"The most powerful handheld BIOGAS ANALYZER.Ideally suited for solid waste disposal, Digesters plus Waste to Energy Engine TuningSimple operation,Compact & Rugged,Easy Data Handling,Low ownership cost.For solid waste disposal and anaerobic digesters, the OPTIMA 7 measures methane, carbon dioxide, hydrogen sulfide, oxygen, plus pressure, flow and temperature. It can also be outfitted for the tuning of WTE engines, whether on biogas or natural gas to measure carbon monoxide and NOx.Fast and easy to use intuitive menus and function buttonsLarge, color back-lit display with ZOOM feature for