14
20 minutes. Press ‘ENTER’ button to confirm.
When a delay has been selected, after the ‘START’ button has been pressed, a delay warning message will be
displayed
** D E L A Y **
‘MULTIMODE’
This programme is very useful for extending the time of sampling with the purpose of obtaining a more
representative environmental sample “in actual operating conditions”. The total air volume to be sampled is
aspirated with two or more sub volume aspirations (e.g.:1000 litres in ten runs of 100 litres at five minute
intervals).
Before entering ‘MULTI MODE’ you should decide:
(a) Total volume of air to be sampled onto the contact plate.
(b) Number of runs.
(c) Interval time between runs.
Switch on the instrument and wait until the main screen is displayed:
START FOR XXX
MM/DD/YY - HH:MM
Press the “
▼
” or “
▲
” arrows to reach the
MULTI MODE
MM/DD/YY - HH:MM
Press the ‘ENTER’ button, the interval time is displayed
INTERVAL TIME
05 MIN
Select the desired interval time between runs with the “
▼
” or “
▲
” arrows. The selectable interval values are 5, 10,
15, 20, 25, 30, or 60 minutes.
Press the ‘ENTER’ button to confirm the interval time, the numbers of runs is then displayed
NUMBER OF RUNS
20 NC
Select the desired number of cycles with the “
▼
” or “
▲
” arrows. The selectable values are 2, 3, 4, 5, 6, 7, 8,
9, 10, 15 or 20 runs.
Press the ‘ENTER’ button to confirm the number of runs, the single run volume is then displayed.
SINGLE RUN VOL.
XXXX
Select the desired digit using the “
▼
” or “
▲
” arrows then press the ‘ENTER’ button to skip to next digit.
When all the digits have been selected the total volume is displayed.
TOT. L. XXXX
ENGLISH
