TSI Incorporated 8525, Руководство по эксплуатации и обслуживанию

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19
Chapter 3
Operation
Overview
The P-T
RAK
® particle counter has three main modes of operation, Survey,
Sample, and Data Log.
Survey mode: When the P-T
RAK
® particle counter is first turned on, it
will be in Survey mode which is used to display real-time particle
concentration readings, in particles per cubic centimeter (pt/cc). The
instrument will update the displayed concentration once each second.
This is the most common mode of operation and is used to track sources
of ultrafine particles.
Sample mode: The Sample mode is used to take a 10-second, averaged
particle concentration reading. These single data points may be stored in
memory and annotated.
Data Log mode: The Data Log mode is used to record particle
concentration readings over a period of time, and store these readings in
the instrument memory. Data files may be downloaded to a computer
for later analysis using T
RAK
P
RO
™
software.
Turning the Instrument On
Press the ON/OFF switch (located at the back of the instrument) and hold
for 2 to 3 seconds to turn on the P-T
RAK
®
particle counter. The P-T
RAK
®
particle counter immediately begins a warm-up, countdown sequence, which
takes about 60 seconds. During the warm-up time, the instrument is
powering the internal components and coming up to operating temperature.
A screen will be displayed identifying the instrument model number and the
firmware revision level.
Tilting the Instrument
CAUTION
!
To prevent false counts and/or a temporary loss
of counting efficiency, the P-T
RAK
® particle
counter must be held in a substantially level
position during operation. Prolonged operation
while tilted can cause alcohol within the
instrument to flood the optics. This may result in
the need for factory cleaning and servicing.