TSI Incorporated 8525, Руководство по эксплуатации и обслуживанию

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Chapter 3
20
The P-T
RAK
® particle counter contains liquid isopropyl alcohol, which is
absorbed into a porous wick. Under most operating conditions, the alcohol
remains absorbed in the wick. However, if the instrument is tilted for a
period of time, the alcohol will slowly seep out of the wick. This liquid
alcohol may be drawn into the optical chamber, causing false particle counts
and possibly flooding the optics. This will not permanently damage the
instrument, but may result in a temporary loss of performance. To avoid this
problem, please observe the following cautions:
•
Do not tilt the instrument up (into a vertical position) to observe the
display. If the instrument is tilted for more than 4 seconds: a tilt error
message will be displayed, the beeper will sound, the displayed
particle concentration will “blank out” and the pump will be stopped.
•
After restoring the instrument to level operation, the tilt error
condition will correct itself (the pump will restart and the display will
reset).
•
If the instrument is tilted during data logging, the instrument may shut
down and discontinue logging.
• If the instrument is tilted during the Sample mode, the data point will
be discarded.