Newchrom Model PBA-04 is a Microprocessor controlled Biogas Analyzer is reliable,robust & easy to use with long sensor life, is use to measure the biogas sample in continous gas stream, cylinders, etc.. PBA-04 consist of Membrane keyboard and 4X20 LCD display for time monitoring of gas sample. It cosist of inbuilt O2, CH4, CO2, H2S sensor with sampling pump (optional).