EXTECH CO250

Extech CO250 Portable Indoor Air Quality CO2 Meter Measures Carbon Dioxide ( CO2) , Temperature, Humidity, Dew Point, and Wet Bulb 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 Complete with software and cable, 4 AA batteries, and carrying case Applications : Check air quality in schools, office buildings, greehouses, hospitals and anywhere that high levels of carbon dioxide are generated Specification : Specifications Range Resolution Carbon Dioxide( CO2) 0 to 5, 000ppm 1ppm Temperature 14 to 140° F( -10 to 60° C 0.1F° / ° C Humidity 0.0 to 99.9% 0.1% Wet Bulb and Dew Point Calculated Dimensions 7.9 x 2.7 x 2.3 " ( 200x70x57mm) Weight 6.7oz ( 190g)