44
Chapter 3
The Dual Battery Wiring Harness is water-resistant, but
NOT
water-
proof, the cable may fail if subjected to abundant water exposure
including submersion in water.
Zeroing the DustTrak
™
II/DRX
Aerosol Monitor
Always zero the DustTrak
™
II
and
DustTrak
™
DRX
monitor before
beginning a sample. See the instructions in the DustTrak
™
II
or
DustTrak
™
DRX
user
manual for more information. If possible, zero
the instrument under stable ambient temperature conditions (since
variations in temperature will have a small impact upon the
DustTrak
™
monitor readings). If this is not possible (for example,
24-hour outdoor sampling, with wide temperature swings) the
instrument should be kept closed inside the Environmental Enclosure.
The thermal mass of the Enclosure will dampen out the effect of
temperature swings, radiant heat, etc.
In nearly all cases, the temperature impact upon the DustTrak
™ II/
DRX
aerosol
monitor reading is very small in comparison to the
ambient particle concentration.
Setting the Flow Rate for the Respirable Aerosol Inlet
(optional accessory)
The optional Respirable Aerosol Inlet is designed to operate at a
1.7 L/min flow rate to achieve the proper particle cut-off size. When
using a Respirable Aerosol Inlet, the flow rate should be verified
and/or adjusted as described in the DustTrak
™
II
or
DustTrak
™
DRX
user manual to 1.7 L/min.
Locking the Environmental Enclosure
To avoid theft of the DustTrak
™
II/DRX
aerosol
monitor
,
when left
inside the Environmental Enclosure, use a padlock to lock the box.
There are two holes on the front of the box that allow for a standard
padlock to be attached. A padlock is
not
supplied with the
Model 8535.
Содержание DustTrak 8535
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