Chapter 5 : Sampling Options
5-16 Lasair® Pro Aerosol Particle Counter Operations Manual
• 100 LPM
Depending on the flowrate of the Lasair Pro Particle Counter, the size and the shape of the
HHIPA horn are slightly dierent as well as the size of the barb fitting and tubing ID.
Tubing
All units are supplied with the same ergonomic handle, a barb fitting to attach tubing
and 10 feet of tubing to connect to the Lasair Pro Particle Counter. Each of the probes is
supplied with 10 feet (3 meters) of tubing, but it can be replaced with tubing up to the
maximum length allowed for the instrument (8 meters). The user should take into account
particle transport losses when using longer lengths of tubing and should minimize the
length of tubing between the HHIPA and the particle counter whenever possible.
Figure 5-15. Hand-held Isokinetic Probe Attachment (HHIPA)
Application
Tubing is connected to the barb fitting located on the rear of the HHIPA. The other end of
the tubing connects to the Lasair Pro Particle Counter’s sample inlet.
For filter scanning applications it is most common to utilize the audio beep function of
the Lasair Pro Particle Counter. This feature allows the user to scan a filter without looking
at the screen of the Lasair Pro, and to hear an audio sound when particles are detected.
Go to the DISPLAY tab of the DISPLAY screen for volume adjustment, and ensure audible
alarms are enabled (see GENERAL Tab in Chapter 7).
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