AZI Customer Service 800-528-7411 or 602-470-1414
Page 15 of 56
Survey Mode
The survey mode takes samples every 3 seconds automatically. Use this mode to locate mercury
spills or to assess areas of potentially high mercury concentrations. Sampling in the survey mode
is not as accurate. Due to the decreased sample volume, the accuracy of the instrument is
reduced to ± 20% @ .100 mg/m
3
.
•
Press the power ON button.
The digital meter displays 000. If the unit is set to display in ng, the digital meter
displays 00.0. (Disregard the digital meter's initial momentary readings.) Recharge or
replace the battery pack if the LO BAT indicator REMAINS ON. Refer to pages 17
and/or 21 for the procedure.
To ensure the instrument's electronics have stabilized, allow a 1 minute warm up before
beginning the next step.
•
Press and
hold
the SAMPLE button.
The instrument takes a normal 12 second sample, displays the concentration at the end
of the cycle and then goes into the survey mode sampling every 3 seconds. The display
flashes the measured concentrations at the end of each 3 second sample cycle.
•
When you are finished surveying,
release
the SAMPLE button.
The final survey value remains displayed until the next sample is taken.
NOTE: Approximately 65 samples at .1 mg/m
3
may be taken before a sensor regeneration is
required.
•
To lock the instrument in a survey mode:
Hold the SAMPLE button down until the sensor status indicator bar(s) "_" begins
flashing on the display.
Press the ZERO button, then release the SAMPLE button.
The pump should continue to run and the display should update every 3 seconds.
The instrument remains in the survey mode until one of the following occurs:
The sensor is saturated
A LO BAT (low battery) signal is encountered
An HL (high mercury level) is encountered
The instrument is turned OFF.
Press the power OFF button when not in use.
