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Operating Manual
www.qedenv.com
SEM5000.002
© QED Environmental Systems Inc.
SEM5000 Surface Emissions Monitor
NOTE: The exceedance value displayed is the average of the three air/gas test and the Up
Wind and Down Wind tests to account for existing background levels. This calculated value
will be the alarm threshold for an exceedance and will be stored in the SEM5000 memory
for the remainder of the day.
If your SEM event will span multiple days, you will need to perform a new field calibration at
the beginning of each day.
If you plan to survey multiple sites on the same day, you will need to perform field
calibration at each site.
•
Connect the extendable sample probe to the sample inlet of the SEM5000, press the
Function button, (F) and begin your survey
Functions
Data Save Options
LOG
– Activates the Auto Save function. When “LOG” is enabled, the SEM5000 will
automatically save readings as you continue your survey. It will stop saving only if the pump is
turned off or when the instrument is shut down.
The SEM5000 is constantly reading the concentration as the sample is drawn in. It in LOG
mode, it automatically saves a reading every second, by default. Auto Save intervals can be
customized with the Sel.Save Interval option.
Sel. Save Interval
– Allows the user to customize the Auto Save intervals. By scrolling with the
Selector Dial, the user can choose save intervals of 1 second to 10 seconds.
Manual Save
– This option allows the user to save readings manually at desired intervals.
When choosing this option, the Auto Save feature is disabled. Using the Selector Dial, the
user will scroll through the options menu and use the “ON/OFF Pump” option to start and
stop the pump during the survey. Once the pump has started, the user will walk the
predetermined scan path. The SEM5000 will be taking samples and displaying concentrations
but will not be automatically saving any data. When the user wishes to save a reading, they
will press the Function button and that specific reading will be saved. In Manual Save mode, a
reading will be saved every time the Function button is pressed.
Save Event
– This feature allows the user to save additional points during Auto Save. If there
is a point of particular interest that the user wants to note or remember, they will use the
Selector Dial to scroll through to the Manual Save option and press the Selector Dial to save
that specific location as an event point.
