Extech Instruments CO100 Manuel utilisateur

User Manual

Desktop Indoor Air Quality Monitor

Model CO100

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2 CO100-en-GB_v2.3 9/16

Introduction

Congratulations on your purchase of this Extech Meter. The Carbon Dioxide (CO2) Monitor is designed for air

quality control and health control by measuring Carbon Dioxide level in areas where CO2could be a concern.

The measured CO2value in ppm (parts per million), Temperature, Humidity and Time will be displayed on the

LCD along with three CO2status indications: Good (0 to 800ppm), Normal (800 to1200ppm), Poor (>1200ppm).

An acoustic alarm sounds when the CO2level exceeds a defined level. This meter is shipped fully tested and

calibrated and, with proper use, will provide years of reliable service.

Operation

1. Power button (rear)

Turns the unit on or off.

2. HOLD button (rear)

Freezes the current reading in the display.

3. °C/°F button (rear)

Selects °C or °F

4. Clock button (rear)

Press and hold this button for 2 seconds to enter

into clock mode. Press the   or   button

to adjust the flashing digits. Press the clock

button again to step through the settings

(day:month:year;hour:minute). Press the  

ESC button to exit the clock setting mode.

5. Alarm button

Press the Alarm button once to activate the Alarm mode. The icon appears on LCD display. If

the measured value exceeds the defined value, the alarm will sound and the display will flash.

Press the button again to exit the Alarm mode.

Alarm Value Setting

Press and hold the ALARM button for 2 seconds to enter into setting mode. The icon will

flash.

Press the or button to increase or decrease the value.

Press the ESC button to exit the setting mode.

GOOD 

NORMAL and NORMAL 

POOR Value Setting

In the Alarm Value Setting mode, press the ALARM button to set the GOOD NORMAL threshold

value. GOOD 

NORMAL will appear in the display. Adjust the value as needed. Press the ALARM

button again to set the NORMAL POOR threshold value. NORMAL 

POOR will appear in the

display. Adjust the value as needed.

Press the ESC button to exit the mode.

6. button

Press this button to increase a value. Press the  

ESC button to exit the function.

7. button

Press this button to decrease a value. Press the ESC button to exit the function.

8. MAX MIN button

Press the button once, the  

MAX icon appears and the Maximum measured value of CO2,

temperature and humidity will be displayed on the screen. The display will be updated only if a

higher value is measured. Press this button again, the  

MIN icon appears and the Minimum

measured value of CO2 temperature and humidity will be displayed on the screen. Press ESC

button to exit the function.

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9. ESC button

Press this button to exit the current mode.

10. AC adaptor socket

11. Power ON LED

Backlight

Touch the button area below the LCD and the backlight will turn on. It will turn off automatically after 20

seconds of inactivity. Press  

ESC button at any time to exit the function.

ABC (Automatic Baseline Calibration)

ABC (Automatic Baseline Calibration) establishes a baseline calibration to eliminate the zero drift of

the infrared sensor. The ABC function is always  

ON when the meter is turned on. ABC is designed

to calibrate the meter at the minimum CO2 reading detected during 7 days of continuous

monitoring (power on). It assumes that the area being tested receives fresh air with a CO2 level of

approximately 400ppm at some period of time during the seven days. It is not suitable to use a

desktop CO2 meter in closed areas with consistently high CO2 levels, 24 hours a day.

Maintenance

1. The meter should be cleaned with a damp cloth and mild detergent when necessary. Do not use solvents

or abrasives.

2. Store the meter in an area with moderate temperature and humidity.

Specifications

Function Range Resolution Accuracy

CO20 to 9999ppm 1ppm ±75 ppm or ±5% of reading

Temperature 23 to 122°F

( 5°C to 50°C) 0.1° ±1.5°C/2.7°F

Humidity 0.1 to 90.0% 0.1% ±5%

Display LCD with backlighting

Sampling Interval: 2 seconds

Overload Indication: OL 

Sensor Type CO2: NDIR (non dispersive infrared) technology

Operating Conditions 5°C to 50 °C (23 oF to 122 oF) at < 90 % RH

Storage Conditions 5°C to 50 °C (23 oF to 122 oF) at < 90 % RH

Power Supply 110V 220V AC, output 6.0V DC 500mA (supplied)

Dimensions / Weight 117x102x102mm 

(4.6x4x4 ); 204g (7.2 oz.)

ISO 9001 Certified

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