TSI Instruments DustTrak 8520, Operation And Service Manual, Page: 56 / 89

Chapter 5 46
Symptom Possible Cause Corrective Action
Battery
symbol is
displayed.
(constant or
blinking) Low battery charge.
Incorrect AC adapter.
Low AC line Voltage
Dirty battery contacts. Replace batteries or use AC
adapter.
Replace with the correct AC
adapter.
Correct the AC line voltage or
use batteries.
Clean the battery contacts.
Analog
output does
not work Cable/connector not
correctly installed.
Output wired with reverse
polarity. Make sure cable connector is
fully seated.
Make sure analog out (+) and
analog ground (-) are wired
correctly to data-logger.
Analog
output is not
in proportion
to display
Analog output range in
D
UST
T
RAK
monitor may
be set incorrectly.
Data logger scaling factor
may be set incorrectly.
Program analog output to
desired range:
•
0 – 0.100 mg/m
3
•
0 – 1.00 mg/m
3
•
0 – 10.0 mg/m
3
•
0 - 100 mg/m
3
Scaling factor must be
consistent with D
UST
T
RAK
monitor.
Alarm
output does
not work.
Alarm does
not turn on
correctly. Alarm function not turned
on.
Alarm setting incorrect.
Cable/connector not
correctly installed.
Alarm output wired with
reverse polarity. Alarm function is “off” by
default. It must be programmed
“on” (using T
RAK
P
RO
software).
Program alarm setting using
T
RAK
P
RO
software.
Make sure cable connector is
fully seated.
Alarm wires are polarized.
Voltage input must be wired to
alarm input (+).