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Fluke 983
Users Manual
Using the Particle Counter
The following sections give detailed information about
using the Particle Counter.
Purging the Particle Counter
Before taking particle samples, the Particle Counter
should be purged using the Zero Count Filter.
Purging the Particle Counter will make sure the readings
are accurate. To purge the Particle Counter:
1.
Fit the Filter Adapter onto the end of the Zero Count
Filter. Note the arrow on the filter denoting airflow
direction.
2.
Connect the adapter directly onto the end of the
Isokinetic Probe.
3.
Operate the unit for approximately 5 minutes.
4.
Verify the data on the display:
On the average, not more than one particle
greater than 0.3 µm in five minutes or not more
than one particle per 0.5 cubic foot should be
apparent.
Once the unit has been purged, resume normal
use. Remove the zero count filter from the
Isokinetic Probe.
In a clean-room application, the zero count filter verifies
that the counter is not counting electrical noise signals
from internal components and is not subject to external
interference. In other applications, the zero count filter
purges the sensor immediately after a high-concentration
12
sampling. If the unit fails, see "Purging the Particle
Counter Sensor".
Set Up
To set up the Particle Counter:
1.
Go through the different screens and set the desired
parameters for sampling. Refer to previous sections
regarding the different screens and menus.
2.
Select the desired intake device. There are two
Isokinetic Probes that ship with the Particle counter:
The Isokinetic Probe is attached when the
Particle Counter ships and is for general use.
The Barbed Isokinetic Probe connects to the
High Purity Tubing. Use the intake nozzle,
tubing, and Barbed Isokinetic Probe for areas
where the Particle Counter would not normally
fit. See Figure 9.
WCaution
Remove the Isokinetic-Probe Cover (the
black cap) before use. Not doing so can
damage the Particle Counter.
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