TPI Combustion Efficiency Analyzer Breadcrumb Home / Products / Parts / Tools and Instruments / Testing Instruments / Combustion Efficiency Analyzers Loading... Customer Part Number: 708 Brand: TPI CO2 Range: 0 - 10,000 PPM O2 Range: 0 - 25% Temp. Range (°F): -40 - 1472 Weight (Lb.): 1.1