Máy đo khí CO2, nhiệt độ, độ ẩm, điểm sương trong nhà Extech CO250 (0 - 5,000ppm)

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