For pinpointing leakages in buried gas pipes by means of a borehole probe. The measured concentration of up to nine boreholes can be visualized and stored in the device. The option can only be configured in combination with a dual IR-sensor to measure CH4 and CO2 (282103) and the integrated pump (282100). Moreover, the O2 reading will be displayed if the sensor is configured as well (separate option). Measurement ranges: - CH4: 0-100 Vol.% - CO2: 0-5 Vol.% - O2: 0-25 Vol.% Resolution: - CH4: 0.1 Vol.% - CO2: 0.1 Vol.% - O2: 0.1 Vol.%