Braun A5S1-n Series, Manual

Page: 4 / 36

A5S1-n-Manual_EN_Rev02 2021_JAN_19 Page 4 of 36
1.2 List of Abbreviations
Abbreviation Meaning
altern. alternative
API Technical standards of the "American Petroleum Institute"
A5S BRAUN GmbH Sensor series
ATEX stands for ATmosphère Explosibles (meaning the ATEX EU directives for explosion protection)
DIN German Institute for Standardisation (Deutsches Institut für Normung)
EMC Electromagnetic compatibility
EN European Norm
Ex nA Type of protection "non-sparking", approval for hazardous areas zone 2
F/R Forward/Reverse (Forward/Backward)
IEC International Electrotechnical Commission
incl. inclusive
IPxx Ingress Protection Number xx according to DIN EN 60529
ISO International Organization for Standardization
max. maximum
min. minimum
MTTFd Mean Time To Failure dangerous
n Short term for Speed
NEMAx National Electrical Manufacturers Association Number x
Nm Newton meter
PELV Protective Extra Low Voltage
PFDavg Probability of Failure on Demand average
RPM Revolutions Per Minute
sec second
SELV Safety Extra Low Voltage
SILx Safety Integrity Level x
TMR Triple Modular Redundant
Ub + supply voltage
UL Underwriter Laboratories
Vdc or
V dc Volt direct current