UEi Test Instruments AQM4 - Manual (Page 11)

Press key to switch the display
parameter. (Fig. 18)
The time displayed in memory recall mode is
the recording time of this memory.
To escape the memory recall mode, press
key to leave and return to normal
display.
ALARM
The meter features an audible alarm to give
warnings when CO concentration exceeds
a pre-set limit. (See Pg 12, P20 for setting
alarm threshold.) It emits beeps (Abt. 80dB)
when CO level goes over the set value and
stops only when the readings fall below the
set value. It beeps again when value goes
over the limit.
The meter can automatically record readings
of CO²/CO/TEMPERATURE/RH for extended
environment monitoring. The memory
capacity is 8,000 points. Users can set up
sampling rate from 1 second to 4 hours, 59
minutes and 59 seconds. (See pg 11, P40)
After sampling rate is selected, press
for 2 seconds under normal mode to start
logging. The icon flashes to indicate
the logging status and LCD main display
shows the real time CO² measured value.
Lower display is the real time clock. (Fig. 19)
10