Manual, Ultra High Sensitivity Aerosol Spectrometer (UHSAS)
DOC-0210 Rev E-4
3 4
© 2017 DROPLET MEASUREMENT TECHNOLOGIES
button, and commit a map with a range from 10 – 300 µs. The resulting
histogram should show mostly particles with transit times of less than 100 msec.
If there are many particles with longer transit times, check for leaks in the unit.
If necessary, contact a service representative for further assistance.
6.2.2
To check the Laser Reference Voltages:
•
Ensure the
Laser Current
is on and
Laser Temperature
is at the correct value.
•
Check the
Reference
level on the
Controls
tab. If the displayed Reference is less
than 1.88 V, clean the laser optics as described in section 7.0.
•
If cleaning does not resolve the problem, contact a DMT service representative
for further assistance.
6.3 Manually Adjusting Flow Knobs
The sample and sheath flow knobs should not normally need manual adjustment. In most
conditions, using the controls on the
Controls
tab in the software program suffices. In the rare
instance that flows need to be adjusted manually, however, this can be accomplished by using
the flow control knobs shown in Figure 19.
Figure 19: Sample and Sheath Flow Knobs (Rarely Used)
