User's Guide
Carbon Monoxide Meter
Model CO10
Introduction
Congratulations on your purchase of the Extech C010 Carbon Monoxide Meter. The
CO10 measures and displays CO concentrations between 0 and 1000 parts per million
(ppm).
Safety Information
Carbon monoxide is life threatening even at relatively low
concentrations; learn and recognize the effects of CO poisoning (see
Table below). Do not use this meter as a personal safety monitoring
device.
Effects of CO poisoning
0-1 PPM Normal background levels
9 PPM Maximum indoor air quality level
50 PPM Maximum 8 hour average exposure level
200 PPM Mild headache, fatigue, nausea and dizziness
400 PPM Frontal headache, life threatening after 3 hours
800 PPM
1600 PPM
12800 PPM
Dizziness, nausea, convulsions, DEATH WITHIN 2 TO 3 HOURS
Nausea within 20 minutes, DEATH WITHIN 1 HOUR
DEATH WITHIN 2 TO 3 MINUTES
Ensure that the meter is turned on in an area
free of CO. If not, the meter will read incorrectly
when subsequently measuring CO.
Meter Description
1. LCD display
2. Power ON/OFF key
3. MODE key
4. Power on/Alarm light
5. SEL key
6. Sensor
7. Battery compartment
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CO10-EU V2.0 4/06
Operation
MEASUREMENTS
IMPORTANT: Ensure that the meter is turned on in an area free of CO. If not, the
meter will read incorrectly when subsequently measuring CO.
1. Press the ON/OFF button to turn the meter on.
Allow time for the meter to perform the self test and for the
display to settle.
2. To use the meter, trace the CO10 around the area of the
suspected leak.
3. The meter will indicate the presence of CO (in ppm) on the LCD display. An audible
beep will sound at 35 ppm alerting the user that the threshold of dangerous CO levels
has been detected. The higher the concentration of CO, the faster the beeper will
sound. Above 200PPM the beeper will sound continuously.
4. To turn the meter off, press the ON/OFF key. If the meter is left on, the meter will
automatically power off after 15 minutes.
MODE Button Functions
Press the MODE button to step through the following functions..
1. Maximum Data Mode: Displays the highest reading taken.
This reading is cleared when the meter is powered off.
REC
MAX
2. Recall Data Mode: Press the SEL button to step through and
recall the data from the 10 memory locations. The current
memory location (0-9) is displayed in the top right.
3. Store Data Mode: In this mode, you can store the reading to
the next available memory location by pressing the SEL
button. “REC” is displayed in the top right.
4. Recall Alarm Mode: The meter will display the alarm level
data setting ─“30ppm”.
Zero Mode: Press the SEL button for over 8 seconds to enter
the manual zero adjusting mode. The zero value will blink and
then the display will 0 and the meter will return to the
Measure Mode.
Time
5. Measuring Time Mode/Auto Power Off disable: This mode
will display how long the meter has been on taking
measurements. The time is cleared when the meter is
powered off. The auto power off function is disabled in this
mode. In all other modes, auto power off is enabled and will power off after 15
minutes of inactivity.
6. Audible Alarm Enable/Disable:The audible alarm can be
turned on/off by pressing the SEL button. “on” or “off” will be
displayed on the LCD. The alarm light will remain enabled in
either setting.
Backlight In the measure mode press and hold the SEL button for 4 seconds to turn the
backlight on/off. Press the MODE button to enter maximum data mode.
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CO10-EU V2.0 4/06
MEM
REC
PPM
Specifications
Measurement range 0-1000 ppm
Resolution 1 ppm
Accuracy ±5% or ±10 ppm (whichever is greater)
Sensor Type Stabilized electrochemical Gas-specific (CO)
Sensor Life (Typical) 3 years
Warm-up Period <2 seconds
Power supply 9V Battery (NEDA 1604 or IEC6F22)
Battery life Approx. 50 hours with alkaline battery
Operating Temperature 32 to 122
Storage Temperature -22 to 140
Operating Humidity 0 to 99% RH (non condensing)
Dimensions 6.3 x 2.2 x 1.57” (160 x 56 x 40mm)
Weight 6.35oz (180g)
All rights reserved including the right of reproduction in whole or in part in any form.
Copyright © 2006 Extech Instruments Corporation.
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F (0 to 50oC)
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F (-30 to 60oC)
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CO10-EU V2.0 4/06
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