The EX-TEC PM4 is a measuring device for gas detection in the ppm range, gas warning in the LEL range and gas concentration measurement in the vol.% range. Simple operator guidance using selections from DVGW applications (German Technical and Scientific Association for Gas and Water) Large, illuminated LCD display Self-test on start-up Easy operation using three keys Visual and audible alarms Adjustable alarm thresholds for each gas and measuring range Temperature compensated sensors Function menu for individual device configuration (PIN code protected) Gas database with calibration for methane and other gases, e.g. propane, butane, hexane, nonane, hydrogen, kerosene Adjustable test gas concentration Passive explosion protection: EC type-examination certificate in accordance with ATEX 100a, guideline 94/9/EG Certificate no.: TÜV 09 ATEX 555077 X Identification: II2G Ex d e ib IIb T4 Active explosion protection: Function safety test in the "Warning" mode for methane (CH4), propane (C3H8) and nonane (C9H20)