Portable Type Gas Analyzer has automatic operation, self diagnostic check and continuous stable alphanumeric display. The Analyzer has long life rechargeable batteries and has data logging and 232 output capability. The Analyzer has high impact plastic made case and has external dimension of 160 X 95 X 30 mm. The Analyzer has weight of 390 gm and is designed with battery charger, operation manual. The Analyzer has the feature that on start up, the instrument goes through complete self integrity and it digitally displays the result instantly. The Portable Type Gas Analyzer has working temperature ranging from -5 ° c to 55 ° c, storage temperature ranging from -20 ° c to 45 ° c.