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Getting Started
2-5
P e r f o r m i n g a Z e r o C h e c k
A zero check should be performed at least once a day. It should
also be performed before conducting any important testing or
certification.
To Perform a Zero Check
1.
Turn on the instrument and wait until the main menu
appears.
2.
Remove the Isokinetic inlet if attached. The zero check cannot
be performed when the isokinetic inlet is attached to the
instrument.
3.
Attach the zero filter to the inlet nozzle located on the top of
the instrument.
4.
Press the
Start
button and allow the instrument to purge for
2 minutes.
5.
After the 2-minute purge, continue to sample. In accordance
with JIS standards, there should be no more than 1 particle
counted at any size in 5 minutes.
Note
: If the instrument does not go to zero (1 particle in 5
minutes is considered zero), refer to Chapter 6,
Troubleshooting
, for additional information.
6.
Remove the zero filter and put the isokinetic inlet back on—
the instrument is now ready for operation.
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Summary of Contents for aerotrak 9306-04
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