UEi Test Instruments AQM4 - Manual (Page 5)

4
Turns the meter on or off.
Press and hold to enter setup mode
while meter is off.
Press while turning the meter
on to disable auto power off.
Exits setup/recall page. Press and
hold to start automatic logging.
Press to switch display mode.
Press and hold to enter memory
recall mode.
KEYPAD
SYMBOLS
Primary LCD Measured and calculated
values
Secondary LCD Real time clock
CO²
Carbon dioxide reading
CO Carbon monoxide reading
HOLD Readings are frozen
MIN/MAX Minimum/maximum readings
STEL Short-term exposure limit (15
minutes weighted average)*
TWA Time weighted average
(8 hours)*
Low battery indicator
DP Dew point temperature
TA Air temperature
WBT Wet bulb temperature
%RH Percentage of relative humidity
°C/°F Celsius/Fahrenheit scale
CAL In calibration status
REC In manual/automatic logging
RECALL In manual records recall mode
*CO² Only