Sartorius Stedim Biotech MD8 airscan, Operating Instructions Manual, Page: 25 / 57

7.3 Starting and ending an air sampling procedure
A measurement can be started when the message “sartorius MD8 ready to start” is shown in
the display. The parameters which were used in the previous sampling procedure are those
which are stored, so if you wish to perform a new air sampling with the same parameters, you
can start sampling immediately by simply pressing the
Start key (see flow chart 3).
Use the “ ⇒ ” key to change or check the individual parameters as described above.
On pressing Start , the turbopump starts and the air flow rate set is normally attained within
15 seconds of start-up, and then held constant.
When the preset sampling time is up, air sampling is automatically ended, and the prompt
“test completed (press Enter)” is displayed. On pressing the
Enter key, the initial message
“sartorius MD8 ready to start” is displayed.
Should it be necessary for you to interrupt sampling ahead of time, press the Stop key. This
stops the turbopump and the message “user break! (press Enter)” is displayed.
If the instrument detects an error, e.g. a defective filter, during sampling, it stops the
turbopump and so interrupts air sampling. In this case, an appropriate error message is
displayed, e.g. “Filter defect (press Enter)”. Error messages are listed in section 7.5.
In each of these two interruptions, the message given must be confirmed by pressing
the
Enter key.
Once you have confirmed the message, the prompt “elapsed time ## min (Enter)” will appear
on the display. This shows the time for which sampling was carried out before the interruption
took effect, so allowing you in some cases still to evaluate the measurement, or to make a
restart to continue with the air sampling.
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