UNI-T UT3000 series Operations Instructions Page 67

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6. Maintenance
page 67
Mercury Instruments
UT-3000-E_V2.11.docx
31.07.12
Analytical Technologies
6.4 Troubleshooting
6.4.1 Unusual Measuring Peaks
An example for a non-typical peak is shown in the picture below.
The peak is more of triangular shape and the signal drops to negative values after the peak.
Figure: Example for an non-typical desorption peak
The reason may be precipitation in the tubing at the outlet of the GoldTrap (= tubing which
connects GoldTrap and optical cell, see picture below).
In this case it is recommended to replace the contaminated tubing.
Figure: Tubing at outlet of GoldTrap. The arrow indicates the
position where precipitation might occur.
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