TSI Instruments DustTrak 8520, Operation And Service Manual

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5
Chapter 2
Setting-Up
Supplying Power to the D
UST
T
RAK
Aerosol Monitor
The Model 8520 D
UST
T
RAK
TM Aerosol Monitor must be powered in one of
two ways: four size C batteries or the supplied AC adapter.
Installing the Batteries
Remove the battery cover and slide the battery holder out of the battery
compartment and insert four size C batteries.
Hold the wires out of the way and slide the battery holder back into the
battery compartment. Tuck the wires in and then re-install the battery
cover (see Figure 2–1).
Figure 2–1: Tuck the Wires In and Close the Cover
Using the AC Adapter
The AC adapter allows you to power the D
UST
T
RAK
monitor from an
AC wall outlet. When using the AC adapter, the batteries (if installed)
will be bypassed. The AC adapter will not charge the batteries.
The D
UST
T
RAK
monitor has an internal, non-user accessible battery that
is used to keep logged data intact when power is turned off. Changing
the C-size batteries or disconnecting the AC adapter will not cause data
to be lost. This battery will last for years. TSI will install a new battery,
if necessary, when the unit is returned to the factory for service.