Extech CO260 Instruction Manual

User Manual

Carbon Monoxide (CO) and Carbon Dioxide (CO2) Meter

With Air Temp/RH Measurements and Dew Point/Wet Bulb calculations

Model CO260

Additional User Manual Translations available at www.extech.com

Introduction

Thank you for selecting the Extech CO260 Meter. The CO260 measures CO2 (Carbon Dioxide) levels, CO (Carbon Monoxide) levels, air temperature, and relative humidity. The CO260 also displays dew point and wet bulb temperatures, generated from calculations performed on temperature and humidity measurements. The CO260 is an ideal instrument for indoor air quality (IAQ) analysis.

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

• Designed with NDIR (non-dispersive infrared)

• Long life electrochemical sensor

• Audible and visual alarm

• Backlit LCD for easy viewing in dimly lit areas

• Low battery indicator

• Auto power off

• Mini USB connector

• Manual and automatic recording

Safety Information

IMPORTANT CARBON MONOXIDE (CO) SAFETY NOTES

• The CO260 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 CO260 Carbon Monoxide Monitor has not been tested by an independent lab to comply with the 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.

• 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.

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Effects of Carbon Monoxide (CO) poisoning

Warning: Ensure that the meter is powered, at room temperature, and in an area free of

Carbon Monoxide (CO) before starting measurements. 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

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

1600 PPM

3200 PPM

6400 PPM

12800 PPM DEATH WITHIN 1 TO 3 MINUTES

Maximum allowable continuous exposure level in any 8-hour period, according to OSHA

Dizziness, nausea, convulsions within 45 minutes. Unconsciousness within 2 hours. DEATH WITHIN 2 TO 3 HOURS

Headache, dizziness, nausea within 20 minutes, DEATH WITHIN 1 HOUR

Headache, dizziness, nausea within 5-10 minutes. DEATH WITHIN 25-30 MINUTES

Headache, dizziness, nausea within 1-2 minutes. DEATH WITHIN

10-15 MINUTES

Regulatory exposure limits for Carbon Dioxide (CO2)

ASHRAE Standard 62-1989: 1000ppm: CO2 concentration in occupied building should not exceed 1000ppm.

OSHA: 5000ppm: Time weighted average over five 8-hour workday should not exceed 5000ppm.

Building bulletin 101 (BB101): 1500ppm. UK standards for schools state that CO over the whole day (i.e. 9:00am to 3:30 pm) should not exceed 1500ppm.

Germany, Japan, Australia, UK: 5000ppm, 8 hours weighted average in occupational exposure limit is 5000ppm.

EPA Taiwan (Type 1): Indoor areas such as department stores, theaters, restaurants, libraries have acceptable CO

EPA Taiwan (Type 2): Indoor areas with special requirements for good air quality such as schools, hospitals, and day care centers have suggested CO2 level of 600ppm.

concentration of 1000ppm over an 8-hour average period.

averaged

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Descriptions

METER

1. Temperature and Humidity sensor

2. Primary display

3. Secondary display

4. Power and Set button

5. Start and Escape button

6. Mode and Recall button

7. Min-Max-Avg and Enter button

8. Memory and Down button

9. CO and CO

10. Hold and Up button

11. AC Adaptor and Micro USB ports

Battery compartment on rear of meter

LCD DISPLAY

sensors (on rear of meter)

LCD SYMBOLS

Carbon dioxide CO Carbon monoxide TWA Time weighted average (8 hours) STEL Short-term exposure limit (15 minutes weighted average) HOLD Freezes current reading on display MIN/MAX Minimum/Maximum readings

Low battery indicator DP Dew point temperature TA Air temperature WBT Wet bulb temperature %RH Relative humidity C or F Celsius/Fahrenheit CAL Calibration Mode REC Manual/automatic data logging RECALL View manually logged data

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