SD-G-500S portable multi-function pumping gas analyzer is a high-end multi-function gas analyzer, which can be continuously used for more than 60 hours after one charge. It has a built-in pump and adopts imported high-sensitivity sensors for accurate and stable measurement. The instrument is equipped with a high-capacity internal storage function, which can print test data on-site, and is easy to use. It is widely used in emergency detection, medical, metallurgy, fire protection, petrochemical, municipal, paint, paint, chemical and other fields. The instrument can be used to detect a single gas or multiple gases. The combined instrument can simultaneously detect two, three, four, and five different gases. The temperature and humidity parameters can be detected simultaneously.