The CM-1652 Carbon Dioxide and Oxygen Welding Gas Analyzer provides customers with advanced analysis of active welding gas blends that contain 0-50% carbon dioxide and 0-25% oxygen. This device verifies the most common gas mixtures in the industry and will set the main targets that meet AWS verification. Features Easy to Use, On-the-Go Dual CO2 + O2 Analysis User configurable selection for individual concentration range The only device that meets AWS requirements to ensure your gas is in spec Gain UNLIMITED data logging to a Micro SD Card for quality assurance Models CM-1650 - Carbon Dioxide Welding Gas Analyzer CM-1652 - Oxygen and Carbon Dioxide Welding Gas Analyzer Warranty 1-year warranty - see CO2Meter Terms & Conditions Specifications CO2 Measurement Range: 0-50% O2 Measurement Range: 0-25% Measurement Targets: C2, C5, C10, C15, C20, C25, C30, C35, C40, C45, C50, O2 Accuracy: @100% Range: ±300 ppm +/- 5% of reading @ STP Sample Method: Flow through Operating Temperature: 0°C-50°C (32°F-122F°) to 95% RH, non-condensing CO2 Accuracy: @ 100% Range ±300 ppm +/-5% of reading @ STP O2 Accuracy: Better than 2% at full scale Battery: (QTY-3) Li-ion rechargeable batteries, 30+ hours per charge Resolution: 0.1% Dimensions: W 8.25”H 1.5” D Weight: .67 lbs. (+305g) Sensor Life Expectancy: CO2: >15 years and O2: 5 years Documents Data Sheet (pdf) Manual (pdf)