Accurate gas measurements are made easier with the Draeger CMS. This new generation spot check detection device is literally as easy as 1,2,3 to operate. Simply insert one of the over 50 chemical specific CMS chips and follow the instructions on the display as to when to move the slide switch. TWA levels are typically analyzed in 1 to 2 minutes. Upon completion of this process, the concentration is indicated on the LCD display. Every chip uses the exact same procedure so training is minimal. CMS does not require gas calibration. All measurements and calibration information is stored on a bar code on the CMS chip. An electronic leak check is performed before each measurement so that you are assured of accurate indications every time. Operating on 4 AA cells the CMS will deliver about 100 measurements per battery change. An optional remote sampling system makes the CMS an ideal chioce for confined space entry. The on board data recorder stores up to 50 measurements with the gas/concentration and date/time.