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Unpacking and Setting Up the Model 651 Teledyne API Ultrafine Particle Monitor - Model 651
28 07506C DCN6727
Using a sampling system connected directly to the aerosol inlet.
Environmental monitoring using tubing connected directly to
the aerosol inlet.
IMPORTANT
The gauge pressure of the sampled aerosol must be within +4/-20 in.
H
2
O pressure relative to the ambient pressure. Pressures outside of this
range will result in water-handling failures.
To set up the aerosol supply, follow these instructions:
1. Decide whether you will sample from the front or the back of
the instrument.
2. Place the aerosol sample inlet cap over the sample port that you
will not be using.
3. Determine your sampling method. The instrument is shipped
with the inlet screen assembly in place, but if it has been
removed and you wish to use it, you must reconnect it to the
Model 651 inlet. If you are not using the inlet screen, connect
the aerosol sample line to the aerosol inlet.
Figure 2-3
Connecting the Aerosol Supply
4. If you are using the inlet screen assembly and it needs to be
connected, line up the two captive screws with the
corresponding holes on the front panel. The elbow tube should
line up with the nozzle.