Operating Instructions
Push the Power Button to turn the meter on and off. When turning the
meter on it will preform a self diagnostic test. The LCD will count down
from 60 to 0 while emitting a beep. If the meter passes the self-test it will
begin monitoring, showing the current CO and Temperature readings on
the screen. If the meter does not pass the self-test the LCD will display
“Err” and the meter will not take a measurement.
If the meter reads above 1000 ppm the LCD will display “OL” to indicate
an out of range condition.
The beeping functions much like the clicking of a Geiger counter:
• The higher the concentration of CO the faster the beeps will sound
• When above 200 ppm the beeper sounds continuously, while the
frequency of the tone increases with the concentration of CO
Selecting Temperature Units
When the meter is rst powered on the default scale setting is set to the
Celsius (°C) scale. Press the °C/°F Button to switch between Celsius
and Fahrenheit. The meter will start up in the Temperature scale that was
selected when turned off.
Data Hold
Press the Hold Button to freeze the current reading on the display. Press
the button again to resume normal measuring. When Data Hold is active
the Max and °C/°F Buttons are disabled.
Set High CO Alarm Threshold
Press and hold the Set Alarm Button to Set the CO High Alarm Threshold.
The setting range is from 0 to 1000 ppm. The default is set to 35 ppm.
While holding the SET Button, press the Up and Down buttons to adjust
the value. Release the SET Button to save and resume normal measuring.
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