The Monotrace O2 datalogger is designed to measure O2 in a current loop. Depending on the O2 sensor used, measurements can be taken in ranges from 0 and 10,000 ppm. Easy to install and use, this control unit is delivered pre-configured for the required application. The "COM" option enables dialogue with a supervisor or a man/machine interface. Two integrated thresholds manage local slaving. An audible alarm draws the user's attention when a threshold is exceeded. Three programmable function keys simplify operation. The 5-digit display with minimum and maximum information memorizes peaks.