: The "X" in the certificate number often indicates specific conditions for safe use, such as limitations on ambient temperature or mounting requirements.
In the context of industrial engineering and hazardous environments, is an EC-Type Examination Certificate issued by the Physikalisch-Technische Bundesanstalt (PTB). This certification is critical for equipment used in "potentially explosive atmospheres." : The "X" in the certificate number often
: It is frequently cited in manuals for precision instruments like the ABB PositionMaster EDP300 Digital Positioner and various rotameters. Safety Specifications : : The "X" in the certificate number often