9 CO220-en-US_V1.5 8/20
MAX/MIN MEMORY
The meter automatically records Maximum and Minimum readings
when the meter is switched ON. In the normal mode, press the CO
2
button to see the maximum and minimum levels of CO
2
. While
viewing the Max or Min reading, press and hold the SELECT/RECALL
button to reset the MAX or MIN memory. The “Clr” icon will appear
for 2 seconds and the display will begin tracking new MAX and MIN
readings.
DATALOGGER MEMORY 99 READINGS
The user can store up to 99 CO
2
readings in memory for later recall.
Press the ESC-MEM button
momentarily to save the current CO
2
reading with date/time stamp. The
meter will emit a short beep and the
memory location number will replace
the RH reading for 2 seconds before
returning to the RH reading.
Once the memory is full, the meter will
overwrite the first data point stored
and continue to overwrite existing
readings as new readings are stored.
To recall the data use the
SELECT/RECALL button. The middle tier
display will show the memory location number and the top tier
display will show the stored reading in ppm. The bottom tier
display shows the date/time stamp for the displayed reading.
Press the
o
C/
o
F-RH% button momentarily to return to the normal
operating mode.
Press and hold the SELECT/RECALL button to reset the 99 point memory
bank, the “Clr” icon will appear for 2 seconds before returning to the
normal display mode.
