0 About this manual
0.3 Abbreviations and symbols
36
EMT6
10/16 MN03407006Z-DE/EN
www.eaton.com
0.3 Abbreviations and symbols
The following acronyms and symbols are used throughout this manual:
▶
Indicates instructions to be followed.
0.3.1 Hazard warnings of material damages
0.3.2 Hazard warnings of personal injury
0.3.3 Tips
DEKRA EXAM
Accredited certification authority for devices operated in Ex e areas.
Ex e
Type of protection “Increased Safety”
FIT
Failure in Time - number of dangerous failures in 10
9
hours
HFT
Hardware-Fault-Tolerance
MTTF
d
Mean Time To Dangerous Failure
PL
Performance Level
PTC
Positive temperature coefficient thermistor
(temperature-sensitive resistor with a positive temperature coefficient)
SIL
Safety Integrity Level
TNF
Rated threshold temperature
NOTICE
Warns about the possibility of material damage.
CAUTION
Warns of the possibility of hazardous situations that may
possibly cause slight injury.
WARNING
Warns of the possibility of hazardous situations that could result
in serious injury or even death.
DANGER
Warns of hazardous situations that result in serious injury or
death.
→
Indicates useful tips.