The quality of the biogas is subject to fluctuations that depend on the quality of the substrates and the management of the plant. The efficiency of the gas engine is influenced by the quality of the gas. With a gas analyzer from ADOS, the quality can be safely monitored and damage to the engine can be averted. The measuring instruments are available for the parameter’s methane, carbon dioxide, hydrogen sulphide and oxygen. Thus, the biogas plant can be completely monitored. Malfunctions can be detected and rectified in good time. The operation of the gas engines can be optimally managed. With more than one hundred years of experience, the name ADOS stands for best measurement quality. ADOS gas warning systems protect people and equipment from damage, for example in the powerhouse. Service and maintenance in Thailand are carried out by ThaiGer.