Operating instructions

3. Operating instructions page 19
Mercury Instruments UT-3000-E_V2.11.docx 31.07.12
Analytical Technologies
3.4.3 Auto Range Volume (only for Natural Gas / Tedlar Bag Version)
If Auto Range is activated the sample volume will be automatically adjusted according to the
mercury concentration of the sample. After Start Measuring the smallest possible sample volume
is selected automatically. If the absorbance signal is low, the sample volume will be increased
after each measurement until the absorbance is within the optimum range.
3.5 Start Measuring
Press in the Main Menu F1-Start Measuring. Now the analyzer automatically performs a
cleaning procedure and then starts sampling. After sampling is completed following steps will be
performed:
zeroing - trap heating - trap cooling – trap cleaning – trap cooling - sampling .
If the first measurement cycle has been completed, the system performs automatically the next
measurement cycle unless ESC is pressed or the instrument is switched off.
The result of the last measurement is displayed numerically at the centre of the bottom line, up to
5000 measurement results are displayed as bar graph. The time axis of the screen can be scrolled
with the F3 and F4 keys.
F IGURE : S CREEN DURING SAMPLING . T HE HISTORY OF
READINGS IS DISPLAYED AS A BAR GRAPH . T HE RESULT OF THE
LAST MEASUREMENT IS DISPLAYED IN A BOX ON THE BOTTOM
LINE .