ppm
Symptoms and applicable standard
frontal headache, life threatening after 3hrs. Maximum concentration in flue gas
400
per epA and AgA.
800
dizziness, nausea, convulsions, death w/i 2-3 hrs.
1600
nausea w/i 20 min; death w/i 2-3 hrs
opERAtIoN
1. power on/off
•
press
� to turn on and off the meter. when meter is power on, the preset alarm value and
current air temperature will be blinking on the lCd.
•
Meter will perform Self-Test for 15 seconds. A beep after the self test indicates that the
meter is ready to use.
IMpoRtANt:
it is recommended to turn on the meter in an area free of Co since high Co level may cause
failure in passing Self-Test.
2. Alarm setting
•
The meter alarm is preset to 25ppm to warn about possible danger.
•
User can adjust the alarm level by choosing one. The available Co gas levels: 25, 30, 35, 45,
50, 70, 100 and 200ppm.
•
Release the pushbutton to select the preferred value. The meter will return to Self-Test
mode in a few seconds.
3. Measurement
•
The meter detects the existence of Co in the environment and displays the reading in ppm.
it also indicates the maximum value (at lower side of the lCd) of all readings.
•
Reset the maximum value by pressing
4. Backlight
press
pushbutton to turn on and off the backlight.
A
25
ppm
26 C
pushbutton for two seconds in measuring mode.
6