NUVAIR nitrogen analyzer is portable and easy to operate, extremely accurate and stable. This unit is preferred by automotive, food industry, military, and many other nitrogen users. Our high impact resistant case is designed for everyday use in the industrial environment. To change the batteries or sensor, simply unscrew the rear cover and you have easy access to these user changeable components. The nitrogen analyzer can handle high flow rates and offers 90% response in less than 10 seconds.