Extech Instruments CO15 Manual de usuario

User Manual

Carbon Monoxide Meter

Model CO15

Additional User Manual Translations available at www.extech.com

CO15-en-GB_v1.0 6/17

Introduction

Thank you for selecting the Extech CO15 Carbon

Monoxide Meter. The CO15 is a digital, pen style meter,

that measures and displays carbon monoxide (CO)

concentrations between 0 and 999 parts per million

(ppm). The CO15 can be used for ambient air safety

checks of residential areas, appliances, HVAC service on

furnaces and hot water heaters, home inspections, and

industrial environments where the accumulation of CO

is possible.

This device is shipped fully tested and calibrated and,

with proper use, will provide years of reliable service.

Please visit our website (www.extech.com) to check for

the latest version and translations of this User Manual,

Product Updates, and Customer Support

Features

Adjustable carbon monoxide warning level

Dual Display

Long life electrochemical sensor

Audible alarm

Backlit LCD for easy viewing in dimly lit areas

Low battery indicator

Auto power off

Included wrist strap and carry pouch

Safety Information

IMPORTANT SAFETY NOTES

The CO15 Carbon Monoxide Monitor is intended for

general purpose Air Quality monitoring only, and has

not been certified for use pursuant to any state or city

safety Carbon Monoxide Alarm or Monitoring

requirements.

The CO15 Carbon Monoxide Monitor has not been

tested by an independent lab to comply with UL 2034

or IAS 6-96 standard.

It is the responsibility of the customer to obtain and

apply current local, state, and national regulations with

regard to CO alarms, monitoring and testing.

CO15-en-GB_v1.0 6/17

Electromagnetic (EMI) interference my cause erratic

meter readings; do not place meter near areas of high

EMI when taking CO measurements.

Recovery time is required after the meter has been

exposed to high levels of CO (the longer the exposure,

the longer the recovery time).

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 Carbon Monoxide (CO) Poisoning

Warning: Ensure that the meter is powered on in room

temperature and in an area free of CO. If not, the meter

will read incorrectly when subsequently measuring CO.

0-1 PPM

Normal background levels

9 PPM

Maximum allowable short term

exposure

50 PPM

Maximum allowable continuous

exposure level in any 8-hour period,

according to OSHA

200 PPM

Mild headache, fatigue, nausea and

dizziness after 2-3 hours

400 PPM

Frontal headache with 1-2 hours, life

threatening after 3 hours

800 PPM

Dizziness, nausea, convulsions within

45 minutes. Unconsciousness within 2

hours. DEATH WITHIN 2 TO 3 HOURS

1600 PPM

Headache, dizziness, nausea within 20

minutes, DEATH WITHIN 1 HOUR

3200 PPM

Headache, dizziness, nausea within 5-

10 minutes. DEATH WITHIN 25-30

MINUTES

6400 PPM

Headache, dizziness, nausea within 1-

2 minutes. DEATH WITHIN 10-15

MINUTES

12800 PPM

DEATH WITHIN 1 TO 3 MINUTES

CO15-en-GB_v1.0 6/17

Meter Description

1. CO Sensor

2. LCD

3. Backlight/Units button

4. Power/Alarm limit button

Note: Battery compartment located

on back of meter.

LCD Display

1. Primary Display

2. MAX reading mode

3. Secondary Display

4. Unit of measure

Button Descriptions

Turn the meter on and off (short press); Select alarm

setpoint value (long press from a powered OFF state;

release the button when desired alarm limit is displayed)

Turn the backlight on and off (short press); Toggle

temperature units (long press during self-test period).

Reset Maximum CO value (long press in normal

operating mode)

CO15-en-GB_v1.0 6/17

Operation

Power the meter

IMPORTANT: Power the meter in a room temperature

environment and in an area free of CO; otherwise the

meter will read incorrectly when subsequently measuring

CO.

Press the button to power on the meter. The LCD will

switch ON and display the programmed CO alarm limit in

the primary display and the ambient air temperature in

the secondary display (as shown in the LCD description

section above). Replace the batteries if the display does

not switch ON.

