Instructions / Assembly

5
BEFORE USING THIS METER
Carbon Monoxide (CO) is a colorless, odorless, flavorless gas that
is life-threatening even at relatively low concentrations. Before using
this meter, read and understand the information in the chart below
pertaining to CO concentration levels.
OPERATING INSTRUCTIONS
TESTING
1. Long-press the power button to power-on the meter; the Zero-
Setting icon
H
will flash. It is at this time that the zero-point is
set, so ensure to power-on in an area free of carbon monoxide.
2. After powering-on, press the SET Button
10
to perform a
3-minute diagnostic self-test. It is strongly suggested to perform
this procedure once for every 24 hours of use.
3. Place the meter into the area to monitor. The response time to
reach T90 (90% of reading) is 1 minute.
• At CO concentration levels above the A1 Low Alarm limit of
35 ppm (TWA), the buzzer will sound, the light will flash at a
frequency of 1Hz, and the LO icon
F
will appear on the display.
• At concentration levels above the A2 High Alarm limit of 200 ppm,
the buzzer will sound, the light will flash at a frequency of 2Hz and
the HI icon
F
will appear on the display.
• The STEL icon
K
will appear when an average of 200 ppm
exposure is present for 15 minutes.
Once you have confirmed the alarm conditions, press the MUTE
button to stop audible alarm for approx. 3 minutes. Press again to
reactivate the audible alarm immediately.
CARBON MONOXIDE CONCENTRATION LEVELS
PPM Explanation
0-1 Normal background levels.
9 EPA/ASHRAE levels for living areas.
35 OSHA/NIOSH maximum 8 hr exposure limit.
125 ACGIH ceiling limit of exposure.
200
OSHA/NIOSH upper limit of exposure: mild headache, fatigue,
nausea and dizziness within 2-3 hours.
1500 OSHA Imediately Dangerous to Life or Health (IDHL).