CETAC M-7600 Mercury Analyzer Operator's Manual

CETAC QuickTrace M-7600 Mercury Analyzer
Chapter 5: Maintaining the Mercury Analyzer
Adjusting the Lamp Current
The lamp current can be adjusted using a potentiometer on the back of the
instrument.
Note that the effect of lamp current on data quality (absorbance and noise) is
typically minimal when a lamp is new. As the lamp ages, the lamp current will
automatically adjust to maintain constant emission intensity reaching the
EOFM filter/detector.
A new lamp needs a minimum of a 30 minute warm up time before final
adjustment. After installation of the new lamp, the lamp current will
automatically return to a value similar to the initial set up value.
1 Make sure the mercury analyzer is turned on and that it is connected to the PC.
2 Move the PC's display so that you can see it while you are behind the mercury
analyzer.
3 Exit the QuickTrace software, if it is running.
4 Run the M-7600 Lamp Current Configuration Tool. On the taskbar navigate to
Start | All Programs | CETAC QuickTrace | M-7600 Lamp Current Configuration
Tool.
5 Click Search for Analyzers.
Figure 5-26
Searching for the Analyzer.
6 Select the analyzer (if more than one is found) and click Connect.
If you see an “analyzer in use” error, double-check to make sure that the
QuickTrace software is not running.
7 Allow 30 minutes for the lamp to warm up.
8 While the lamp is warming up, remove the LAMP ADJUST access panel on the
back of the instrument.
9 Click Check Lamp Current.
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