TSI Instruments AEROTRAK 9306, Operation Manual, Page: 40 / 82

3-18 AeroTrak
®
Handheld Airborne Particle Counter
To acknowledge the alarm and silence the buzzer, tap the alarm
icon .
NOT I CE S
•
In Differential modes (
Δ
) , disabling one or more channels will
disable all threshold alarms. Other alarms are not affected.
•
While in beep mode , a threshold of 0 will not trigger an audible
alarm even if Alarm is enabled.
•
Concentration display is unavailable in Beep mode.
9. Press Save or Save New Recipe as appropriate when done.
NOT I CE
The Channel Configuration screen has restrictions that must be
noted when Differential mode (

) is selected.
When differential
Δ
particle count or concentration (

) is
selected , t he total number of counts is the number of particles
between enabled bin sizes. When particle concentration is
cumulative (
Σ),
the total number of counts includes all particles
larger than the bin size.
In Differential Display/Alarm mode, there are two constraints:
•
If alarming is desired, all channels must be enabled.
•
If channel selection is desired, then all alarms must
be disabled .
The controls work in a mutually exclusive manner. When any of the
channel “
Enable
” boxes are unchecked, all “
Alarm
” enable boxes
will be cleare
d. When any of the “
Alarm
” boxes are checked, all of
the channel “
Enable
” boxes will become checked.
For the Cumulative modes (

), there are no such constraints. Any
combination of “
Enable
” and “
Alarm
” selections can be made.