Table of Contents
Advertisement
Troubleshooting
Detector-Related Problems
Table 3. Troubleshooting detector-related problems (Sheet 1 of 4)
Symptom
1. Spikes on baseline. a. Continuous gas bubbles in the flow cell. a. Degas the mobile phase. Connect a
Thermo Scientific
This chapter contains helpful information for troubleshooting possible detector and
chromatographic system problems. The information is organized in a table of symptoms,
possible causes, and remedies. Because many of the problems attributed to the detector might
actually be due to other components in the chromatographic system, references and potential
solutions to these types of problems have also been included.
Contents
•
Detector-Related Problems
•
Log Entries
Table 3
lists detector-related problems along with suggestions for corrective action.
Cause
b. Immiscible solvent bubbles following
mobile phase changeover.
c. Electrical interference.
d. Extremely large fluctuations in voltage
on POWER line.
Remedy
backpressure device to the flow cell
(check backpressure rating).
b. Flush the flow cell with 2-propanol
followed by mobile phase.
c. Check the electrical lines for good
connections and/or interference from
broadcast radiation. Check for ground
loops.
d. Remove systems (for example, ovens)
that cause voltage fluctuations. Isolate
the detector to a "quiet" circuit, or use
an uninterruptible power supply.
Surveyor PDA Plus Detector Hardware Manual
7
97
Advertisement
Table of Contents
