OPERATION
2-10
• AVERAGE READING: The TWA or running
average since the start of the measurement (see Section
4.6.5 to change). The average is recalculated every
minute.
• PEAK READING: The highest instantaneous reading
since the start of the measurement. If [Y/+] is pressed
while the peak reading is displayed, the unit will ask
“Reset Peak?” If [Y/+] is pressed again, the peak value
will be cleared and the display will return to the
“Ready” message or instantaneous reading. The peak
reading is automatically reset when a new measurement
is started by pressing [Y/+] from the “Ready…” screen.
• RUN TIME: The current measurement has been last.
• CURRENT BATTERY VOLTAGE and SHUT
DOWN VOLTAGE: The present battery voltage is
displayed.
Note: A fully charged battery pack should show 4.8 volts
or higher. When the battery voltage falls below 4.4 volts, a
flashing “Bat” will appear as a warning message. There are
about 20-30 minutes of run time left before the monitor
turns off automatically, when the battery voltage falls
below 4.2 volts.
• DATE, TIME, TEMPERATURE: This menu
displays the current date (month/day/year), time (24-
hour format), and internal unit temperature in degrees
Fahrenheit.
• LOG ON/OFF? Allows the user to start datalogging of
the current measurement. A superscript “L” flashes in
the ppm measurement display when datalogging is on.
To Next Page
Loading...
