Table of Contents
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User's Guide
CO
Meter
2
Model CO250
Introduction
Congratulations on your purchase of this Model CO250 Meter. This meter measures
CO
(Carbon Dioxide) levels, air temp., dew point, wet bulb temperature and humidity
2
and is an ideal instrument for indoor air quality (IAQ) diagnosis. This meter is shipped
fully tested and calibrated and, with proper use, will provide years of reliable service.
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Table of Contents
Related Manuals for Extech Instruments CO250
Summary of Contents for Extech Instruments CO250
- Page 1 Model CO250 Introduction Congratulations on your purchase of this Model CO250 Meter. This meter measures (Carbon Dioxide) levels, air temp., dew point, wet bulb temperature and humidity and is an ideal instrument for indoor air quality (IAQ) diagnosis. This meter is shipped...
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Page 2: Meter Description
Freezes the current reading on display. Cancels data hold function. Activates or cancels the backlight. Selects unit or increases value in setup. Selects AIR, DP, WBT temps display. Selects unit or decreases value in setup. Activates MIN,MAX,STEL,TWA function. Saves and finishes settings. CO250-EU V1.2 6/09... -
Page 3: Operation
NOTE: Do not hold the meter close to your mouth or any other source of CO AIR, DP and WBT Measurements Press the DP/WBT button to switch temperatures display. The lower left display will cycle from “AIR” air temperature, “DP” dew point temperature and “ Sn” wnt bul temperature CO250-EU V1.2 6/09 button to... -
Page 4: Min,Max,Stel,Twa
As well, the TWA mode will display a weighted average of readings prior to 8 hours of operation. The CO250 takes at least 5 minutes to calculate STEL and TWA. The display shows “----” during the first 5 minutes from power on. - Page 5 (°C or °F) will be blinking in the display. To switch units, press the MODE/▲ button. Press the M /AV button to save the setting or press the CAL/Esc button exit without saving and return to P3. CO250-EU V1.2 6/09...
- Page 6 For more information or specific operating instructions, refer to the User Guide included with the software. CO250-EU V1.2 6/09...
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Page 7: Specifications
-20 to 60 C ( -4 to 140 F); <99% RH non-condensing Power Supply 4 x 1.5V ‘AA’ batteries or AC adaptor (9V/1A) Battery Life approx. 24 hours (alkaline batteries) Dimensions / Weight 200x70x57mm (7.9x2.7x2.3”)/190g (6.7 oz.) CO250-EU V1.2 6/09... -
Page 8: Maintenance
E04: The original data error results in this error (DP, WB) E07: Too low voltage to measure CO , replace batteries or use an adaptor. E11: Retry humidity calibration. E17: Retry CO calibration. E31: Temperature sensor damaged. E34: Humidity sensor damaged. CO250-EU V1.2 6/09... - Page 9 Germany, Japan, Australia, UK...: 5000ppm, 8 hours weighted average in occupational exposure limit is 5000ppm. more info for Extech CO250 Phone: 01235 838 555 E-mail: cs@airconcern.co.uk web: www.airconcern.co.uk HT30-EU-EN-V3.2--9/11 Air Concern Ltd, Building 173 Curie Avenue Harwell Didcot, Oxfordshire OX11 0QG CO250-EU V1.2 6/09...
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