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Operating Manual
www.qedenv.com
SEM5000.002
© QED Environmental Systems Inc.
SEM5000 Surface Emissions Monitor
USING THE SEM5000
Turning the instrument ON
Press and hold the ON/OFF button for few seconds, until the display is activated.
The start-up sequence includes several steps:
The Landtec Logo is displayed
Information about the version of the instrument firmware, serial number of the instrument,
next recommended calibration date is displayed
NOTE: If there is existing data stored in the instrument’s memory from a previous survey,
the message “DATA TO DOWNLOAD” will appear at the bottom of the screen.
The instrument will warm up. The warm up lasts approximately 20-30 seconds.
NOTE: The instrument’s functions are not available during the warm up period.
Once the warm up and calibration are complete, the four LED lights will blink and the alarm
will sound
A concentration level will be displayed. This is the actual measurement of methane in the
atmosphere. Naturally occurring methane levels in atmosphere are typically 2.5ppm
The SEM5000 is now ready to operate
