The EX-TEC HS 680 is ideal for detecting leaks in underground natural gas pipelines. Its multi-array sensor system includes infrared technology for accurately locating leaks along the pipeline. This system helps prevent unnecessary and costly excavations. The optional integrated ethane-C2H6 detector makes it easy to verify whether the underground gas is natural gas from the pipeline or simply biogas, such as marsh or swamp gas. Precise leak pinpointing is achieved with the optional oxygen-O2 sensor. This O2 sensor measures the lowest O2 level while also detecting the highest methane-CH4 level. The combination of the smaller diffusion area for O2 and the maximum methane reading allows for easy identification of even complex leaks.