GNL-B1F portable oxygen analyzer constant GNL-B1F-type oxygen analyzer portable oxygen analyzer is used to measure positive pressure in the clean, dry, non-corrosive gases and the oxygen concentration, wide range suitable for air separation, oil chemical, metallurgical, power electronics, machinery manufacturing and other industries in a variety of oxygen gas detection and analysis. Product Features: ◆ the world's advanced new long-life electrochemical detector, high sensitivity, fast response ◆ suitable for constant oxygen and hydrogen gas were in constant reduction of oxygen measurement ◆ friendly and convenient man-machine dialogue menus, easy and intuitive ◆ automatic temperature compensation, eliminating the impact of environmental temperature ◆ DC power supply, the use of flexible, fully charge the battery once about 20 hours of continuous use ◆ Built-in air pump (optional), explosion-proof (optional) ◆ With automatic storage function data