sample size/
amount
¡ Dilute sample
¡ Metallic cations in
the sample lead to
sulfur salt formation
¡ Dilute samples, if
possible
Results too high ¡ Excessive halogen
and nitrogen con-
tents disrupt TS de-
termination
¡ Nitrogen: Use MPO
technology
¡ Dilute samples, if
possible
¡ Incomplete sample
incineration (pyroly-
sis products)
¡ Use a suitable com-
bustion mode or
sampler, clean device
before continuing
work
13.13 Device faults on the coulometric sulfur detector
Error Possible cause Remedy
Stirring not working ¡ Module not switched
on
¡ Switch on the module
¡ No stirrer rod in the
measuring cell
¡ Insert stirrer rod in
the measuring cell
¡ Stirrer rod faulty ¡ Replace stirrer rod
¡ Magnetic stirrer
faulty
¡ Inform customer ser-
vice department
13.14 Analytical problems during coulometric TS determination
Error Possible cause Remedy
Scattering measurements ¡ Sample unsuitable for
vertical operation
mode (droplet forma-
tion)
¡ Use the horizontal
operation mode