Extech CO250: Portable Indoor Air Quality CO2 Meter

Checks for Carbon Dioxide ( CO2) concentrations Calculates statistical weighted averages of TWA ( 8 hour time weighted average) and STEL ( 15 minute short term exposure limit) Maintenance free NDIR ( non-dispersive infrared) CO2 sensor Measurement ranges: CO2: 0 to 5, 000ppm Temperature: -14 to 140° F ( -10 to 60° C) Humidity: 0.0 to 99.9% User programmable audible alarm Backlit triple LCD display Built-in RS-232 interface for capturing readings on PC Data acquisition software and cable included to record and document CO2, Humidity and Temperature data Optional 33% and 75% RH calibration bottles Complete with software and cable, 4 AA batteries, and carrying case Features: • Checks for Carbon Dioxide ( CO2) concentrations • Calculates statistical weighted averages of TWA ( 8 hour time weighted average) and STEL ( 15 minute short term exposure limit) • Maintenance free NDIR ( non-dispersive infrared) CO2 sensor • Measurement ranges: CO2: 0 to 5, 000ppm Temperature: 14 to 140° F ( -10 to 60° C) Humidity: 0.0 to 99.9% • User programmable audible alarm • Backlit triple LCD display • Built-in RS-232 interface for capturing readings on PC • Data acquisition software and cable included to record and document CO2, Humidity and Temperature data • Optional 33% and 75% RH calibration bottles ( RH300-CAL) • Complete with software and cable, 4 AA batteries, and carrying case Applications: • Check air quality in schools, office buildings, greenhouses, hospitals and anywhere that high levels of carbon dioxide are generated Specifications Range Resolution Carbon Dioxide ( CO2) 0 to 5, 000ppm 1ppm Temperature 14 to 140° F ( -10 to 60° C) 0.1° F/ ° C Humidity 0.0 to 99.9% 0.1% Wet Bulb and Dew Point Calculated Dimensions 7.9x2.7x2.3” ( 200x70x57mm) Weight 6.7 oz. ( 190g)