The HEYER 25 gram plug in and measure probe raises the bar for multigas analysis standards. This infrared IRMA mainstream analyzer can be used to measure CO2 and N2O emissions, and measure the emissions of a number of different anesthetic agents as well. The probe contains all the necessary components for advanced signal processing. It features an RS232 interface, thereby enabling quick connectivity to other systems. his probe requires no calibration, since calibration is done act the factory. Neither is there any requirement for assembly, and the analyzer is virtually maintenance free. Complex and sometimes costly calibration procedures as well as the need for periodic maintenance are therefore avoided. There is much that can be said about a gas monitoring system that can be held in the palm of your hand.