The meter performs a 15-second self-test during which

the displayed values will blink. When the self-test is

finished, the meter beeps and enters the normal

operating mode.

Measurements

The CO15 detects the existence of carbon monoxide (CO)

in the environment and displays the reading in parts per

million (PPM) in the primary display.

1. To take a measurement, trace the CO15 around the

area of the suspected leak.

2. The meter indicates the presence of carbon

monoxide (CO) in PPM in the primary display. The

secondary display indicates the maximum value

since powered on.

3. Long press the “backlight” button while in

measurement mode to reset the maximum value.

4. When high CO levels are detected an audible beeper

sounds at 25 ppm alerting the user to the dangerous

CO levels. The higher the concentration of CO, the

faster the beeper will sound.

5. To turn the meter off, press the button. The

meter powers off after 15 minutes of inactivity.

Change Temperature Units

The temperature shows on the display during the self-test

only. Power the meter in a room temperature

environment for the most accurate readings. Long press

the button during the self-test to change the

temperature units to oC or oF.

CO15-en-GB_v1.0 6/17

Alarm Settings

An audible beep sounds at 25ppm alerting the user to

dangerous CO levels. Change the alarm limit value by

following the steps below.

1. Turn OFF the meter by pressing the button.

2. Long press the button until the options display

on the screen.

3. The LCD cycles through these options: 25, 30, 35,

45, 50, 70, 100, 200 ppm.

4. Release the button at the desired alarm limit

value.

5. The meter enters the self-test mode.

Backlight

The meter features a backlit LCD for use in dimly lit areas.

Press the button to power ON and OFF the backlight.

Auto Power OFF

The meter automatically powers OFF after 15 minutes of

inactivity.

Maintenance

Battery Replacement

1. To access the batteries, remove the rear battery

compartment cover by pushing up on the tab at the

bottom of the meter. Do not operate the meter with

the battery compartment open.

2. Replace the (3) 1.5V AAA batteries observing correct

polarity.

3. Re-assemble the meter before use.

Safety: Please dispose of batteries responsibly; never dispose of

batteries in a fire, batteries may explode or leak. If the meter is not

to be used for 60 days or more, remove the battery and store

separately.

Never dispose of used batteries or rechargeable batteries

in household waste.

As consumers, users are legally required to take used

batteries to appropriate collection sites, the retail store

where the batteries were purchased, or wherever

batteries are sold.

Disposal: Do not dispose of this instrument in household

waste. The user is obligated to take end-of-life devices to

a designated collection point for the disposal of electrical

and electronic equipment.

CO15-en-GB_v1.0 6/17

Specifications

Measurement range 0-999 ppm

Resolution 1 ppm

Accuracy 0 ~ 100 ppm: ± 20%

100 ~ 500 ppm: ± 15%

Accuracy stated for ambient

conditions: 20oC ±5oC (68oF ±9oF)

and 50% RH ±20%RH

Sensor Type Electrochemical

Power supply (3) 1.5V ‘AAA’ batteries

Battery life Approx. 250 hours (backlight

off); 35 hours (backlight on)

Dimensions / Weight: 175 x 47 x 28mm (6.9 x 1.8 x

1.1”) / 158.8g (5.6 oz.)

Troubleshooting

Error

Problem

Solution

Display

No display when pressing

power button

Ensure batteries are

properly installed with

correct polarity

Replace batteries

Display

Display switches off

Check for low battery

indicator; replace

batteries

Display

Calibration Failure

Check for low battery

indicator; replace

batteries

Measurement is below

the range of the meter

Check readings in a

different area

Measurement is above

the range of the meter

Check readings in a

different area

Data error

Contact Extech for service

E31

A/D failure

Contact Extech for service

E33

Measurement circuit

failure

Contact Extech for service

E35

Self-test failure

Power meter in an area

free of carbon monoxide

Sensor Failure

Contact Extech for service

ISO-9001 Certified

www.extech.com

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